一般各向异性复合材料层板基体损伤性能衰减研究(Ⅰ)——分解刚度法建立(θm/90n)s开裂层板本构关系*

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一般各向异性复合材料层板基体损伤性能衰减研究(Ⅰ)——分解刚度法建立(θ_m/90_n)_s开裂层板本构关系^*

1.
Hebei Institute of Technology, Tangshan, Hebei 063009, P. R. China;
2.
Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China

摘要: 本文尝试将损伤复合材料层板性能衰减研究扩展到含一般各向异性铺层的基体开裂层板.在第一部分中,采用分解刚度法处理法向与剪切响应的耦合问题,对承受面内载荷的对称约束开裂(θ_m/90_n)_s层板,导出本构关系的近似解析解,将层板有效刚度表为裂纹密度的函数.
- 复合材料层板 /
- 一般各向异性 /
- 损伤 /
- 本构关系 /
- 分解刚度
Abstract: The study on property degradation of damaged composite laminates is extended to anisotropic laminates with matrix cracking.In(Ⅰ)of the paper,an idea of "stiffness patition" is proposed to deal with the puzzle that the in-plane normal response is coupled with the shear response of the laminates.For(θ_m/90_n)_s laminates containing transversely cracked layers under general in-plane loading,the constitutive relations are derived and the effective stiffnesses are expressed as the function of crack density.
- composite laminate /
- anisotropy /
- damage /
- constitutive relation /
- stiffness partition

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