有限元分析法研究Kevlar129纱线及织物的拉伸性能  

Study on Tensile Property of Kevlar129 Yarn and Fabric with Finite Element Analysis Method

作　　者：程建芳[1] 肖露[1] 柴晓明[1] 周纪明[2] 陈建勇[1] 张华鹏[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]东华大学纺织学院,上海210620

出　　处：《浙江理工大学学报（自然科学版）》2013年第5期649-653,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(51073141)

摘　　要：在对Kevlar129纱线拉伸力学性能测试和建立反映纱线屈曲的纱线有限元模型的基础上,在纱线结构层次上建立织物的有限元分析模型,采用带有主应力断裂失效准则的弹性正交各向异性材料模型,对比分析了织物的拉伸力学性质,得到了预测织物拉伸力学性质的有限元分析方法,并对纱线和织物拉伸断裂过程进行了分析。Kevlar织物拉伸性能的有限元分析和实验结果相比,初始拉伸阶段应力较低,拉伸断裂前应力稍高,总体吻合程度较好,对断裂点附近的力学性能预测仍有待于进一步提高。This research establishes finite element analysis model of fabric at the level ot yarn structure on the basis of tensile mechanical property test of Kevlar129 yarn and the establishment of finite element yarn model reflecting yarn flexiom uses elastic orthotropic material models with principal stress fracture failure criteriom makes a contrastive analysis on tensile mechanical property of fabric and obtains the finite element analysis method for predicting the tensile mechanical property of fabric~ analyzes the tensile failure process of yarn and fabric. In the comparison between the finite element analysis of tensile property of Kevlar fabric and experimental result, the stress is low in the initial tensile stage and the stress is higher before tensile failure; the overall matching degree is good and the prediction on mechanical property near the breaking point is to be further improved.

关 键 词：Kevlar129 拉伸性能 有限元分析 正交各向异性 

分 类 号：O316[理学—一般力学与力学基础]