Katalog Czasopism

• Curves of thermodynamic states in some fluids with dispersion

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2017

  variations in the thermodynamic state of a dispersive medium, caused by sound, are studied. A bubbly liquid and a Maxwell fluid are considered as examples. Curves in the plane of thermodynamic states are plotted. They are in fact pictorial images of linear relations of excess pressure and excess density in the acoustic wave which reflect irreversible attenuation of the sound energy. The curves account for the nonlinear generation...

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• Nonlinear phenomena of small-scale sound in a gas with exponential stratification

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2017

  The nonlinear dynamics of perturbations, quickly varying in space, with comparatively large characteristic wavenumbers k: k>1/H, is considered. H is the scale of density and pressure reduction in unperturbed gas, as the coordinate (H is the so-called height of the uniform equilibrium gas). Coupling nonlinear equations which govern the sound and the entropy mode in a weakly nonlinear flow are derived. They describe the dynamics...

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• Qualitative evaluation of distributed clinical systems supporting research teams working on large-scale data

  Publikacja

  • T. Dziubich

  - TASK Quarterly - Rok 2017

  Inthispaper,fivecontemporaryscalablesystemstosupportmedicalresearchteams are presented. Their functionalities extend from heterogeneous unstructured data acquisition through large-scale data storing, to on-the-fly analyzing by using robust methods. Such kinds of systems can be useful in the development of new medical procedures and recommendation rules for decision support systems. A short description of each of them is provided....

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• GENERAL DYNAMIC PROJECTING OF MAXWELL EQUATIONS

  Publikacja

  • P. Wojda
  • S. Leble

  - TASK Quarterly - Rok 2017

  A complete – system of Maxwell equations is splitting into independent subsystems by means of a special dynamic projecting technique. The technique relies upon a direct link between field components that determine correspondent subspaces. The explicit form of links and corresponding subspace evolution equations are obtained in conditions of certain symmetry, it is illustrated by examples of spherical and quasi-one-dimensional waves.

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• CENTRAL-FORCE DECOMPOSITION OF THE TERSOFF POTENTIAL

  Publikacja

  • T. H. Tran
  • S. Winczewski

  - TASK Quarterly - Rok 2017

  Central forces play important role in the analysis of results obtained with particle simulation methods, since they allow evaluating stress fields. In this work we derive expressions for a central-force decompositon of the Tersoff potential, which is often used to describe interatomic interactions in covalently bonded materials. We simplify the obtained expressions and discuss their properties.

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• A SHORT REVIEW OF BLOOD FLOW MODELLING METHODS: FROM MACRO- TO MICROSCALES

  Publikacja

  • K. Kaczorowska-Ditrich
  • K. Tesch

  - TASK Quarterly - Rok 2017

  The aim of this paper it to review various scale approaches to the blood flow modelling. Blood motion may be described by three types of mathematical models according to the observed scales or resolutions, namely microscopic, mesoscopic and macroscopic descriptions. The above approaches are discussed together with their advantages and disadvantages. Several results of mesoscopic simulations are presented with particular attention...

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• Multidisciplinary Open System Transferring Knowledge for R2B Development

  Publikacja

  • H. Krawczyk
  • P. Lubomski

  - TASK Quarterly - Rok 2017

  Despite many efforts, there is still a serious problem in transferring knowledge from research to business. The problem is especially visible in Poland – the cooperation of R2B is ineffective. We are trying to solve this problem using some IT support. The manuscript presents some solutions developed at the Gdańsk University of Technology. In particular, the platform called “MOST Knowledge” is deeply described. Its layer architecture,...

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• Open extensive IoT research and measurement infrastructure for remote collection and automatic analysis of environmental data.

  Publikacja

  • Ł. Wiszniewski
  • D. Klimowicz

  - TASK Quarterly - Rok 2017

  Internet of Things devices that send small amounts of data do not need high bit rates as it is the range that is more crucial for them. The use of popular, unlicensed 2.4 GHz and 5 GHz bands is fairly legally enforced (transmission power above power limits cannot be increased). In addition, waves of this length are very diffiult to propagate under field conditions (e.g. in urban areas). The market response to these needs are the...

