선박 및 해양구조물의 셸 요소 기반 연성 파단 예측 제1편: 이론적 배경 및 연구 수준 리뷰

Abstract

The fracture model of ductile steels is dependent on the stress state, which can be defined using two non-dimensional parameters: stress triaxiality and Lode angle. Past presented ductile fracture model shows good accuracy in ductile fracture initiation where the fully three-dimensional mechanical fields. In this study, the global study trends are investigated for ductile fracture using stress triaxiality and lode angle, with briefly introducing theoretical background and introduced the concept of the Domain of Shell-to-Solid Equivalence (DSSE) for capture the onset of localized necking with shell element meshes. The stress versus strain data are presented as the results of these tests and will be used for theverification of numerical simulations and fracture identifications in Part II.