三维编织复合材料渐进损伤及拉伸强度数值预测

中国机械工程 ›› 2014, Vol. 25 ›› Issue (3): 321-326.

三维编织复合材料渐进损伤及拉伸强度数值预测

张芳芳;刘才

燕山大学国家冷轧板带装备及工艺工程技术研究中心，秦皇岛，066004

出版日期:2014-02-10 发布日期:2014-02-07
基金资助:
河北省自然科学基金资助项目(E2010001225)；河北省回国留学人员基金资助项目(20100707)

Numerical Prediction of Progressive Damage and Tension Strength of 3D Braided Composites

Zhang Fangfang;Liu Cai

National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao, Hebei, 0660041

Online:2014-02-10 Published:2014-02-07
Supported by:
Hebei Provincial Natural Science Foundation of China（No. E2010001225）;Hebei Provincial Foundation for Returned Overseas Chinese Scholars （No. 20100707）

摘要/Abstract

摘要：

基于区域叠合技术和与材料断裂能相关的损伤演化模型对三维四向编织复合材料的渐进损伤演变过程及拉伸强度进行数值预测。结合基于Fortran语言编写的单胞增强相网格提取算法，实现了参数化单胞增强相网格模型的快速建立。基于Murakami损伤理论建立了正交各向异性损伤本构模型，利用等价位移控制相应模式下损伤的演变发展，分别模拟了典型大小编织角三维四向编织复合材料的细观损伤起始、扩展和最终失效过程。数值预测结果与实验结果吻合较好。

关键词: 区域叠合技术, 渐进损伤, 数值模拟, 三维编织复合材料

Abstract:

The progressive damage evolution and tensile strength of 3D four-directional braided composites were predicted combination DST with damage evolution model based on fracture energy. The parametric unit cell model of braided composites was created via element trimming method which written in Fortran language. An anisotropic damage model was built based on Murakami damage theory. The evolvement of damage model was controlled by equivalent displacements. The whole process of damage initiation, propagation and catastrophic failure of 3D four-directional braided composites with typical small braiding angle and large braiding angle were simulated in detail. The predicted numerical results correlate well with the experimental ones presented in the published literature.

Key words: domain superposition technique(DST), progressive damage, numerical simulation, 3D braided composite

中图分类号:

TB332

张芳芳, 刘才. 三维编织复合材料渐进损伤及拉伸强度数值预测[J]. 中国机械工程, 2014, 25(3): 321-326.

Zhang Fangfang, Liu Cai. Numerical Prediction of Progressive Damage and Tension Strength of 3D Braided Composites[J]. China Mechanical Engineering, 2014, 25(3): 321-326.

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