多向载荷下PVC双轴向经编织物有限元分析  

Finite element analysis of PVC coated biaxial warp knitted fabric under multiaxial loads

作　　者：罗以喜[1] 朱昊[1] 

机构地区：[1]绍兴文理学院纺织服装学院,绍兴浙江312000

出　　处：《纺织学报》2009年第12期50-54,共5页Journal of Textile Research

基　　金：欧亚联盟项目(IN/ASIALINK/002(82158))

摘　　要：为更好地了解PVC涂层双轴向经编织物在多轴向拉伸载荷下开缝撕裂的受力情况,为材料性能评价及预测提供理论依据,利用有限元方法对PVC涂层双轴向经编织物在多轴向拉伸载荷下的开缝撕裂进行受力分析与计算,特别对不同初始开缝长度及角度的撕裂进行计算模拟,得到模型各节点的应力值以及受力云图。结果表明:随着初始开缝长度的增加,开缝两端受到的最大等效应力值增大;无论开缝初始角度是多少,开缝的两端存在应力集中。这些规律与试样实际试验结果相吻合。For better understanding the force being exerted during the precracked tearing process of PVC coated biaxial warp knitted fabric under muhiaxial loads and providing a theoretical reference for assessing and predicting the property of composites, finite element analysis method was used to analyze and compute the force being exerted during the precracked tearing process of PVC coated biaxial warp knitted fabrics under muhiaxial tensile loads, in particular to simulate and compute the stress resulting from the initial precracked tears with different lengths, and the stress value and contour plots of the model were obtained. The results show that the maximal equivalent stress increases with the increase of initial crack length. Whatever the initial crack orientation is, the stress concentration is shown at the crack tips. It is found that these laws are in good agreement with those derived from experimental values of specimens.

关 键 词：双轴向经编 多向拉伸载荷 开缝撕裂 有限元分析 

分 类 号：TS184.4[轻工技术与工程—纺织材料与纺织品设计]