Applied Mathematics and Mechanics (English Edition) ›› 1998, Vol. 19 ›› Issue (3): 279-287.

• Articles • Previous Articles     Next Articles

PROPERTY DEGRADATION OF ANISOTROPIC COMPOSITE LAMINATES WITH MATRIX CRACKING (I)-CONSTITUTIVE RELATION DEVELOPING FOR (θm/90n) CRACKED LAMINATES BY STIFFNESS PARTITION

Hua Yu1, Wang Xingguo1, Li Zhengneng2   

  1. 1. Hebei Institute of Technology, Tangshan 063009, P. R. China;
    2. Peking University of Aeronautics and Astronautics, Beding 100083, P. R. China
  • Received:1995-12-29 Revised:1997-12-15 Online:1998-03-18 Published:1998-03-18

Abstract: The study on property degradation of damaged composite laminates is extendedto anisotropic laminates with matrix cracking. In (I) of the paper, an idea of "stiffnesspatition" is proposed to deal with the puzzle that the in-plane normal response iscoupled with the shear response of the laminates. For (θm/90n.), laminates containingtransversely cracked layers under general in-plane loading, the constitutive relationsare derived and the effective stiffnesses are expressed as the function of crack density.

Key words: composite laminate, anisotropy, damage, constitutive relation, stiffness partition

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