轻工机械2024，Vol.42Issue(4)：16-24,35,10.DOI:10.3969/j.issn.1005-2895.2024.04.003
基于MMF理论的平纹织物复合材料细观强度性能研究
Research on Microscale Strengths for Plain-Woven Fabric Composites Based on MMF Theory
摘要
Abstract
In order to investigate the constituents' microscale strengths of the plain-woven fabric composites,the multi-scale method was proposed to determine the microscale strength of plain woven fabric composites baseed on micromechanics of failure.The finite element model of microscale representative unit cell(RUC)of the unidirectional composites and fiber buddles of the plain-woven fabric composites was established,and macro-meso stress transformation method was introduced based on the RUC.The microscale strengths of the constituents in the unidirectional composites were achieved based on the tested macroscale strengths.Under the microscale strength invariance hypothesis,the strengths of the fiber buddles from the plain-woven fabric composites were back-calculated based on the microscale strength of the unidirectional composites,and the strengths of the fiber buddles from backward calculation were verified and corrected based on the tested strengths of the plain-woven fabric laminates.With the microscale RUC model and strengths of the fiber buddles,the microscale strengths of the constituents suitable for fiber and matrix components of the plain-woven fabric composites were determined.For the T300/Epoxy composite,the above methods have been applied to determine the microscale strengths of the constituents of plain-woven fabric.The results show that the proposed analysis method and calculation results are in good agreement with the experimental results and can be applied to the practical engineering composite materials.关键词
复合材料/平纹织物/细观力学失效/细观强度/跨尺度方法Key words
composite/plain-woven fabric/MMF(micro-mechanics of failure)/microscale strength/multi-scale method分类
机械制造引用本文复制引用
高安..基于MMF理论的平纹织物复合材料细观强度性能研究[J].轻工机械,2024,42(4):16-24,35,10.基金项目
安阳市重大科技专项(2022A02GX002). （2022A02GX002）
