一种考虑钢材硬化各向同性的失效准则在船舶碰撞数值仿真中的应用

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Abstract With the rapid development of computer technology, finite element numerical simulation technology is used to study ship collision and grounding scenarios to provide more reliable and accurate simulation results, it has the advantages of saving time, manpower and cost. How to reasonably define the fracture failure criterion of steel plates is a very important problem in finite element technology. Here, based on the BWH failure criterion, a set of formulas for the failure criterion of isotropic materials considering hardening was proposed and coded using the LS-DYNA program as its secondary development. The code of this new criterion was embedded in the LS-DYNA program. Then, using the updated LS-DYNA program, a finite element numerical simulation was performed for an example of ship-grounding model test. Comparing the numerical simulation results with those of the model test, the applicability of the proposed steel plate failure criterion was validated.

Key words： ship grounding and collision finite element method material failure criteria BWH LS-DYNA

Received: 08 February 2017 Published: 28 June 2018

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2018/V37/I13/27

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