Wyniki wyszukiwania dla: NONLOCAL MODELS

• Nonlocal Models of Plates and Shells with Applications in Micro- and Nanomechanics

  Publikacja

  • M. Malikan

  - Rok 2022

  Nowadays, the use of small-scale structures in micro/nanomachines has become more and more widespread. The most important applications of such small-sized parts are in micro-electro-mechanical systems (MEMS) as well as nano-electro-mechanical systems (NEMS) as actuators, sensors, energy harvesters. For example, nanosensors are nanoscale devices that measure physical quantities and convert these to signals that can be detected and...

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• Journal of Peridynamics and Nonlocal Modeling

  Czasopisma

  ISSN: 2522-896X , eISSN: 2522-8978

• Thermodynamically consistent nonlocal theory of ductile damage

  Publikacja

  • H. Stumpf
  • J. Makowski
  • J. Górski
  • K. Hackl

  - Rok 2005

  Przedstawiono termodynamicznie zgodną, słabo-nielokalną teorię zniszczenia plastycznego. Wykorzystano klasyczne dynamiczne zasady zachowania pędu i momentu pędu w przestrzeni fizycznej i materialnej. Przyjęto równania konstytutywne i zdefiniowano ich niezmienniczą formę i termodynamicznie dopuszczalną postać. Wykazano, że fizyczne i materialne siły i naprężenia składają się z dwóch części, niedyssypatywnego składnika otrzymanego...

• Stability analysis of nanobeams in hygrothermal environment based on a nonlocal strain gradient Timoshenko beam model under nonlinear thermal field

  Publikacja

  • S. K. Jena
  • S. Chakraverty
  • M. Malikan

  - Journal of Machinery Manufacture and Reliability - Rok 2020

  This article is dedicated to analyzing the buckling behavior of nanobeam subjected to hygrothermal environments based on the principle of the Timoshenko beam theory. The hygroscopic environment has been considered as a linear stress field model, while the thermal environment is assumed to be a nonlinear stress field based on the Murnaghan model. The size-dependent effect of the nanobeam is captured by the nonlocal strain gradient...

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• First-order differential equations with nonlocal boundary conditions

  Publikacja

  • T. Jankowski

  - DYNAMIC SYSTEMS AND APPLICATIONS - Rok 2015

  We study a first-order boundary value problem subject to some boundary conditions given by Riemann-Stieltjes integrals. Using a monotone iterative method, we formulate sufficient conditions which guarantee the existence of extremal or quasi-solutions in the corresponding region bounded by upper and lower solutions of our problems. The case when a unique solution exists is also investigated. Some examples are given to illustrate...

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• Nonlocal problems for functional partial differential equations of firstorder

  Publikacja

  • J. Turo

  - Zeszyty Naukowe Politechniki Gdańskiej. Matematyka - Rok 2002

  Rozważa się istnienie uogólnionych rozwiązań nielokalnych problemów dla quasiliniowych i nieliniowych równań różniczkowo-funkcyjnych cząstkowych pierwszego rzędu. Dowody twierdzeń bazują na metodzie bicharakterystyk i metodzie kolejnych przybliżeń.

• Torsional stability capacity of a nano-composite shell based on a nonlocal strain gradient shell model under a three-dimensional magnetic field

  Publikacja

  • M. Malikan
  • M. Krasheninnikov
  • V. Eremeev

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2020

  This paper considers a single-walled composite nano-shell (SWCNS) exposed in a torsional critical stability situation. As the magnetic field affects remarkably nanostructures in the small size, a three-dimensional magnetic field is assessed which contains magnetic effects along the circumferential, radial and axial coordinates system. Based on the results of the nonlocal model of strain gradient small-scale approach and the first-order...

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• Extending loophole-free nonlocal correlations to arbitrarily large distances

  Publikacja

  • A. Chaturvedi
  • G. Viola
  • M. Pawłowski

  - npj Quantum Information - Rok 2024

  Quantum theory allows spatially separated observers to share nonlocal correlations, which enable them to accomplish classically inconceivable information processing and cryptographic feats. However, the distances over which nonlocal correlations can be realized remain severely limited due to their high fragility to noise and high threshold detection efficiencies. To enable loophole- free nonlocality across large distances, we introduce...

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• HYGRO-MAGNETIC VIBRATION OF THE SINGLE-WALLED CARBON NANOTUBE WITH NONLINEAR TEMPERATURE DISTRIBUTION BASED ON A MODIFIED BEAM THEORY AND NONLOCAL STRAIN GRADIENT MODEL

  Publikacja

  • J. Subrat Kumar
  • S. Chakraverty
  • M. Malikan
  • H. M. Sedighi

  - International Journal of Applied Mechanics - Rok 2020

  In this study, vibration analysis of single-walled carbon nanotube (SWCNT) has been carried out by using a refined beam theory, namely one variable shear deformation beam theory. This approach has one variable lesser than a contractual shear deformation theory such as first-order shear deformation theory (FSDT) and acts like classical beam approach but with considering shear deformations. The SWCNT has been placed in an axial or...

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• Uniform Model Interface for Assurance Case Integration with System Models

  Publikacja

  • A. Wardziński
  • P. Jones

  - Rok 2017

  Assurance cases are developed and maintained in parallel with corresponding system models and therefore need to reference each other. Managing the correctness and consistency of interrelated safety argument and system models is essential for system dependability and is a nontrivial task. The model interface presented in this paper enables a uniform process of establishing and managing assurance case references to various types...

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