节点文献
带缺口圆试棒的韧性损伤细观力学分析
An Analysis of Ductile Damage by Micromechanics for Notched Specimen
【摘要】 本文利用修正的 Gurson 塑性势和有限变形理论,建立了有限变形下韧性损伤的弹塑性有限元方程,并给出了一种孔洞体积分数率的演化模型.利用数值方法,详细地研究了缺口试棒的缺口曲率半径对其损伤分布和破坏形式以及应力三轴度的影响.
【Abstract】 Elastoplastic finite element formulation of ductile damage underfinite deformation is established by means of the modified Gurson’s plasticpotential theory.An evolutionary model of void volume fraction is alsosuggested.By using the numerical mathod,the effects of the curvature radiusof the notched specimen on damage distribution,as well as the rupture formand stress triaxiality are researched in detail.
【关键词】 Gurson 塑性势;
韧性损伤;
应力三轴度;
孔洞体积分数;
【Key words】 Gurson’s plastic potential; ductile damage; stress triaxiality; void volume fraction;
【Key words】 Gurson’s plastic potential; ductile damage; stress triaxiality; void volume fraction;
【基金】 国家自然科学资助项目
- 【文献出处】 上海交通大学学报 ,Journal of Shanghai Jiaotong University , 编辑部邮箱 ,1990年Z1期
- 【被引频次】3
- 【下载频次】105