复合材料科学与工程Issue(5)：5-11,18,8.DOI:10.19936/j.cnki.2096-8000.20240528.001
基于非线性本构的织物膜材梯形撕裂数值分析
Numerical analysis on trapezoidal tearing of fabric membrane based on a nonlinear constitutive model
摘要
Abstract
In order to improve the accuracy of the numerical analysis for the tearing mechanical response of fab-ric composites,a nonlinear damage constitutive model for PVDF-coated fabric was developed based on the continu-ous damage mechanics theory.The accuracy of the nonlinear constitutive model is verified by combining the off-axis tensile test with a gradient of 15°.The nonlinear constitutive model was added to the numerical analysis.The results were compared with the conventional folding line model and the trapezoidal tearing test with a gradient of 15°to ver-ify the accuracy of the nonlinear constitutive model in terms of tearing mechanical response.The results show that the nonlinear constitutive model can effectively track the actual stress-strain curve of the fabric.In terms of tearing mechanical response,both models can reflect the effect of series parameter changes on tearing performance and the corresponding tearing mechanism.But the numerical results of the nonlinear constitutive model have a better repre-sentation of the complex stresses of tensile-shear coupling during the tearing process.关键词
经编织物/非线性/梯形撕裂/撕裂强度/偏轴角度/复合材料Key words
warp-knitted fabric/nonlinearity/trapezoidal tearing/tearing strength/off-axis angles/composites分类
通用工业技术引用本文复制引用
马俊杰,陈建稳..基于非线性本构的织物膜材梯形撕裂数值分析[J].复合材料科学与工程,2024,(5):5-11,18,8.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资助(30920021143) （30920021143）
中国博士后科学基金资助项目(2017T100371) （2017T100371）
