摘要
应用再生核质点法实现了冲击过程的数值模拟．为解决冲击过程伴随的材料和几何非线性问题,数值分析中采用增量法．针对冲击速度较低的情况,假设冲击过程为小应变,并引入弹塑性增量本构关系,推导出冲击过程的再生核质点法计算控制方程．采用修正配点法,以满足其本质边界条件．数值模拟结果表明,实例中弹体变形分析结果与ANSYS有限元分析结果一致．
Dynamic impact processes was analyzed and simulated with reproducing-kernel particle method （RKPM）. To solve the nonlinear problem, such as material nonlinearity and geometrical nonlinearity, incremental method was used. For a impact process with a normal impact velocity, the control equation for RKPM was deduced based on a small strain and incremental elasto-plastic constitutive law. The modified collocation method was applied to satisfy the essential boundary conditions. The simulation results of an impact process with RKPM show that the deformation velocity of a solid bullet obtained with RKPM is consistent with that calculated with ANSYS.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2007年第2期223-228,共6页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目50674002
安徽理工大学引进人才基金2006YB66
关键词
无网格法
再生核质点法
有限元法
冲击动力学
meshless method
reproducing kernel particle method
FEM
impact dynamics
