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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, PP. 201-205

Keywords: 统计细观损伤力学,层裂,细观孔洞,孔隙度,数值模拟

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Abstract:

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。

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