Fracture Analyses for Interface Corners in Elastic Materials Subjected to Thermal Loading

Abstract:

By employing the Stroh formalism for two-dimensional anisotropic thermoelasticity, fracture analyses of interface corners between two dissimilar anisotropic elastic materials under thermal loadings are considered in this paper. It was proved that the consideration of thermal effects will not influence the stress singularity but will induce heat flux singularity if the singularity of the temperature field is not permissible. To calculate the stress intensity factors via path independent H-integral, it was found that the one proposed previously for the mechanical loading conditions should be modified by adding an additional surface integral accounting for the thermal effects. Two examples considering cracks and corners in isotropic plates are presented to show the correctness and validity of the modified H-integral.

• Periodical: Key Engineering Materials (Volumes 462-463)
• Pages: 277-283
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.462-463.277
• Online since: January 2011
• Authors: Chyan Bin Hwu, Tai Liang Kuo, Chun Chih Huang
• Keywords: Interface Corner, Order of Stress Singularity, Stress Intensity Factor (SIF), Stroh Formalism, Thermo Elasticity

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