Damage Theoretical Analysis of 2.5D C/SiC Composites under Tensile and Shear Loading

Abstract:

An anisotropic damage constitutive model is developed to describe the damage behavior of C/SiC composites. Different kinematic and isotropic hardening functions were employed in damage yield function to describe accurately the damage nonlinear hardening. The damage variable is defined by the principle of energy equivalence. The degradation of stiffness and the unrecoverable deformation induced by micro-crack propagation were considered in this model. The constants of constitutive model are identified and the damage evolution processes under tensile and shear loading. Uniaxial tension and shear tests have been used to valid the constitutive model to C/SiC composites.

• Periodical: Advanced Materials Research (Volumes 150-151)
• Pages: 330-333
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.150-151.330
• Online since: October 2010
• Authors: Yan Jun Chang, Ke Shi Zhang, Gui Qiong Jiao, Jian Yun Chen
• Keywords: Anisotropic Damage, C/SiC Composite, Constitutive Model, Damage Unrecoverable Strain, Hardening

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