Volume 24 Issue 5
May  1998
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Xu Chengdong, Hua Yu, Li Zhengneng, et al. Effect of Material Nonlinearity on Progerssive Damage of Laminated Composites[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 546-548. (in Chinese)
Citation: Xu Chengdong, Hua Yu, Li Zhengneng, et al. Effect of Material Nonlinearity on Progerssive Damage of Laminated Composites[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 546-548. (in Chinese)

Effect of Material Nonlinearity on Progerssive Damage of Laminated Composites

  • Received Date: 09 Jun 1997
  • Publish Date: 31 May 1998
  • A nonlinear finite element program in terms of the nonlinear shear stress-shear strain relation proposed by Hahn and Tsai is used to simulate the progressive damage of laminated composites with a circulor hole subjected to remote tensile loading.Stress,strain and ultimate strength of laminates are analyzed by this program.Compared with the experimental data in earlier paper,the nonlinear approch is more accurate than the linear approach,especially for orthotropic laminate.The parametric study manifests that the variance of nonlinearity coefficient has more serious effect on orthotropic plate than on quasi-isotropic plate.

     

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  • 1. Hahn H T,Tsai S W.Nonlinear behaviour of composite materials. J Composite Materal,1973,7:102~118 2. 华 玉.损伤复合材料层合板本构关系研究与破坏过程模拟:[学位论文].北京:北京航空航天大学飞行器设计与应用力学系,1994 3. Tan S C.A progressive failure model for composite laminates containing openings. J Composite Materal,1991,25:556~577 4. Chang K Y,Liu S,Chang F K.Damage tolerance of laminated composites containing an open hole and subjected to tensile loadings.J Composite Materal,1991,25:274~301
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