Applied Mathematics and Mechanics (English Edition) ›› 1993, Vol. 14 ›› Issue (1): 85-94.

• 论文 • 上一篇    下一篇

THE STRAIN ENERGY DENSITY RATIO CRITERION FOR PREDICTING CRACKING DIRECTION IN COMPOSITE MATERIALS

张双寅, 蔡良武   

  1. Institute of Mechanics, Chinese Academy of Sciences, Beijing
  • 收稿日期:1989-11-06 出版日期:1993-01-18 发布日期:1993-01-18
  • 通讯作者: Chien Wei-zang
  • 基金资助:
    Supported by the Chinese Academy of Sciences under a special grant

THE STRAIN ENERGY DENSITY RATIO CRITERION FOR PREDICTING CRACKING DIRECTION IN COMPOSITE MATERIALS

Zhang Shuang-yin, Cai Liang-wu   

  1. Institute of Mechanics, Chinese Academy of Sciences, Beijing
  • Received:1989-11-06 Online:1993-01-18 Published:1993-01-18
  • Supported by:
    Supported by the Chinese Academy of Sciences under a special grant

摘要: The strain energy density ratio criterion for predicting cracking direction in composite materials is proposed. The Tsai-Hill criterion and Norris criterion of composite materials are extended to predict the cracking direction in composites. The three criteria are used to analyse the crack propagation problem of the unidirectional fibre composite sheet with various fibre directions. The predicted results are compared with those of the existing normal stress ratio criterion and strain energy density criterion.

关键词: composite maierials, cracking direction, unisotropy. lincur clustic fracture mechanics

Abstract: The strain energy density ratio criterion for predicting cracking direction in composite materials is proposed. The Tsai-Hill criterion and Norris criterion of composite materials are extended to predict the cracking direction in composites. The three criteria are used to analyse the crack propagation problem of the unidirectional fibre composite sheet with various fibre directions. The predicted results are compared with those of the existing normal stress ratio criterion and strain energy density criterion.

Key words: composite maierials, cracking direction, unisotropy. lincur clustic fracture mechanics

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