【作者】 赵百惠； 胡志强； 陈刚；

【Author】 ZHAO Bai-hui;HU Zhi-qiang;CHEN Gang;State Key Laboratory of Marine Engineering,Shanghai Jiao Tong University;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration;School of Marine Science and Technology,Newcastle University;Marine Design & Research Institute of China;

【机构】 上海交通大学海洋工程国家重点实验室； 高新船舶与深海开发装备协同创新中心上海交通大学； 英国纽卡斯尔大学海洋科学与技术学院； 中国船舶及海洋工程设计研究院；

【摘要】 在船舶碰撞与搁浅场景的有限元模拟中,如何合理定义钢板材料的断裂失效是一个越来越重要的问题。本文利用LS-DYNA程序提供的材料二次开发功能,将基于BWH失效准则理论假设推导出的材料失效准则进行编程,并嵌入LS-DYNA程序中。之后,利用更新的LS-DYNA程序,以一组船舶搁浅模型试验为例,进行有限元数值仿真计算,通过与实验结果对比,验证所提出的钢板材料失效准则的适用性。更多还原

【Abstract】 How to reasonably define the failure criterion of steel plate becomes more and more important in finite element technology. Based on the BWH failure criterion, a set of formula for isotropic material considering hardening is proposed, and this criterion is embedded in the LS-DYNA program. Then, using the updated program, a finite element numerical simulation is carried out for an example of ship-grounding model test. By the comparison of numerical simulation results with those of the model test, the applicability of the proposed steel plate failure criterion is validated.更多还原