Search results for: BAR/DIAPHRAGM BRACING,TRAPEZOIDAL CLADDING,IMPERFECTION FORCE,STEEL STRUCTURES,TRUSS GIRDER

• EXPERIMENTAL AND NUMERICAL STUDY ON COLLISIONS BETWEEN STEEL STRUCTURES UNDER EARTHQUAKE EXCITATION

  Publication

  • B. Sołtysik
  • R. Jankowski

  - Year 2014

  In the time of high urbanization, the need to build closely-spaced structures forces the designers to take into account earthquake-induced collisions between adjacent buildings and their effects on the response of structures. Past and recent investigations confirmed that interactions between adjacent buildings during earthquakes may cause serious damages to the structural elements and may even lead to total collapse of the structure....

• Preliminary experimental research on stability of truss' joint with positive eccentricity

  Publication

  • M. Gordziej-Zagórowska
  • E. Urbańska-Galewska
  • Ł. Pyrzowski
  • P. Deniziak
  • A. Łukowicz

  - Year 2016

  Recently, a very large interest in lightweight steel structures made from cold-formed sections has been noticeable. In the design practice, a large emphasis is put on rational shaping of both the thin-walled elements and constructions designed on them. The aim of this paper is to present the methodology for preparation of experimental research that model the behaviour of members in trusses made of cold-formed sections with positive...

• PROBLEMS OF COLLISIONS BETWEEN ADJACENT STEEL STRUCTURES UNDER EARTHQUAKE EXCITATION

  Publication

  • B. Sołtysik
  • R. Jankowski

  - Civil and Environmental Engineering Reports - Year 2016

  Nowadays, the high level of urbanization forces the engineers to design closely-separated structures and to take into account many factors influencing their response, including collisions between them due to insufficient separation distance during moderate to strong ground motions. Recent observations as well as experimental and numerical investigations have confirmed that interactions...

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• PROBABILISTIC ANALYSIS OF A SPACE TRUSS BY MEANS OF A MULTIDIMENSIONAL VARIABLE DESCRIPTION

  Publication

  • P. Sorn
  • J. Górski
  • J. Przewłócki

  - Archives of Civil Engineering - Year 2015

  The objective of this paper is to present a variant of the point estimate method (PEM) to determine mean values and standard deviations of limit loads of engineering structures. This approach is illustrated by limit state analysis of a space truss, considering geometric and material imperfections. The calculations were performed for different random models, so the influence of random parameters on the limit load of the truss can...

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• Seismic probabilistic assessment of steel and reinforced concrete structures including earthquake-induced pounding

  Publication

  • F. Kazemi
  • N. Asgarkhani
  • A. Manguri
  • R. Jankowski

  - Archives of Civil and Mechanical Engineering - Year 2024

  Recent earthquakes demonstrate that prioritizing the retrofitting of buildings should be of the utmost importance for enhancing the seismic resilience and structural integrity of urban structures. To have a realistic results of the pounding effects in modeling process of retrofitting buildings, the present research provides seismic Probability Factors (PFs), which can be used for estimating collision effects without engaging in...

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• Investigation on Damage-Involved Structural Response of Colliding Steel Structures during Ground Motions

  Publication

  • B. Sołtysik
  • T. Falborski
  • R. Jankowski

  - Key Engineering Materials - Year 2016

  Earthquakes are the most unpredictable damaging loads which can affect civil engineering structures. Due to insufficient separation distance between adjacent structures with different dynamic properties, structural collisions may occur during ground motions. Although the research on structural pounding has recently been much advanced, the studies have mainly been conducted for concrete structures. The aim of this paper is to show...

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• The influence of brace to chord rotational connection stiffness on stability of the truss

  Publication

  • M. Krajewski

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2024

  The paper is devoted to the numerical analysis of the roof truss subjected to upward wind loading and braced at the tensioned top chord. The linear buckling analysis were performed for the beam and shell model of the structure. As the result the influence of rotational connection stiffness between the brace and the top chord on the truss stability was appointed. The biaxial strength testing machine was used to conduct the experimental...

