NOVEL PROCEDURE TO DETERMINE ACTUAL STRESS-STRAIN CURVES

被引：0
|
作者：
Milosevic, N. [1 ]
Sedmak, A. [2 ]
Martic, I [1 ]
Prokic-Cvetkovic, R. [2 ]
机构：
[1] Innovat Ctr Fac Mech Engn, Belgrade, Serbia
[2] Univ Belgrade, Fac Mech Engn, Belgrade, Serbia
来源：
STRUCTURAL INTEGRITY AND LIFE-INTEGRITET I VEK KONSTRUKCIJA | 2021年 / 21卷 / 01期
关键词：
stress-strain diagram; undermatched weld; digital image correlation (DIC); finite element method (FEM); RECTANGULAR CROSS-SECTION; DIGITAL IMAGE CORRELATION; TENSILE PROPERTIES;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method.
引用
收藏
页码：37 / 40
页数：4
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