A mesomechanical analysis of the stress–strain localisation in friction stir welds of polycrystalline aluminium alloys; Meccanica; Vol. 51, iss. 2

A mesomechanical analysis of the stress–strain localisation in friction stir welds of polycrystalline aluminium alloys; Meccanica; Vol. 51, iss. 2

Bibliografische gegevens
Parent link:Meccanica
Vol. 51, iss. 2.— 2016.— [P. 319-328]
Coauteur: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра физики высоких технологий в машиностроении (ФВТМ)
Andere auteurs: Balokhonov R. R. Ruslan Revovich, Romanova V. A. Varvara Aleksandrovna, Batukhtina E. E. Ekaterina Evgenjevna, Martynov S. A. Sergey Andreevich, Zinovjev A. V. Aleksandr Valerjevich, Zinovieva O. S. Olga Sergeevna
Samenvatting:Title screen
A numerical analysis is presented of the microstructural effects on the deformation and fracture of friction stir welds in aluminium alloys. A dynamic boundary-value problem in a plane strain formulation is solved numerically by the finite-difference method. Experimental polycrystalline microstructures inherent in different weld zones—base material, weld nugget, and thermo-mechanically affected zones—were accounted for explicitly in the calculations. To simulate the mechanical response of individual grains, use was made of an elastic–plastic formulation of the problem accounting for isotropic strain hardening, including the Hall–Petch effect, and of a fracture model allowing for crack initiation and growth in the regions of maximum equivalent plastic strains. Plastic strain and fracture localisation is shown to depend on the strength of welded materials.
Режим доступа: по договору с организацией-держателем ресурса
Taal:Engels
Gepubliceerd in: 2016
Onderwerpen:
электронный ресурс
труды учёных ТПУ
микроструктура
численное моделирование
поликристаллы
локализованная пластическая деформация
сварка трением
Online toegang:http://dx.doi.org/10.1007/s11012-015-0250-9
Formaat: Elektronisch Hoofdstuk
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=645850

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