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• Influence of nodes with positive eccentricity on load-carrying capasity of truss' top chords in trusses made of welded cold-formed members.

  Publication

  • M. Gordziej-Zagórowska
  • E. Urbańska-Galewska

  - Year 2014

  In order to establish the influence of eccentric crossing of truss members on the load-carrying capacity of the folded chord of a hat-section truss, a research model was created and preliminary numerical analysis of the truss was performed with the use of Marc Mentat programme. Distorial instability of crossheads caused by deviation of loose (unmounted) channel section web’s bends was observed. Due to the slenderness of the section’s...

• Preventing of earthquake-induced pounding between steel structures by using polymer elements – experimental study

  Publication

  • B. Sołtysik
  • T. Falborski
  • R. Jankowski

  - Procedia Engineering - Year 2017

  Pounding between two, or more, adjacent buildings during earthquakes has been identified as one of the reasons for substantial damage or even total collapse of colliding structures, so it has been the subject of numerous studies in the recent years. A major reason leading to interactions between adjacent, insufficiently separated structures results from the differences in their dynamic properties. A number of different methods...

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• Probability of limit state of bar structures. A modified Monte Carlo procedure

  Publication

  • M. Skowronek

  - Archives of Civil Engineering - Year 2005

  Praca poświecona jest zagadnieniom niezawodności i probabilistycznej analizie stanów granicznych układów prętowych. Główną ideę pracy stanowi rozkład prawdopodobieństwa stanu granicznego nośności ustroju, zdefiniowany na podstawie specjalnej procedury symulacyjnej Monte Carlo. W procedurze tej istotne jest wyznaczanie mnożników obciążenia granicznego w każdym kroku symulacyjnym. Charakterystykami rozkładu prawdopodobieństwa stanu...

• Modeling protein structures with the coarse-grained UNRES force field in the CASP14 experiment

  Publication

  • A. Antoniak
  • I. Biskupek
  • K. K. Bojarski
  • C. Czaplewski
  • A. Giełdoń
  • M. Kogut
  • M. M. Kogut
  • P. Krupa
  • A. Lipska
  • A. Liwo... and 9 others

  - JOURNAL OF MOLECULAR GRAPHICS & MODELLING - Year 2021

  The UNited RESidue (UNRES) force field was tested in the 14th Community Wide Experiment on the Critical Assessment of Techniques for Protein Structure Prediction (CASP14), in which larger oligomeric and multimeric targets were present compared to previous editions. Three prediction modes were tested (i) ab initio (the UNRES group), (ii) contact-assisted (the UNRES- contact group), and (iii) template-assisted (the UNRES-template...

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• Flexoelectricity and apparent piezoelectricity of a pantographic micro-bar

  Publication

  • V. Eremeev
  • J. Ganghoffer
  • V. Konopińska-Zmysłowska
  • N. Uglov

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Year 2020

  We discuss a homogenized model of a pantographic bar considering flexoelectricity. A pantographic bar consists of relatively stiff small bars connected by small soft flexoelectric pivots. As a result, an elongation of the bar relates almost to the torsion of pivots. Taking into account their flexoelectric properties we find the corresponding electric polarization. As a results, the homogenized pantographic bar demonstrates piezoelectric...

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• Influence of separation gap on the response of colliding models of steel structures under seismic and paraseismic excitations

  Publication

  • B. Sołtysik
  • R. Jankowski

  - Year 2016

  As a result of high urbanization, the need to erect closely-spaced buildings forces designers to consider collisions between structures taking place during ground motions. Experimental and numerical studies have confirmed that such collisions (often referred to as structural pounding) may cause serious damage to the structural elements and even lead to total collapse of colliding structures. The main reason of earthquake-induced...

