基于ABAQUS的SPH粒子生成及其在高速冲击计算中应用

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (17) : 140-145.

论文

肖毅华，董晃晃，平学成

作者信息 +

A PARTICLE GENERATION METHOD BASED ON ABAQUS AND ITS APPLICATION TO HIGH VELOCITY IMPACT CALCULATION

Xiao Yi-hua， Dong Huang-huang， Ping Xue-cheng

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文章历史 +

摘要

提出一种新的基于ABAQUS的SPH粒子生成方法。采用Python语言编写脚本，通过ABAQUS运行脚本实现粒子划分。在脚本中，利用ABAQUS提供的内部函数，先导入几何模型，再进行几何区域均匀正交分割，最后将分割所得的各子区域转化成粒子。该方法适用于任意区域，生成的粒子以规则的矩形分布为主。通过对半圆环区域进行粒子划分，对比了基于该方法和传统方法生成的粒子的近似精度。以截卵形弹体为例，说明了通过该方法结合参数化几何建模易于实现参数化粒子模型的建立。应用生成的粒子进行了高速冲击问题的SPH模拟，验证了该方法在实际应用中的可行性。

Abstract

A novel method for particle generation is proposed based on ABAQUS. For the method, a script is constructed in programming language Python, and run by ABAQUS to generate particles. In the script, built-in functions of ABAQUS are firstly used to import geometry model, and then to search for its boundaries and partition the domain. A particle model is finally established by converting sub-domains obtained from partition into particles. The present method is available for arbitrary domains and produces particles with basically rectangular distribution. An example of particle generation for a half of ring is used to compare the approximation accuracy of particles by both the present and traditional methods. The case of a truncated-ogive-nose projectile is given to illustrate the ablity to establish parameterized particle model by combining the present method with the parameterized geometric modeling of ABAQUS. Finally, particles generated by the new method are employed to SPH calculation of high velocity impact, which demonstrates its feasibility in practical application.

导出引用

肖毅华，董晃晃，平学成. 基于ABAQUS的SPH粒子生成及其在高速冲击计算中应用[J]. 振动与冲击, 2016, 35(17): 140-145

Xiao Yi-hua， Dong Huang-huang， Ping Xue-cheng. A PARTICLE GENERATION METHOD BASED ON ABAQUS AND ITS APPLICATION TO HIGH VELOCITY IMPACT CALCULATION[J]. Journal of Vibration and Shock, 2016, 35(17): 140-145

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