EXPERIMENTAL INVESTIGATION INTO PLASTIC DAMAGE OF MICROVOIDS WITH INTERACTION

作     者：方竞 倪受庸 杨宏伟 白树林 戴福隆 

作者机构：Dept.of Mechanics & Engng.SciencePeking UniversityBeijing 100871China Dept.of Engng.MechanicsTsinghua UniversityBeijing 100084China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：1997年第13卷第3期

页      面：280-288页

核心收录：

学科分类：07[理学] 070104[理学-应用数学] 0701[理学-数学] 

基　　金：The project supported by the National Natural Science Foundation of China 

主　　题：void damage flow localization plastic strain field void interaction 

摘      要：A mechanism of plastic how localization in ductile matter near microvoids is studied. The voids with the size-scale of micromillimeter exist in sheet specimens under tensile loading, and the plastic strain held around voids is obtained by digital image processing of deformed grids. The size growth of the microvoids, the spacing change of the neighboring voids, and the development of shear bands in the ligament between the voids, are presented by experimental results accompanied with the plastic strain distribution, that gives good interpretation to the process of void growth and coalescence with the how localization in the ligaments.