기계적 체결부에 존재하는 타원형 표면균열에 대한 가중함수법의 적용

Application of Weight Function Method to Elliptical Surface Cracks in Mechanical Joints

The weight function method is an efficient technique to calculate the stress intensity factors for various loading conditions in that only the stress analysis of an uncracked model is required. This paper analyzes the mixed-mode stress intensity factors of surface and deepest points for quarter elliptical surface cracks in mechanical joints by weight function method and the coefficients included in weight function are determined by finite element analyses for reference loadings. Results for the different number of terms in weight function are presented.