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• INFORMATION SOCIETY DEVELOPMENT TRENDS, FROM DATA THROUGH KNOWLEDGE TO WISDOM

  Publikacja

  • H. Krawczyk
  • A. Targowski

  - TASK Quarterly - Rok 2017

  The paper investigates both the causes and effects of the rapid increase in the data volume(BigData)andtheirimpactonhumancognition.TheroleoftheInternetindistributing and exchanging of such data, and their impact on the growth of the Information Society are emphasized. As a result, Wisdom Science – a new kind of research – emerges which has the potential to facilitate more advanced solutions in the digital world. In consequence,...

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• JMATRIX - a package for relativistic J-matrix calculations in elastic scattering of electrons from model potentials

  Publikacja

  • P. Syty
  • J. E. Sienkiewicz

  - TASK Quarterly - Rok 2017

  We present a software package JMATRIX, consisting of two computer codes written in FORTRAN 95 and parallelized with OpenMP, implementing the so-called J-matrix method, applied to elastic scattering of electrons on the radial potential, vanishing faster than Coulomb one. In the J-matrix method, physical scattering problem is replaced by using well-defined model, which is solved analytically. Presented software implements both non-relativistic...

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• Complementary oriented allocation algorithm for cloud computing

  Publikacja

  • P. Orzechowski

  - TASK Quarterly - Rok 2017

  Nowadays cloud computing is one of the most popular processing models. More and more different kinds of workloads have been migrated to clouds. This trend obliges the community to design algorithms which could optimize the usage of cloud resources and be more effiient and effective. The paper proposes a new model of workload allocation which bases on the complementarity relation and analyzes it. An example of a case of use is shown...

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• The Bridge to Knowledge – Open Access to Scientific Research Results on Multidisciplinary Open System Transferring Knowledge Platform

  Publikacja

  • A. Wałek
  • P. Lubomski

  - TASK Quarterly - Rok 2017

  The European policy of Open Access to scientific research is now one of the key issues discussed in public debates on the future development of scientific communication. The implementation of Open Access tools has significant impact on scientific and economic growth. On the one hand, Open Access accelerates disseminating new research findings and facilitates recognition of authors on a more global scale. On the other hand, Open...

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• COMPARATIVE STUDY OF TRADITIONAL AND VIRTUAL TEAMS

  Publikacja

  • B. Krawczyk-Bryłka

  - TASK Quarterly - Rok 2017

  The paper presents two kinds of cooperating teams: traditional and virtual, and proposes a new measure of the team virtuality level. Some representative teamwork characteristics, such as team member competencies, team diversity, leadership, and team decision-making are analyzed and compared depending on the degree of virtuality. Moreover, the team climate as one of the team performance measures is also analyzed and compared in...

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• DATABASE AND BIGDATA PROCESSING SYSTEM FOR ANALYSIS OF AIS MESSAGES IN THE NETBALTIC RESEARCH PROJECT

  Publikacja

  • M. Lewczuk
  • P. Cichocki
  • J. Woźniak

  - TASK Quarterly - Rok 2017

  A specialized database and a software tool for graphical and numerical presentation of maritime measurement results has been designed and implemented as part of the research conducted under the netBaltic project (Internet over the Baltic Sea – the implementation of a multi-system, self-organizing broadband communications network over the sea for enhancing navigation safety through the development of e-navigation services.) The...

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• Processing of Satellite Data in the Cloud

  Publikacja

  • J. Proficz
  • K. Drypczewski

  - TASK Quarterly - Rok 2017

  The dynamic development of digital technologies, especially those dedicated to devices generating large data streams, such as all kinds of measurement equipment (temperature and humidity sensors, cameras, radio-telescopes and satellites – Internet of Things) enables more in-depth analysis of the surrounding reality, including better understanding of various natural phenomenon, starting from atomic level reactions, through macroscopic...

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• Calculation methods of interaction of electromagnetic waves with objects of complex geometries

  Publikacja

  • M. Shopa

  - TASK Quarterly - Rok 2016

  Modeling of the electromagnetic interaction with different homogeneous or inhomo-geneous objects is a fundamental and important problem. It is relatively easy to solve Maxwellequations analytically when the scattering object is spherical or cylindrical, for example. How-ever, when it loses these properties all that is left for us is to useapproximation models, to ac-quire the solution we need. Modeling of complex, non-spherical,...

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• Fractional Problems with Right-Handed Riemann-Liouville Fractional Derivatives

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, we investigate the existence of solutions for advanced fractional differential equations containing the right-handed Riemann-Liouville fractional derivative both with nonlinear boundary conditions and also with initial conditions given at the end point T of interval [0,T ]. We use both the method of successive approximations, the Banach fixed point theorem and the monotone iterative technique, as well. Linear problems...

