摘要
利用基于连续介质力学的有限元法对机织复合材料织物的冲压过程进行了模拟仿真。一个非正交本构模型被用来描述机织复合材料在大变形下由于经纱和纬纱之间角度变化所引起的非线性各向异性材料行为。利用双球形基准冲压模拟装置对平纹机织复合材料进行常温下的冲压成形模拟仿真,编写了ABAQUS/Standard中的用户材料子程序来描述机织复合材料的材料属性。模拟结果与实验结果对比表明,机织复合材料冲压成形模拟分析结果与实验结果具有良好的一致性。
The paper presented a fully continuum mechanics-based approach for stamping simulation of textile fiber reinforced composites by using finite element（FE） method.A non-orthogonal constitutive model was used to represent the anisotropic mechanical behavior of textile composites under large shear deformation during stamping.Simulation was performed on a balanced plain weave composite over a benchmark double dome device.A user material subroutine UMAT for the woven composite was developed for commercial FE package ABAQUS/Standard to implement the algorithm.The main advantage of this approach lies in its ease execution whilst computationally effective.Simulation results show good agreement with experimental output in terms of a number of parameters selected for comparison.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2011年第6期728-731,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50975236)
西北工业大学基础研究基金资助项目(W018103)
关键词
机织复合材料
有限元分析
成形模拟
双球型模具
非正交本构模型
textile composite
finite element analysis
forming simulation
double dome
non-orthogonal constitutive model