• Reliability assessment of truss towers using Monte Carlo Method, PEM and RSM

  Publication

  • K. Winkelmann
  • M. Oziębło

  - Year 2015

  The paper discusses the reliability assessment of simple random truss structures using three different probabilistic methodologies: the Monte Carlo method, the Point Estimate Method and the Response Surface Method. A benchmark truss structure example is analyzed. A set of numerical calculations of critical load is performed and the results are taken as the basis of advanced probabilistic calculations. Using the samples, numerical...

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• A New Adaptive Method for the Extraction of Steel Design Structures from an Integrated Point Cloud

  Publication

  • P. Burdziakowski
  • A. Zakrzewska

  - SENSORS - Year 2021

  The continuous and intensive development of measurement technologies for reality modelling with appropriate data processing algorithms is currently being observed. The most popular methods include remote sensing techniques based on reflected-light digital cameras, and on active methods in which the device emits a beam. This research paper presents the process of data integration from terrestrial laser scanning (TLS) and image data...

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• Some remarks about numerical stability in nonlinear dynamics on the basic of truss structures.

  Publication

  • J. Chróścielewski
  • I. Lubowiecka
  • W. Witkowski

  - Year 2003

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• Probabilistic seismic assessment of RC box-girder highway bridges with unequal-height piers subjected to earthquake-induced pounding

  Publication

  • H. Rezaei
  • S. A. Moayyedi
  • R. Jankowski

  - Bulletin of Earthquake Engineering - Year 2020

  This paper uses the probabilistic seismic assessment to study the effects of pounding and irregularity on the seismic behavior of typical concrete box-girder bridges with four levels of altitudinal irregularity. To extend the results for all bridges in the same class, uncertainty related to the earthquake, structural geometries, and materials are considered. Pounding is likely to take place in two cases: the first one concerns...

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• Reliability assessment of truss towers using Monte Carlo Method, PEM and RSM

  Publication

  • K. Winkelmann
  • M. Oziębło
  • K. Rybaczyk

  - Year 2016

  The paper discusses reliability assessment of simple random truss structures using three different probabilistic methodologies: the Monte Carlo Method (MCM), the Point Estimate Method (PEM) and the Response Surface Method (RSM). A benchmark truss structure and a simplified full–size engineering tower are both analyzed. A set of ultimate load numerical calculations is performed and the results are taken as the basis of advanced...

• Experimental-Numerical Analysis of the Effect of Bar Diameter on Bond in Pull-Out Test

  Publication

  • M. Burdziński
  • M. Niedostatkiewicz

  - Buildings - Year 2022

  Bar diameter is one of the basic factors affecting bond behavior, which is still of interest due to opposing opinions regarding its effect on bond behavior in the pull-out test. This paper presents an experimental and numerical bond analysis of ribbed reinforcing bar in concrete. The aim was to experimentally evaluate the effect of bar diameter on the bond behavior in the pull-out test and to perform numerical simulations of the...

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• Selected problems of stability of steel structures.

  Publication

  • P. Iwicki

  - Przegląd Elektrotechniczny - Year 2010

  W pracy przedstawiono wyniki badań dotyczących stateczności wybranych konstrukcji stalowych. Prezentowane rozważania są oparte na klasycznych założeniach teorii prętów cienkościennych o nieodkształcalnym przekroju poprzecznym. Wyznaczono pierwszą wariację sił krytycznych pręta cienkościennego o bisymetrycznym otwartym przekroju poprzecznym uwzględniając następujące zmienne projektowe: ⎯wymiary przekroju poprzecznego, ⎯ charakterystyki...

• Load introduction to composite columns revisited—Significance of force allocation and shear connection stiffness

  Publication

  • B. Grzeszykowski
  • M. Lewandowski-Szewczyk
  • M. Niedośpiał

  - ENGINEERING STRUCTURES - Year 2023

  The AISC 360-16 Specification recommends that the design shear force between parts of a composite column in the load introduction area shall be calculated based on the force allocation at ultimate limit state. Applicability of this straightforward method to the load levels that usually arise in slender composite columns is questionable, as this capacity-based force allocation is only true when the axial force is equal to the plastic...

