一个新的损伤演化方程及其在层裂中的应用

周洪强; 秦承森; 张树道; 张凤国; 刘文韬; 王裴

doi:10.11858/gywlxb.2005.03.002

一个新的损伤演化方程及其在层裂中的应用

doi: 10.11858/gywlxb.2005.03.002

北京应用物理与计算数学研究所，北京 100080

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通讯作者:
周洪强

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出版历程
- 收稿日期: 2004-09-09
- 修回日期: 2005-04-17
- 发布日期: 2005-09-05

A New Statistical Meso-Scopic Damage Model and Its Applications in Spalling Processes

Institute of Applied Physics and Computational Mathematics, Beijing 100080, China

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Corresponding author: ZHOU Hong-Qiang

摘要

摘要: 采用统计细观损伤力学方法，基于延性金属断裂过程的孔洞演化机理，提出一个新的损伤演化方程，该方程在一定的条件下与由空心球体胞模型导出的损伤方程形式相同。在此基础上，将新的损伤演化方程编入一维Lagrange有限差分动力学程序，对OFHC铜的平板对称正碰撞层裂实验进行了数值模拟，计算结果与实验吻合得较好。
- 统计细观损伤力学 /
- 层裂 /
- 细观孔洞 /
- 孔隙度 /
- 数值模拟
Abstract: A new damage evolution equation for ductile materials is presented based on the statistical meso-scopic damage mechanism, which consistent well with the results of analysing the mechanical responses for the spherical cell containing a single central spherical void. The model presented is incorporated in a hydrodynamic one-dimensional finite-difference computer code, to simulate the process of spallation of OFHC copper. The calculation is in good agreement with the experimental data.
- statistical meso-scopic damage mechanics /
- spallation /
- microscopic void /
- porosity /
- numerical simulation

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参考文献(18)

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