复合材料科学与工程Issue(4)：5-13,39,10.DOI:10.19936/j.cnki.2096-8000.20240428.001
PVDF膜材双轴全域拉伸非线性及力学参数研究
Study on biaxial full-stress tensile nonlinear behavior and mechanical parameters of PVDF membrane material
摘要
Abstract
To define the biaxial tensile properties of fabric membrane material within the full-stress range,the biaxial monotonic tensile experiments of typical PVDF coated fabric were conducted by setting seven loading ratios.A developed MATLAB program was used to achieve complex deformation properties and accurate elastic parameters of the coated fabric.By this program,the response surface analysis of deformation and mechanical parameters were carried out to reveal the variation and evolution in elasticity modulus,Poisson's ratio,and orthotropy of the coated fabric under different stress levels and ratios.The results show that elastic parameters and orthotropic characteristics of the material vary noteworthily with stress ratios and levels within the full-stress range.In addition,coupled stiff-ness coefficient was introduced to represent the proportion of elongation and shrinkage in biaxial monotonic tensile test.The formula of elasticity modulus was derived based on the uniaxial and biaxial tensile stress-strain relation,and the obtained values were in good agreement with the experiment values.The conclusions of investigation could offer beneficial reference for tensile mechanical property of coated fabrics and membrane failure analysis in mem-brane structure engineering.关键词
平纹织物膜材/响应面/双轴单调拉伸/弹性参数/全域应力范围/复合材料Key words
plain woven fabrics/response surface/biaxial monotonic tensile/elastic parameters/full-stress range/composites分类
通用工业技术引用本文复制引用
张燚聪,陈建稳..PVDF膜材双轴全域拉伸非线性及力学参数研究[J].复合材料科学与工程,2024,(4):5-13,39,10.基金项目
国家自然科学基金项目(51608270) （51608270）
江苏省基础研究计划(自然科学基金)资助项目(BK20191290) （自然科学基金）
中央高校基本科研业务费专项资金(30920021143) （30920021143）
中国博士后科学基金资助项目(2017T100371,2016M601816) （2017T100371,2016M601816）
