Constitutive Relation and Stiffness Degradation of Cracked Anisotropic Composite Laminates(Ⅱ)——Determination of Resolved Stiffness and Investigation of Stiffness Degradation for Cracked Laminates

Wang Xingguo; Hua Yu; Li Zhengneng

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Article Navigation > Applied Mathematics and Mechanics > 1998 > 19(6): 520-527

Wang Xingguo, Hua Yu, Li Zhengneng. Constitutive Relation and Stiffness Degradation of Cracked Anisotropic Composite Laminates(Ⅱ)——Determination of Resolved Stiffness and Investigation of Stiffness Degradation for Cracked Laminates[J]. Applied Mathematics and Mechanics, 1998, 19(6): 520-527.

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Constitutive Relation and Stiffness Degradation of Cracked Anisotropic Composite Laminates(Ⅱ)——Determination of Resolved Stiffness and Investigation of Stiffness Degradation for Cracked Laminates

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

Received Date: 1995-12-09
Rev Recd Date: 1997-12-19
Publish Date: 1998-06-15

Abstract

Abstract

The study on property degradation of damaged composite laminates is extended to anisotropic laminates with matrix cracking. In(Ⅱ) of the paper, a solution for partitioned stiffness is given to complete the constitutive relations developed in(Ⅰ). The stiffness degradation in(θ_m/90_n)_s cracked laminates is calculated and the results are discussed.
- composite laminate,
- anisotropy,
- damage,
- stiffness partition,
- property degradation

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References(3)

References

[1]	R.J.Nuismer and S.C.Tan,Constitutive relations of a cracked composite lamina,J.Comp.Mater.,22(4)(1988),306-321.
[2]	R.Talreja,Yalvac Selim,et al.,Transverse cracking and stiffness reduction in crossply laminates of different matrix toughness,J.Comp.Mater.,26(11)(1992),1644-1663.
[3]	华玉、王兴国、郦正能,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,应用数学和力学,19(3)(1998),257-265.