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• Multiple Solutions to Third-Order Differential Equations with Derivative Dependence and Deviating Arguments

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, we give some new results for multiplicity of positive (nonnegative) solutions for third-order differential equations with derivative dependence, deviating arguments and Stieltjes integral boundary conditions. We discuss our problem with advanced argument α and arbitrary β ∈ C([0,1],[0,1]), see problem (2). It means that argument β can change the character on [0,1], so β can be delayed in some set J ⊂ [0,1] and advanced...

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• NON-STATIONARY THERMAL SELF-ACTION OF ACOUSTIC BEAMS CONTAINING SHOCK FRONTS IN THERMOCONDUCTING FLUID

  Publikacja

  • A. Perelomova

  - TASK Quarterly - Rok 2016

  Non-stationary thermal self-action of a periodic or impulse acoustic beam containing shock fronts in a thermoconducting Newtonian fluid is studied. Self-focusing of a saw-tooth periodic and impulse sound is considered, as well as that of a solitary shock wave which propagates with the linear sound speed. The governing equations of the beam radius are derived. Numerical simulations reveal that the thermal conductivity weakens the...

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• Successive Iterative Method for Higher-Order Fractional Differential Equations Involving Stieltjes Integral Boundary Conditions

  Publikacja

  • T. Jankowski

  - TASK Quarterly - Rok 2016

  In this paper, the existence of positive solutions to fractional differential equations with delayed arguments and Stieltjes integral boundary conditions is discussed. The convergence of successive iterative method of solving such problems is investigated. This allows us to improve some recent works. Some numerical examples illustrate the results.

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• A high-accuracy method of computation of x-ray waves propagation through an optical system consisting of many lenses

  Publikacja

  • S. Kshevetskii
  • P. Wojda

  - TASK Quarterly - Rok 2016

  The propagation of X-ray waves through an optical system consisting of many X-ray refractive lenses is considered. Two differential equations are contemplated for solving the problem for electromagnetic wave propagation: first – an equation for the electric field, second – an equation derived for a complex phase of an electric field. Both equations are solved by the use of a finite-difference method. The simulation error is estimated...

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• Suitability of LoRaWAN Technology for the Development of Maritime Applications

  Publikacja

  • Ł. Wiszniewski

  - TASK Quarterly - Rok 2018

  The LoRaWAN Technology opens new possibilities for gathering and analysis of distributed data. In the paper we concentrate on its maritime usability which was tested by us in the period from June to August 2018. Measurements of the LoRaWAN network coverage in the Bay of Gdansk area were carried out. Various conditions and places were tested. The research was planned in such a way as to gradually increase the range and control the...

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• Mashup Approaches for Improving Service Oriented Business Scenarios

  Publikacja

  • H. Krawczyk
  • N. Parsamyan

  - TASK Quarterly - Rok 2018

  Two kinds of business scenarios are considered: application- and service-oriented. It is shown that the former are more flexible and easier reconfigurable for both traditional (human-oriented) and IT services. Moreover, complex IT services can be created by simple IT services using the modern mashup technology. It is the reason why such business scenarios can be modeled by BPMN in much easier ways. A simple example of a supply...

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• C2 NIWA Community-Segmentation Criteria and Building Brand Associations on the Example of a Selected Target Group

  Publikacja

  • A. Popławska (dawniej: A. Popławska-Boruc)

  - TASK Quarterly - Rok 2015

  Every organization which offers products or services wishes to communicate with their customers in the most effective way. This kind of communication is based on proper selection of target groups, which are extracted in the process of market segmentation. That is way it is very important to ask the question to whom the message is to be directed and what kind of message we want to give. This article describes the selection criteria...

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• Balance errors in numerical solutions of shallow water equations

  Publikacja

  • D. Gąsiorowski

  - TASK Quarterly - Rok 2007

  The analysis of the conservative properties of the shallow water equations is presented in the paper. The work focuses on the consistency of numerical solution of these equations with the conservation laws of mass and momentum. The investigations involve two different conservative forms which are solved by an implicit box scheme. The theoretical analysis supported by numerical experiments is carried out for rectangular channel...

