复合材料科学与工程Issue(8)：43-53,11.DOI:10.19936/j.cnki.2096-8000.20250828.006
PVDF膜材裂缝扩展演化过程试验与数值模拟研究
Experimental and numerical simulation of crack propagation evolution of PVDF membrane
摘要
Abstract
The tearing resistance is very important to the safety of the membrane structure.In the present paper,uniaxial tensile test and numerical simulation were carried out to study the tearing behavior of PVDF membrane with initial slit.The numerical model of yarn and matrix microstructure was established using ANSYS LS-DYNA soft-ware,and the tearing process of membrane was analyzed under different slit angles and positions.The tearing strength and failure mode characteristics of the film were obtained,and the effects of different slit angles on the tear-ing properties of the textile were discussed.The results show that according to the different angle of slit,the section shaped like"a straight line""Z"and"√"can be formed;under tearing test and numerical simulation,the slit expansion process of the film are identical,and the matrix breaks before the yarn.The error of the numerical simula-tion is less than 10%at different angles,which indicates that the finite element method can predict the tearing strength of the film well.关键词
聚偏二氟乙烯膜/裂缝扩展/单轴拉伸试验/显式有限元分析/复合材料Key words
polyvinylidene fluoride membrane/crack propagation/uniaxial tensile test/explicit finite element analysis/composites分类
通用工业技术引用本文复制引用
李雯芮,刘平,尹灵芳..PVDF膜材裂缝扩展演化过程试验与数值模拟研究[J].复合材料科学与工程,2025,(8):43-53,11.基金项目
江苏省研究生科研与实践创新计划项目(SJCX24_2559) （SJCX24_2559）