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• Imperfection sensitivity of multilayered composite shells

  Publication

  • A. Sabik
  • I. Kreja

  - Year 2010

  W pracy analizowana jest stateczność cylindrycznej powłoki warstwowej poddanej osiowemu ściskaniu. Badany jest wpływ początkowych imperfekcji geometrycznych na zachowanie konstrukcji. Obliczenia realizowane są w programie Nastran (ver. 6.0).

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• Peak impact force for seismic retrofit of pounding-prone structures

  Publication

  • R. Jankowski

  - Year 2005

  Celem artykułu jest wykorzystanie dwuwymiarowych wykresów pokazujących wartość maksymalnej siły zderzenia (spektrów odpowiedzi) do wzmacniania odporności sejsmicznej budowli narażonych na zderzanie się podczas trzęsień ziemi. Wyniki analizy wskazują, iż wykresy takie mogą być bardzo przydatnym narzędziem przy podejmowaniu decyzji dotyczącej wyboru metody wzmacniania.

• Modeling of truss with cold-formed section and positive eccentricity in the node

  Publication

  • M. Gordziej-Zagórowska
  • E. Urbańska-Galewska
  • R. Jankowski

  - Structure and Environment - Year 2014

  This work is dedicated to establishing the load carrying capacity of tensed and compressed truss’ nodes made of cold-formed open cross sections. The occurrence of bending in the truss’ nodes is the result of a specific production technology for system lattice girders assumed by the designer and the producer. The aim of this research is to present the methodology of conduct for creation of computational models that best depict the...

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• Formulation of spectral truss element for guided waves damage detection in spatial steel trusses

  Publication

  • J. Chróścielewski
  • M. Rucka
  • K. Wilde
  • W. Witkowski

  - Archives of Civil Engineering - Year 2009

  W pracy przedstawiono sformułowanie wielowęzłowego elementu spektralnego oraz odpowiedniego schematu całkowania ukierunkowanego na problem propagacji fal w kratownicach przestrzennych o dowolnej geometrii. Zaproponowane podejście nie ogranicza liczby węzłów w elemencie kratowym. Porównawcze rozwiązania numeryczne przeprowadzono dla konstrukcji idealnej (w stanie nieuszkodzonym) oraz dlakonstrukcji z miejscową nieregularnością w...

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• Computational Bar Size Optimization of Single Layer Dome Structures Considering Axial Stress and Shape Disturbance

  Publication

  • A. Manguri
  • N. Saeed
  • F. Kazemi
  • N. Asgarkhani
  • M. Szczepański
  • R. Jankowski

  - Year 2024

  A computational method is proposed in this paper to minimize the material usage in the construction of modern spatial frame structures by prestressing a minimal number of members. The computational optimization is conducted in two steps. Firstly, a numerical model of a single-layer dome structure is used to minimize the cross-sectional area through several iterations. Different assumed ratios (r) ranging from 0.95 to 0.75 are multiplied...

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• Influence of Spatial Structures of 316L Stainless Steel on Its Cavitation Erosion Resistance

  Publication

  • B. Śniegocka
  • M. Szkodo
  • J. Chmiel

  - Solid State Phenomena - Year 2015

  Cavitation erosion performance of modified macroscopic internal structure 316L stainless steel was investigated. The samples processed by means of SLM method were subjected to cavitation erosion test. The scanning electron microscope Philips 30/ESEM was used to examine morphology of eroded surface.

