摘要
根据ABAQUS显式用户材料子程序VUMAT模块,提出了一个基于CF-DSGZ粘弹性本构理论及弹性预测—塑性校正算法、专用于模内装饰技术(IMD)热压成型数值分析的材料子程序。研究了子程序的数值计算原理及过程。以某IMD材料为例,通过将子程序嵌入ABAQUS软件,对试样进行高温单向拉伸数值模拟,并对比模拟结果与试验效果,验证子程序的准确性。
A material subroutine for numerically analyzing the thermoforming process of IMD was proposed according to the VUMAT module of ABAQUS/ExpUcit user material sub- routine and based on CF-DSGZ viscoelastic constitutive theory and elastic prediction-plas- tic correction algorithm. The fundamental principle, program modules and program flow chart of the subroutine were studied. A numerical simulation on the uniaxial tension of sample material was carried out at high temperature and a comparison was made to vali- date the subroutine.
出处
《模具工业》
2012年第9期8-12,共5页
Die & Mould Industry
基金
广东高校优秀青年创新人才培养计划项目资助(LY-M10021)
关键词
模内装饰技术
聚合物
热压成型
材料子程序
in-mould decoration （IMD）
polymer
thermoforming
material subroutine
