THERMAL-STRESS ANALYSIS OF A SUBSURFACE INCLINED CRACK SUBJECTED TO APOINT HEAT-SOURCE

The thermoelastic response of a subsurface inclined crack under the ap plication of a point heat source is studied in this paper Based on the complex variable theory and the method of analytical continuation, th e problem is formulated by two stress functions and a temperature func tion which are enforced to satisfy the interface condition. The singul ar integral equations for both the temperature field and thermoelastic field are derived by taking dislocation functions along the crack bor der such that both the insulated condition and traction-free condition are satisfied on the crack surface. Numerical results of the thermal stress intensity factors for different geometric configurations are di scussed in detail and provided in graphical form. The results obtained in this study will be helpful in understanding the problems of seismo logy generated by thermal loading in a cracked body.