| 高速碰撞数值计算中的SPH自适应粒子分布法 |
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| 引用本文： | 卞梁,王肖钧,章杰.高速碰撞数值计算中的SPH自适应粒子分布法[J].爆炸与冲击,2009,29(6):607-612. |
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| 作者姓名： | 卞梁 王肖钧 章杰 |
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| 作者单位： | 1.中国科学技术大学近代力学系，安徽 合肥 230027 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金项目 |
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| 摘 要： | 针对传统光滑粒子法在计算高速碰撞问题时会出现近邻粒子逸出核函数影响域而产生数值破坏这一缺陷，提出了一种根据粒子间距变化自动添加、合并粒子的SPH自适应粒子分布算法。采用该方法对Taylor碰撞和超高速碰撞问题进行了数值模拟，结果表明，该方法可以有效地消除计算中出现的数值破坏，提高计算精度。
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| 关 键 词： | 固体力学 自适应粒子分布法 光滑粒子法 高速碰撞 |
A new adaptive SPH method for hypervelocity impact simulation |
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| BIAN Liang,WANG Xiao-jun,ZHANG Jie.A new adaptive SPH method for hypervelocity impact simulation[J].Explosion and Shock Waves,2009,29(6):607-612. |
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| Authors: | BIAN Liang WANG Xiao-jun ZHANG Jie |
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| Institution: | 1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China |
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| Abstract: | Numerical fracture induced by neighbor particles moving out of the influencing domain of the kernel function may occur in the numerical simulation of hypervelocity impact problems by the standard SPH method.A new adaptive SPH method by adding and merging particles according to the distance between particles was developed to eliminate the numerical fracture.Numerical simulations were carried out on the Taylor and hypervelocity impact samples.Simulated results display that the new adaptive SPH method can effe... |
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| Keywords: | solid mechanics adaptive particle distribution SPH hypervelocity impact |
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