| 应力波和层裂计算中的光滑粒子法 |
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| 引用本文： | 卞梁,王肖钧,肖卫国,劳俊. 应力波和层裂计算中的光滑粒子法[J]. 中国科学技术大学学报, 2007, 37(7): 706-710,723 |
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| 作者姓名： | 卞梁 王肖钧 肖卫国 劳俊 |
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| 作者单位： | 中国科学技术大学力学和机械工程系,安徽合肥,230027 |
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| 摘 要： | 采用光滑粒子法,数值模拟了平板碰撞下一维弹塑性应变波的传播及其在自由面和固定端的反射.通过引入含损伤的应变率相关的本构方程,对铝-锂合金的层裂实验进行了数值模拟.计算结果表明,光滑粒子法能很好地模拟应力波的传播和相互作用,层裂的计算结果与实验结果也比较吻合.
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| 关 键 词： | 光滑粒子法 应力波 数值模拟 层裂 |
| 文章编号： | 0253-2778（2007）07-0706-05 |
| 修稿时间： | 2007-02-272007-05-31 |
Numerical simulation of stress waves and spallation by smoothed particle hydrodynamics |
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| BIAN Liang,WANG Xiao-jun,XIAO Wei-guo,LAO Jun. Numerical simulation of stress waves and spallation by smoothed particle hydrodynamics[J]. Journal of University of Science and Technology of China, 2007, 37(7): 706-710,723 |
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| Authors: | BIAN Liang WANG Xiao-jun XIAO Wei-guo LAO Jun |
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| Affiliation: | Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | By means of smoothed particle hydrodynamics,the propagation and reflection at free surface and fixed end of one dimensional elasticplastic strain waves induced by planar impact were simulated numerically.The spallation experiments of Al-Li alloy were also numerically simulated by inserting the damage coupled rate-dependent constitutive equation into the SPH program. The results show that the method can well simulate the propagation and interaction of stress waves and achieve good accuracy in the numerical study of spallation. |
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| Keywords: | smoothed particle hydrodynamics stress wave numerical simulation spallation |
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