PVDF/PES涂层织物循环拉伸力学性能及弹性模量  

Mechanical Properties and Elastic Moduli of PVDF/PES Coated Fabrics Under Cyclic Tension

作　　者：陈建稳[1] 陈务军[1] 张大旭[1] 

机构地区：[1]上海交通大学空间结构研究中心,上海200030

出　　处：《华南理工大学学报（自然科学版）》2013年第6期69-76,共8页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51278299)

摘　　要：以Ferrari1302膜材为对象开展试验,首先进行了单轴循环拉伸试验,然后采用自主研发的多功能薄膜双轴拉伸试验机进行多比例加载下的双轴拉伸试验,得到完整的单双轴循环试验结果.探讨了单双轴循环试验的应力应变关系及弹性模量随循环次数的变化,提出并推导了双轴耦合弹性模量的理论公式,分析了应力比对双轴耦合弹性模量的影响.研究结果与分析方法可为复杂膜结构的设计、分析及裁剪提供参考.In this paper,first,the uniaxial cyclic tensile tests of coated fabric Ferrari1302 were conducted,and a series of biaxial tensile tests with different load ratios were carried out on a self-developed multi-function biaxial tensile tester,with detailed uniaxial and biaxial cyclic tension results being obtained.Then,the stress-strain relationship and elastic moduli of the membrane material at different cycle numbers were discussed according to the test results.Moreover,the theoretical formulas of biaxial coupling elastic modulus were deducted,and the influence of stress ratio on the coupling elastic modulus was discussed.The presented work and procedure provide references for the practical design,analysis and pattern cutting of membrane structures.

关 键 词：膜材 双轴试验 力学性能 应力应变关系 弹性模量 循环荷载 

分 类 号：TU599[建筑科学—建筑技术科学]