非规则曲面的离散元法分析模型建模软件

J4 ›› 2012, Vol. 30 ›› Issue (1): 23-29.

非规则曲面的离散元法分析模型建模软件

付宏^a|吕游^a|徐静^a|黄山^a|于建群^b

(吉林大学 a.计算机科学与技术学院|长春 130012；b.生物与农业工程学院|长春 130025)

收稿日期:2011-10-10 出版日期:2012-01-29 发布日期:2012-03-20
作者简介:付宏（1960—）|女|浙江宁波人|吉林大学教授|硕士生导师|主要从事数值模拟与仿真研究和软件工程|（Tel）86-13086875669（E-mail）fuhong@jlu.edu.cn;通讯作者：于建群（1958—）|男|长春人|吉林大学教授|博士生导师|主要从事数字化设计研究|（Tel）86-13074320858（E-mail）yujiangqun@jlu.edu.cn。
基金资助:
国家自然科学基金资助项目(60973090，51175219，11172112);吉林省科技发展计划基金资助项目（20100313）

Development of Software for Establishing Analytical Model of Irregular Surfaces in Discrete Element Method

FU Hong^a|LVYou^a,XU Jing^a|HUANG Shan^a|YU Jian-qun^b

(a.College of Computer Science and Technology,Jilin University,Changchun 130012,China；b.School of Biological and Agricultural Engineering,Jilin University,Changchun 130025,China)

Received:2011-10-10 Online:2012-01-29 Published:2012-03-20

摘要/Abstract

摘要：

在采用离散元法分析机械部件与颗粒材料接触作用时，需要建立机械部件（边界）的离散元法分析模型。分析可知，机械部件中与颗粒材料接触作用的零件表面，存在不能用初等解析函数表达的非规则曲面。为此，采用推进波前法（AFT：Advancing Front Technique）进行非规则曲面网格划分，把非规则曲面离散成三角形平面片的组合，同时添加运动属
性和材料特性参数，由此建立非规则曲面边界的离散元法分析模型。在对PRO/E软件进行二次开发的基础上，研制了非规则曲面边界建模软件。通过实例验证，初步证明了基于AFT边界建模方法和软件的可行性，为复杂结构机械部件工作过程的仿真分析奠定了基础。

关键词: 离散元法, 边界建模, 非规则曲面, 推进波前法

Abstract:

It needs to establish analysis models of machine parts (boundaries),when use DEM(Discrete Element Method) to analyze the contact action between machine parts and granular materials.There exist irregular surfaces which can not be expressed by the elementary analytic function in the parts’ surfaces which contact with granular materials.The AFT(Advancing Front Technique) was used to mesh and discrete irregular surfaces into the triangle planar units,parameters of movement characters and material properties were added in the same time,so the DEM analysis models of irregular surfaces was created.Based on the redevelopment of PRO/E software,the boundary modeling software of irregular surfaces was developed.By application examples,the feasibility of boundary modeling method and the software which based on the AFT was validated,which lays foundations for simulation and analysis of working process for machine parts with complex structure.

Key words: discrete element method, boundary modeling, irregular surfaces, advancing front technique

中图分类号:

TP391.72

付宏, 吕游, 徐静, 黄山, 于建群. 非规则曲面的离散元法分析模型建模软件[J]. J4, 2012, 30(1): 23-29.

FU Hong, LV Liu, XU Jing, HUANG Shan, XU Jian-Qun. Development of Software for Establishing Analytical Model of Irregular Surfaces in Discrete Element Method[J]. J4, 2012, 30(1): 23-29.