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• KOLMOGOROV EQUATION SOLUTION: MULTIPLE SCATTERING EXPANSION AND PHOTON STATISTICS EVOLUTION MODELING

  Publikacja

  • M. Guirao Galcera
  • S. Leble

  - TASK Quarterly - Rok 2014

  We consider a formulation of the Cauchy problem for the Kolmogorov equation which corresponds to a localized source of particles to be scattered by a medium with a given scattering amplitude density. The multiple scattering amplitudes are introduced and the corresponding series solution of the equation is constructed. We investigate the integral representation for the first series terms, its estimations and values of the photon...

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• Novel Analytic-Numerical Model of Free Convection: with Leading Edge Considered

  Publikacja

  • S. Leble
  • W. Lewandowski

  - TASK Quarterly - Rok 2014

  A novel solution of the free convection boundary problem is represented in analytical form for velocity and temperature for an isothermal vertical plate, as an example. These fields are built as a Taylor Series in the x coordinate with coefficients as functions of the vertical coordinate (y). We restrict ourselves by cubic approximation for both functions. The basic Navier-Stokes and Fourier-Kirchhoff equations and boundary conditions...

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• On Invariants of Fluid Mechanics Tensors

  Publikacja

  • K. Tesch

  - TASK Quarterly - Rok 2013

  This paper presents physical interpretations of the first and second invariants of tensors of fluid mechanics. Some examples of elementary applications and meanings are also given.

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• Study of Icosahedral Clusters in Close-packed Simple Liquids

  Publikacja

  • A. Kozub

  - TASK Quarterly - Rok 2012

  The local structure of liquid copper was determined using Steinhardt order parameters, with particular attention paid to icosahedral clusters. The positions of atoms were obtained from three sets of molecular dynamics simulations, with the forces obtained from: the Sutton-Chen (SC) potential, the Naval Research Laboratory total energy tight-binding (NRL-TB) method and the divide-and-conquer learn-on-the-fly (DCLOTF) method, respectively....

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• Implementation of the Boundary Element Method to Two-Dimensional Heat Transfer with Thermal Bridge Effects

  Publikacja

  • M. Lewandowski

  - TASK Quarterly - Rok 2013

  The work presents an application of the boundary element method applied to a two-dimensional conductive heat transfer. The algorithm of the method is explained and its advantages are outlined. Green's function as a fundamental solution for Poisson's equation in two dimensions was used and the direct approach was applied. The presented results concern building construction elements as typical cases of thermal bridges. Some properties...

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• NUMERICAL SIMULATIONS OF GAP FLOW ABOVE ROTATING DISK

  Publikacja

  • F. Wasilczuk
  • P. Flaszyński
  • P. Doerffer

  - TASK Quarterly - Rok 2015

  A rotating disk can be considered a basic configuration for the investigati ons of the impact of various conditions on the flow through the clearance between the s hrouded turbine blade and the casing. Numerical calculations using Fine/Turbo Numeca were conducted to examine the influence of the rotational velocity and the pressure differ ence across the disk on the flow conditions, especially the mass flow through the clearance....

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• Acceptance Testing of Software Products for Cloud-Based On-Line Delivery

  Publikacja

  • B. Wiszniewski

  - TASK Quarterly - Rok 2015

  Software products intended for on-line delivery by distributors serving an open community of subscribers are developed in a specific life-cycle model, in which roles of the major stakeholders are strongly separated, unlike in any other software development model known in software engineering. Its specificity underlines the fact that a distributor of the final product, responsible for its acceptance for publication and delivery...

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• KOALA Graph Theory Internet Service

  Publikacja

  • K. Giaro
  • K. Ocetkiewicz
  • T. Goluch

  - TASK Quarterly - Rok 2015

  KOALA has been created with the idea of C++ library templates, implementing a broad set of procedures in the fields of algorithmic graph theory and network problems in discreate optimization. During the C2NIWA project, a library has been greatly ectended, the code refactored and enclosed with the internet service available in the public repository of thr project. Today it contains interconnected educational materials in the form...

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• KASKADA Platform in Cloud Environment

  Publikacja

  • H. Krawczyk
  • J. Proficz
  • B. Daca

  - TASK Quarterly - Rok 2015

  KASKADA is a computing platform for developing and running services and applications oriented to multimedia processing and data streaming. A solution for serving the platform in the PaaS model is presented. The paper briefly describes the software for creating the private cloud environment based on the OpenStack software. The coud has been deployed to a supercomputer working in C2 NIWA at the Gdansk University of technology. This...