• An Approximate Linear Analysis of Structures Utilizing Incremental Loading of Force Method

  Publication

  • N. Mohammed
  • A. Aulla
  • A. Manguri

  - UKH Journal of Science and Engineering - Year 2020

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• Corrosion performance of super duplex stainless steel and pipeline steel dissimilar welded joints: a comprehensive investigation for marine structures

  Publication

  • A. K. Maurya
  • S. M. Pandey
  • R. Chhibber
  • D. Fydrych
  • C. Pandey

  - INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY - Year 2024

  This study investigates the corrosion behavior of dissimilar gas tungsten arc (GTA) welded joints between super duplex stainless steel (sDSS 2507) and pipeline steel (X-70) using electrochemical and immersion corrosion tests. The GTA welds were fabricated using ER2594 and ER309L fller metals. The study examined the electrochemical characteristics and continuous corrosion behavior of samples extracted from various zones of the weldments...

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• Behaviour of steel columns under impact

  Publication

  • B. Sołtysik
  • R. Jankowski

  - Technology and Art - Year 2012

  One of import issues related to the idea of sustainable society is the safety of civil engineering structures. The safety and reliability of steel structures under impact loading is among a number of different aims during the design state. The aim of this paper is to present the results of investigation focused on dynamic behaviour of steel columns under impact loading. Modal and transient dynamic analyses using Finite Element...

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• Identification and simulation of shells geometric initial imperfection

  Publication

  • J. Górski
  • T. Mikulski

  - Year 2008

  Przedstawiono stochastyczną analizę stalowych zbiorników walcowych ze wstępnymi imperfekcjami geometrycznymi. Imperfekcje opisano za pomocą jednorodnych pól losowych.

• Load carrying capacity of the eccentric joint in the truss made of open cross-sections

  Publication

  • M. Gordziej-Zagórowska
  • E. Urbańska-Galewska

  - MATEC Web of Conferences - Year 2018

  The influence of eccentricity at intersections of truss members on the load carrying capacity of the truss joint is presented in the paper. The research truss elements were designed as cold-formed open cross section. Analytical calculations, numerical analysis and experimental research were conducted to reveal how the eccentricity affects the effort of material in the joint area. The results of analysis and investigations are compared...

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• Enhancing seismic performance of buckling-restrained brace frames equipped with innovative bracing systems

  Publication

  • B. Mohebi
  • M. Sartipi
  • F. Kazemi

  - Archives of Civil and Mechanical Engineering - Year 2023

  Nowadays, to improve the performance of conventional bracing systems, in which, buckling in the pressure loads is the main disadvantage, the buckling-restrained brace (BRB) is introduced as a solution. In this study, the performance of the BRB system was improved with innovative lateral-resisting systems of double-stage yield buckling-restrained brace (DYB), and a combination of DYB improved with shape memory alloy (SMA) materials...

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• Underwater wet welding of S1300 ultra-high strength steel

  Publication

  • J. Tomków
  • M. Landowski
  • D. Fydrych
  • G. Rogalski

  - MARINE STRUCTURES - Year 2022

  Marine Structures Volume 81, January 2022, 103120 Underwater wet welding of S1300 ultra-high strength steel Author links open overlay panelJacekTomkówGrzegorzRogalski https://doi.org/10.1016/j.marstruc.2021.103120 Get rights and content Under a Creative Commons licenseopen access Highlights • Technological method of S1300 steel underwater weldability improving was proposed. • Number of cracks and hardness of welded joints was...

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• A framework to analyse the probability of accidental hull girder failure considering advanced corrosion degradation for risk-based ship design

  Publication

  • K. Wołoszyk
  • F. Goerlandt
  • J. Montewka

  - RELIABILITY ENGINEERING & SYSTEM SAFETY - Year 2024

  Ship’s hull girder failure could result from maritime accident that can cause human life loss, environmental disaster, and major economic impacts. In risk-based ship design paradigm, accounting for rare phenomena (e.g. ship-ship collision or grounding) is important to provide safe and durable structure. In-service corrosion-induced hull degradation should be considered at the design stage, as it can significantly affect structural...

