Application of a microstructural model to simulation of a tini beam bending performance and calculation of thickness stress distributions

Aleksandr E. Volkov, Margarita E. Evard, Natalia A. Volkova, Egor A. Vukolov

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

This work presents a numerical simulation of a TiNi shape memory alloy (SMA) beam performance in the mode of pure bending with the use of Bernoulli-Euler hypotheses. The beam is subjected to an action of a bending torque, an axial force and temperature variations. Thickness distributions of the stress and strain as well as the beam deflection for various stages of thermomechanical loading are obtained. The formulation of the boundary-value problem includes the equations describing the mechanical equilibrium and the constitutive behavior of an SMA representative volume, for which two models - a microstructural and a macroscopic ones are used. They account for the deformations due to elasticity, thermal expansion and phase transformation. It is noted that since the microstructural model automatically accounts for the tension-compression asymmetry of TiNi the use of this model for the description of the SMA behavior predicts that the neutral line of the bent beam does not pass through its center and the beam performance in the mode of bending differs from that in the mode of tension.

Язык оригиналаанглийский
Название основной публикации9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
РедакторыAyech Benjeddou, Nazih Mechbal, Jean-Francois Deu
ИздательInternational Center for Numerical Methods in Engineering
Страницы686-695
Число страниц10
ISBN (электронное издание)9788494919466
СостояниеОпубликовано - 2019
Событие9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019 - Paris, Франция
Продолжительность: 8 июл 201911 июл 2019

Серия публикаций

Название9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019

конференция

конференция9th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2019
СтранаФранция
ГородParis
Период8/07/1911/07/19

Предметные области Scopus

  • Материаловедение (все)
  • Энергия (все)
  • Загрязнение

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