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• WIKI-WS as a C2 NIWA Web Service Management Platform

  Publikacja

  • M. Downar

  - TASK Quarterly - Rok 2015

  The Wiki-WS platform was implemented within the C2 NIWA project for production purposes. Wiki-WS stands for developing, managing and maintaining web services. The production deployment needed implementation of several functional improvements and establishing a strong security 7 safety policy. The WikiWS platform has to be used as an educational environmement for developing web sevices and production environment for execution of...

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• Retrieval of Heterogeneus Sevices in C2NIWA Repository

  Publikacja

  • J. Szymański

  - TASK Quarterly - Rok 2015

  The paper reviews the methods used for retrieval of information and services. The selected approaches presented in the review inspired us to build retrieval mechanisms in a system for searching the resources stored in the C2NIWA repository. We describe the architecture of the system, its functions and the surrounding subsystems to which it is related. For retrieval of C2NIWA sevices we propos three approaches based on: keyword...

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• Service Recommendation on WIKI-WS Platform

  Publikacja

  • A. Sobecki

  - TASK Quarterly - Rok 2015

  The article presents the issues of recaommendation services for users. The commonly used solutions include known classes of recommendation systems and information about their area of use and the most frequently used algorithms. the issue of choosing the services has been described based on the Wiki-WS platform including a model of cooperation with the recommendation system. The conclusion from the analysis of the proposed model...

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• Business Process Modelling and Enterprise Improvement Analysis

  Publikacja

  • K. Dziubich

  - TASK Quarterly - Rok 2015

  The main trends in developing an approach and tools for business process modelling are discussed. Business Process Management (BPM) and BPM Notation (BPMN) are presented. Moreover, the possibilities of C2NIWA in a wide range of these tools running on a supercomputer are suggested. Firstly, the company development strategy can be planned . Secondly, quick and flexible changes of its processes can be modelled, analysed and implemented....

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• IT PROJECT TEAMS CREATION AND ANALYSIS IN C2 NIWA ENVIRONMENT

  Publikacja

  • B. Krawczyk-Bryłka

  - TASK Quarterly - Rok 2015

  Teams are the basic unit of the C2NIWA community, which – using the technical capabilities of this environment – focuses on the implementation of various projects. This article presents one of the competitions carried out within the framework of a C2NIWA project called Uwaga! Upadek! [Attention! Fall!], used as an example of a collaborative project for which analyses related to the assessment of teamwork based on the input-process-result...

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• C2 Niwa - The Centre of Competence for Novel Infrastructure of Workable Applications

  Publikacja

  • H. Krawczyk

  - TASK Quarterly - Rok 2015

  Scientific and cloud computing are discussed in the paper . The paradigm of EaaS (Everything as a Service) is presented and the design methodology of service oriented applications is proposed. Implementation of the SOSE (Software Oriented Software Engineering) approach is analyzed and the roles of developing teams to obtain software products satisfying business requirements are also shown. The above listed activities create a basic...

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• Adaption of Open Science Paradigm at Gdańsk University of Technology

  Publikacja

  • T. M. Boiński

  - TASK Quarterly - Rok 2015

  Open Access plays growing role in sharing results of today's research. The movement is very strong and many Universities, including Gdańsk University of Technology, are adapting this approach. This paper presents general information about Open Access movement and the approach adapted by the Gdańsk University of Technology. The components of Open Science platform as well as the procedures are described.

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• Modern Methods of Software Development

  Publikacja

  • D. Zima

  - TASK Quarterly - Rok 2015

  Software development methods consist of such activities like analysis, planning, development, testing, deployment, maintenance and retirement. All of them can be divided into two main categories - traditional and agile. The objective of this paper is to review some of the most popular traditional, agile and open source development methods. Special attention was paid to the common stages of all methods - testing and maintenance.

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• Real-Time connection Between Immerse 3D Vizualization Laboratory and Kaskada Platform

  Publikacja

  • Ł. Wiszniewski
  • T. Ziółkowski

  - TASK Quarterly - Rok 2015

  Multimedia stream processing into two cooperative different systems (cluster platform and virtual lab) is considered. The considered selected information about the systems is presented and the idea of its communication when executing the distributed application is proposed. A general schema of the communication architecture is given. Tests of data transmission quality are considered and their results are presented.