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• Modelling and analysis of beam/bar structure by application of bond graphs

  Publication

  • C. Orlikowski
  • R. Hein

  - Journal of Theoretical and Applied Mechanics - Year 2011

  The paper presents an uniform, port-based approach to modelling of beam/bar systems (trusses). Port-based model of such distributed parameter system has been defined by application of the bond graph methodology and the distributed transfer function method (DTFM). The proposed method of modelling enables to formulate input data for computer analysis by application of the DTFM. The constructed computational package enables the frequency...

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• Evaluation of overstrength-based interaction checks for columns in steel moment frames

  Publication

  • T. Falborski
  • G. Murtas
  • A. Elkady
  • D. Lignos
  • A. Kanvinde

  - JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH - Year 2025

  Current design guidelines in the United States require a check for only column axial force under overstrength seismic loads for capacity-designed steel moment frames. A study is presented to examine the implications of this guidance, which disregards the column interaction check (including both axial force and moment) under overstrength seismic loads. A set of thirteen steel moment frames are designed using multiple rules that...

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• Modele numeryczne uwzględniające tarczową pracę pokrycia dachowego z blach trapezowych

  Publication

  • N. Korcz-Konkol

  - Czasopismo Inżynierii Lądowej, Środowiska i Architektury - Year 2017

  W artykule porównano wybrane sposoby uwzględniania w modelowaniu numerycznym tarczowej pracy pokrycia dachowego z blachy trapezowej, możliwe do zrealizowania w programie Autodesk Robot Structural Analysis Professional 2015, w celu oceny słuszności stosowania ich do obliczeń konstrukcji nośnej współpracującej z poszyciem z blachy trapezowej. Analizy przeprowadzono dla pojedynczej przepony. Za pomocą powłokowych elementów skończonych...

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• Application of guided wave propagation in diagnostics of steel bridge components

  Publication

  • M. Rucka
  • B. Zima
  • R. Kędra

  - Archives of Civil Engineering - Year 2014

  Early detection of potential defects and identification of their location are necessary to ensure safe, reliable and long-term use of engineering structures. Non-destructive diagnostic tests based on guided wave propagation are becoming more popular because of the possibility to inspect large areas during a single measurement with a small number of sensors. The aim of this study is the application of guided wave propagation in...

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• Use laser to measure girder deflection

  Publication

  • K. Daliga
  • Z. Kurałowicz

  - REPORTS ON GEODESY AND GEOINFORMATICS - Year 2011

  The paper presents a new, simple way to measure deflection of selected intens using the device dkkz-2010, which user a laser light source.

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• Lessons from application of the UNRES force field to predictions of structures of CASP10 targets

  Publication

  • Y. He
  • M. Mozolewska
  • P. Krupa
  • A. Sieradzan
  • T. Wirecki
  • A. Liwo
  • K. Kachlishvili
  • S. Rackovsky
  • D. Jagiela
  • R. Slusarz... and 5 others

  - PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA - Year 2013

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• Hybrid Numerical-Analytical Approach for Force Prediction in End Milling of 42CrMo4 Steel

  Publication

  • M. Madajewski
  • S. Wojciechowski
  • N. Znojkiewicz
  • P. Twardowski

  - Year 2019

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• The influence of dimensional accuracy on steel structures cost calculation

  Publication

  • E. Urbańska-Galewska

  - Year 2008

  W referacie przedstawiono zależność pomiędzy wartością tolerancji a kosztami wytwarzania budowlanych konstrukcji stalowych. Opisano zasady klasyfikacji tolerancji prętowych konstrukcji stalowych z uwagi na porawny montaż konstrukcji wyrażony równaiem pętli montażowej. Przedstawiono podstawy analizy i syntezy tolerancji oraz zaproponowano nową formułę optymalizacji kosztów wytwarzania. Wskazano metody rozwiązania zadania optymalizacyjnego.

• Effects of Deck-Abutment Pounding on the Seismic Fragility Curves of Box-Girder Highway Bridges

  Publication

  • S. A. Moayyedi
  • H. Rezaei
  • A. Kalantari
  • R. Jankowski

  - JOURNAL OF EARTHQUAKE ENGINEERING - Year 2024

  Earthquake-induced pounding in bridges is a complex contact phenomenon in which the dynamic responses of structures, including collisions between deck and abutments, are strongly related to structural properties and earthquake excitation. The goal of this study is to develop and compare the seismic fragility curves of overall system and individual components of regular and irregular box-girder highway bridges in two cases: with...

