Influence of geometry on stress state in bulk characterization tests

IF 1 4区工程技术 Q4 MECHANICS

Comptes Rendus Mecanique Pub Date : 2019-12-01 DOI:10.1016/j.crme.2019.10.003

Sonda Moakhar, Hamdi Hentati, Maher Barkallah, Jamel Louati, Mohamed Haddar

引用次数: 4

Abstract

This paper is concerned with the selection of the geometries of test specimens for bulk metal characterization tests. Simulations of characterization tests on cylindrical, notched, and shear specimens were conducted to allow for the analysis of stress state evolution during the tests and to evidence the impact of geometry on stress state. Both stress triaxiality and Lode parameter were considered for selecting representative specimens. Three choice criterions were regarded: the diversification of stress states as well as the constancy and the nearness of stress state indicators to the theoretical values along the deformation.

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几何形状对体特性试验中应力状态的影响

本文讨论了体金属特性试验中试样几何形状的选择问题。在圆柱形、缺口和剪切试样上进行了模拟表征试验，以便分析试验期间的应力状态演变，并证明几何形状对应力状态的影响。选取具有代表性的试样时，考虑了应力三轴性和Lode参数。考虑了三种选择准则:应力状态的多样化以及应力状态指标沿变形方向的稳定性和与理论值的接近性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Comptes Rendus Mecanique 物理-力学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

12 months

期刊介绍： The Comptes rendus - Mécanique cover all fields of the discipline: Logic, Combinatorics, Number Theory, Group Theory, Mathematical Analysis, (Partial) Differential Equations, Geometry, Topology, Dynamical systems, Mathematical Physics, Mathematical Problems in Mechanics, Signal Theory, Mathematical Economics, … The journal publishes original and high-quality research articles. These can be in either in English or in French, with an abstract in both languages. An abridged version of the main text in the second language may also be included.