LNG作为一种在船舶领域广泛运用的优质能源，其泄漏爆炸事故会对船舶舱室结构以及工作人员的生命安全产生严重危害。本文以某LNG燃料动力船舱室结构为研究对象，基于显式非线性有限元软件MSC.Dytran，采用TNT等效法对舱室结构在LNG泄漏爆炸作用下的响应结果进行数值模拟。从冲击波压力分布、结构损伤以及吸能分析等角度进行分析，发现承受冲击波直接损伤最严重的是上下甲板；舷侧外板受反射波影响最大；而吸收能量最多的是骨架构件。本文研究可为LNG燃料动力船抗爆性能优化提供参考。
LNG is a high-quality energy widely used in the field of ships, and its leakage and explosion accidents will cause serious harm to the ship's cabin structure and the lives of workers. Based on the explicit nonlinear finite element software MSC.Dytran, this paper takes the cabin structure of an LNG fuel-powered ship as the research object and uses the TNT equivalent method to numerically simulate the response of the cabin structure under the action of LNG leakage and explosion. From the perspectives of shock wave pressure distribution, structural damage deformation and stress-strain distribution, the dynamic response law after leakage and explosion in the cabin is analyzed, which provides a reference for the optimization of the anti-explosion performance of LNG fuel-powered ships.
2023,45(24): 14-19 收稿日期：2022-11-18
DOI：10.3404/j.issn.1672-7649.2023.24.003
分类号：U663.89
作者简介：束元超(1996-),男,硕士研究生,研究方向为LNG泄漏爆炸风险
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