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• Thermal visualization of Ostwald-de Waele liquid in wavy trapezoidal cavity: Effect of undulation and amplitude

  Publication

  • A. Hijaz
  • R. Mahmood
  • M. B. Hafeez
  • A. H. Majeed
  • S. Askar
  • H. Shahzad

  - Case Studies in Thermal Engineering - Year 2022

  The present study is concerned with the numerical simulations of Ostwald-de Waele fluid flow in a wavy trapezoidal cavity in the presence of a heated cylinder situated at the center of the cavity. The work consists in characterizing the mixed convection as a function of the intensity of heat flow. The flow behaviour and temperature distribution in a cavity are the main focus of this study. The lower wall of the cavity is fixed...

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• Entire fracture surface topography parameters for fatigue life assessment of 10H2M steel

  Publication

  • W. Macek
  • M. Kopec
  • A. Mirowska
  • Z. Kowalewski

  - JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH - Year 2024

  In this paper, the entire fracture surface approach was used to assess an effect of 280,000 h of exploitation under internal pressure of 2.9 MPa and high temperature of 540 °C on the fatigue response of 10H2M (10CrMo9–10) power engineering steel. The mechanical testing was carried out on the hourglass specimens produced from the as-received, unused pipeline and the same material after long-time exploitation. The uniaxial tensile...

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• Guided wave propagation in debonding detection in CFRP-reinforced steel plate-like structures

  Publication

  • B. Zima
  • Ł. Breńkacz

  - OCEAN ENGINEERING - Year 2024

  The present study investigates the guided wave propagation in multilayered steel specimens reinforced with carbon fiber reinforced polymer (CFRP) through theoretical, numerical, and experimental means. The effectiveness of externally bonded reinforcement (EBR) relies heavily on the bonding quality between the CFRP and the substrate. Premature debonding, a prevalent and hazardous defect, can arise from suboptimal manufacturing processes,...

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• Controlling nodal displacement of pantographic structures using matrix condensation and interior-point optimization: A numerical and experimental study

  Publication

  • A. Manguri
  • N. Saeed
  • R. Jankowski

  - ENGINEERING STRUCTURES - Year 2024

  This study presents an innovative approach for the precise control of nodal displacements in pantographic structures. The method is founded on the Matrix Condensation of Force Method, seamlessly integrated with an Interior Point Optimization algorithm. This combination offers a unique advantage by allowing users to manipulate displaced nodes within a defined coordination domain. Furthermore, this approach introduces the Interior...

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• Influence of pitting corrosion on strength of steel ships and offshore structures

  Publication

  • M. Jakubowski

  - Polish Maritime Research - Year 2012

  Praca dotyczy wpływu korozji wżerowej na własności mechaniczne stali o zwykłej i podwyższonej wytrzymałości oraz na wytrzymałość stalowych konstrukcji przy obciążeniach statycznych i quasi- statycznych. Artykuł oparty jest głównie na japońskich publikacjach. W próbie rozciągania, korozja wżerowa obniża nieznacznie obciążenie odpowiadające granicy plastyczności Re(nieznacznie) i wytrzymałości na rozciąganie Rm (silniej, redukuje...

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• Fatigue life tests of steel laser-welded sandwich structures

  Publication

  • D. Boroński
  • J. Szala

  - Polish Maritime Research - Year 2006

  W publikacji zaprezentowano rezultaty systematycznych badań trwałości zmęczeniowej elementarnych połączeń wykonanych techniką spawania laserowego dla różnych wariantów geometrii złącz. Pokazano uzyskane wyniki i ich aproksymację, porównano uzyskane rezultaty dla różnych geometrii.

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