基于MSC．Marc接口的机织物悬垂屈曲数值模拟  

Numerical Simulation of Draping and Buckling of Woven Fabric Based on MSC.Marc Interface

作　　者：李翠玉[1] 张义同[2] 张小涛[3] 

机构地区：[1]天津工业大学纺织学院,天津300160 [2]天津大学机械工程学院,天津300072 [3]天津大学管理学院,天津300072

出　　处：《机械工程学报》2008年第4期165-170,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金(10272079);国家自然科学基金和英国皇家学会中英合作及天津市科委应用基础研究重点(06YFJZJC14800)资助项目

摘　　要：利用MSC.Marc软件良好的开放性语言接口,引入机织物的细观力学本构模型,建立完整的适合进行机织物悬垂屈曲模拟的数值分析方法模型,模拟机织物在自重作用下的悬垂及屈曲。与目前研究者将机织物看作是正交异性的连续体不同,该本构模型能更好地描述机织物由其特有细观机织结构所具有的某些力学性质。应用该本构模型,采用大变形曲壳单元,对机织物的悬垂屈曲进行数值模拟,分析机织物面内的压缩模量在屈曲分析中的重要作用,并给出机织物变形的动态过程模拟。试验结果表明,采用该本构模型显著提高了机织物悬垂屈曲的数值模拟精度。研究成果为服装CAD中'试衣系统'的研制提供了理论和技术基础。The micro-mechanical constitutive model is introduced to develop an integrated numerical analyzing model based on excellent exoteric language interface of MSC. Marc program under gravity load qualified to simulate draping and buckling of woven fabric. The micro-mechanical constitutive model reveals mechanical properties of woven fabric owing to its micro-woven structure more elaborately than orthotropic continuum model that present researchers do. The draping and buckling of woven fabric are simulated with the large deformation curved shell element based on the micro-constitutive model of woven fabric. The important effect of compress module on the buckling analysis and simulation of dynamic deformation process is analyzed. The results show that precision of the draping and buckling simulation is improved evidently because of the micro-constitutive model. The investigation sets up the theory and technique basis for the fitting system in the dress CAD.

关 键 词：MSC.Marc机织物 细观力学本构模型 悬垂 屈曲 数值模拟 

分 类 号：O242.21[理学—计算数学]