东南大学学报（自然科学版）2017，Vol.47Issue(6)：1195-1200,6.DOI:10.3969/j.issn.1001-0505.2017.06.018
PVDF涂层织物拉伸力学性能试验研究
Experimental study on mechanical properties of PVDF textile
摘要
Abstract
To obtain the constitutive model of membrane,the uniaxial tensile failure experiments of SH-1050P textile were carried out using the angle of yam and tensile direction as the parameters.Besides,the biaxial tensile test under biaxial loading with multiple loading ratio was also conducted to obtain the complete uniaxial/biaxial test data.The analytical formula about the relationship between the elastic modulus and the angle was derived based on the assumption that the strains of all the membranes are uniform and there is no slippage between ply and yam,which can explain the experimental phenomena well.Meanwhile,the biaxial elastic modulus and Poisson's ratio under different proportional loading were obtained with the assumption of the membrane being a biaxial orthogonal elastic model under biaxial loading.The results show that the elastic modulus of the uniaxial test can be divided into the elasticity and plasticity stages according to the ultimate elastic strain of 2％.Both two elastic modulus values are proportional to 2 times of angle.As for the bi-axial test,the elastic modulus is the same as that of the uniaxial test when the loading ratio is 1 ∶ 1,and the discreteness of elastic modulus increases with the discreteness of the loading ratio.关键词
膜材/双轴试验/力学性能/正交各向异性Key words
membrane/bi-axial test/mechanical property/orthotropic分类
建筑与水利引用本文复制引用
刘平,吴刚,唐柏鉴,周道传,缪玮..PVDF涂层织物拉伸力学性能试验研究[J].东南大学学报（自然科学版）,2017,47(6):1195-1200,6.基金项目
国家自然科学基金资助项目(51508238)、江苏省博士后科研基金资助项目(1601014B). （51508238）
