국부손상의 모델링과 규명을 위한 연속체 손상역학이론

초록

This paper considers a smeared continuum damage mechanics based on equivalent elliptical crack representation of a local damage. This strain energy equivalence principle is used to derive the effective continuum elastic properties of a damaged solid in terms of the undamaged elastic properties and a scalar damage variable. The scalar damage variable is used to develop a consistent damage evolution equation. The combination of representing local damage as equivalent elliptical crack, the determination of effective elastic properties using a strain energy equivalence principle, and a consistent damage evolution equation yields a simple, yet powerful local approach for continuum damage modeling, analysis, and identification