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• BeesyCluster as Front-End for High Performance Computing Services

  Publikacja

  • P. Czarnul

  - TASK Quarterly - Rok 2015

  The paper presents the BeesyCluster system as a middleware allowing invocation of services on high performance computing resources within the NIWA Centre of Competence project. Access is possible through both WWW and SOAP Web Service interfaces. The former allows non-experienced users to invoke both simple and complex services exposed through easyto-use servlets. The latter is meant for integration of external applications with...

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• Numerical investigation of flooding of real-topography developed areas following river embankment failure

  Publikacja

  • M. Szydłowski
  • B. Twaróg

  - TASK Quarterly - Rok 2006

  Przedstawiono numeryczne symulacje hydrodynamiki przepływu powodziowego na terenie zabudowanym po przerwaniu wału przeciwpowodziowego. Zaprezentowano porównanie obliczeń z wynikami własnych pomiarów laboratoryjnych przeprowadzonych w Laboratorium Hydrauliki Inżynierii Środowiska Politechniki Gdańskiej.Zaproponowano wykorzystanie modelu przepływu do oceny zagrożenia powodziowego obszarów zabudowanych zlokalizowanych na terenach...

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• Implementation of continuum damage in elasto-viscoplastic constitutive equations

  Publikacja

  • A. Ambroziak
  • P. Kłosowski
  • M. Nowicki
  • R. Schmidt

  - TASK Quarterly - Rok 2006

  W pracy opisano podstawowy wariant modelu Chaboche, oraz założenia i implementacje kontynualnego modelu zniszczenia do komercyjnego programu MES. W pracy zaprazentowano dwa podejścia zobrazowane na przykładach obliczeń numerycznych.

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• Length distribution of fuzzy-end segments

  Publikacja

  • S. Frigio
  • G. Cosimi
  • G. Bergmański
  • E. Urbańska-Galewska
  • J. Rybicki

  - TASK Quarterly - Rok 2006

  Obliczono analitycznie rozkłady gęstości prawdopodobieństwa dla długości odcinków o rozmytych końcach, tzn. takich, których końce mogą przyjmować losowe położenia, zgodnie z zadanym rozkładem prawdopodobieństwa. Rozważono przypadki jedno-, dwu- i trójwymiarowych obszarów, w których mogą znajdować się końce odcinków. Podano przykłady potencjalnych zastosowań uzyskanych wyników.

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• Conditional simulation of spatiotemporal random fields of environmental contamination

  Publikacja

  • R. Jankowski
  • H. Walukiewicz

  - TASK Quarterly - Rok 2006

  Artykuł przedstawia metodę warunkowego modelowania przestrzenno-czasowych pól losowych w zagadnieniach środowiska naturalnego. Metoda ta może być wykorzystana do prognozy zanieczyszczenia w wybranych punktach w danym czasie na podstawie pomiarów wykonanych w innych miejscach i/lub w innym czasie. Analizę przeprowadzono na przykładzie zanieczyszczenia gruntu metalami ciężkimi.

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• FE analysis of strain localization in concrete in elasto-plasticity and damage mechanics with non-local softening

  Publikacja

  • J. Bobiński

  - TASK Quarterly - Rok 2006

  W artykule przedstawiono wyniki symulacji numerycznych zjawiska lokalizacji odkształceń w betonie wykonanaych przy zastosowaniu metody elementów skończonych (MES). Do opisu betonu wykorzystano dwa prawa materiałowe zdefiniowane w ramach teorii plastyczności (kryterium Druckera-Pragera w ściskaniu i warunek Rankine'a w rozciąganiu) oraz mechaniki uszkodzeń w sformułowaniu odkształceniowym. Dla poprawnego opisu lokalizacji (regularyzacji...

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• Application of the Murnaghan model in analysis of non-linear elastic material properties of pvc-coated fabric

  Publikacja

  • A. Ambroziak

  - TASK Quarterly - Rok 2006

  W pracy omówiono proces identyfikacji parametrów materiałowych dla wybranej tkaniny technicznej typu Panama. Zaproponowano metodę identyfikacji nieliniowo sprężystych właściwości tkaniny Panama dla modelu Murnaghan'a. Określono zakres stosowalności nieliniowo sprężystych parametrów, w oparciu o doraźną wytrzymałości tkaniny na rozciąganie, która poddana redukcji określa tzw. wytrzymałość długoterminową. Opisano doświadczenia niezbędne...

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