Theoretical and experimental study of specimens with stress concentrators in dependence of stress triaxiality

Ana Maria Comanici, Viorel Goanta, Paul Doru Barsanescu
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引用次数: 1

Abstract

The literature presents several results referring to multiaxial tests of stress concentrators specimens. Different types of these specimens are presented and they were used accordingly to the stress triaxiality as follows: butterfly specimen for high degree of stress triaxiality, plane specimen for medium state of triaxiality and cylindrical specimen for low degree of triaxiality. This article shows the results of experimental determinations, finite element analysis and theoretical study of two types of plate specimens with stress concentrators and it aims to obtain high stress state in failure section (volume), more uniform stress distribution and stress ratio to be constant until failure.

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应力集中器与应力三轴关系的理论与实验研究
文献介绍了应力集中器试件多轴试验的几个结果。提出了不同类型的试件,并根据应力三轴性分别使用:高应力三轴性为蝴蝶试件,中等应力三轴性为平面试件,低应力三轴性为圆柱试件。本文展示了两种带应力集中器的板试件的实验测定、有限元分析和理论研究结果,旨在获得破坏截面(体积)的高应力状态、更均匀的应力分布和直至破坏的应力比恒定。
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