物理学报2011，Vol.60Issue(12)：590-594,5.
粉末高速压制成形过程中的应力波分析
The pressure wave analysis in high velocity compaction process
摘要
Abstract
The pressure propagation in high velocity compaction process is simulated based on the discrete element method in this paper.Because the full process is divided into elastic loading,plastic deformation and elastic unloading,the governing equations are established in three stages respectively.With the help of computing software PFC2D,the impacting force through different layers of powders can be obtained,which cannot be observed in experiment.The simulation results show obviously a delay phenomenon and serrate waves with different gradients in loading and unloading processes.Finally,the simulated low-level stress waves are compared with available experimental data,which are consistent with each other.关键词
高速压制成形/离散单元法/接触模型/应力波Key words
high velocity compaction/discrete element method/contact model/stress waves分类
数理科学引用本文复制引用
王爽,郑洲顺,周文..粉末高速压制成形过程中的应力波分析[J].物理学报,2011,60(12):590-594,5.基金项目
国家自然科学基金 （）
国家重点基础研究发展计划 （）
中南大学优秀博士学位论文扶植基金（批准号：2010YBFZ074）资助的课题 （）
