Microscopic Approach of Plastic Deformation of Particles and Coupled Analysis with Macroscopic Approach

颗粒塑性变形的微观方法及其与宏观方法的耦合分析

• 批准号: 10650084
• 负责人: MORI Ken-ichiro
• 金额: $ 1.92万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650084/
• 关键词: Particle Method; Powder compaction; Powder Particle; Plastic Deformation; Finite Element Method; Porous Metal

An approach for simulating microscopic densification behavior of powder particles in compaction using a finite element method is proposed. In this method, the contacts between powder particles during the compaction are detected, and plastic deformation of the particles is calculated by the finite element method in contact. It is assumed that the finite elements are porous metals having an average relative density calculated from the volumes of the powder and pore inside the element. The elements are classified into the triangular and quadrilateral ones used in the conventional finite element methods and a linear one for the simple compression. The accuracy of the stiffness for plastic deformation of powder particles in plane-strain compaction is compared with that for a model experiment using aluminum rod.

提出了一种用有限元法模拟粉末颗粒在压制过程中微观致密化行为的方法。在该方法中，粉末颗粒之间的接触在压实过程中检测，和颗粒的塑性变形的有限元方法计算接触。假设有限元是多孔金属，其平均相对密度由元件内部的粉末和孔的体积计算。单元分为三角形单元和四边形单元以及线性单元。对平面应变压制中粉末颗粒塑性变形刚度的精度与铝杆模型试验进行了比较。

项目成果

森 謙一郎: "有限要素法を用いた圧粉成形の粒子系解析法"日本機械学会論文集A編. 65・639. 2224-2229 (1999)

Kenichiro Mori：“使用有限元法进行粉末压制的颗粒系统分析方法”，日本机械工程学会会刊，A 版 2224-2229（1999 年）。

Ken-ichiro Mori: "Microscopic Approach of Powder Compaction Using Finite Element Method"Transactions of the Japan Society of Mechanical Engineering. 65-639. 2224-2229 (1999)

Ken-ichiro Mori：“使用有限元方法进行粉末压实的微观方法”日本机械工程学会会刊。