On the structural behavior of ship's shell structures due to impact loading

International Journal of Naval Architecture and Ocean Engineering

Hyung Kyun Lim¹  Joo-Sung Lee² 

[1] Hyundai Mipo Dockyard Co., Ltd., Ulsan, Republic of Korea;School of Naval Architecture and Ocean Engineering, University of Ulsan, Ulsan, Republic of Korea;

关键词: Shell structure;    Line heating;    Impact loads;    Fracture;    Cowper–Symonds model;   

DOI  :  10.1016/j.ijnaoe.2017.03.002

来源: DOAJ

【 摘 要 】

When collision accident between ships or between ship and offshore platform occurs, a common phenomenon that occurs in structures is the plastic deformation accompanied by a large strain such as fracture. In this study, for the rational design against accidental limit state, the plastic material constants of steel plate which is heated by line heating and steel plate formed by cold bending procedure have been defined through the numerical simulation for the high speed tension test. The usefulness of the material constants included in Cowper–Symonds model and Johnson–Cook model and the assumption that strain rate can be neglected when strain rate is less than the intermediate speed are verified through free drop test as well as comparing with numerical results in several references. This paper ends with describing the future study.

【 授权许可】

Unknown