某核动力平台双层舷侧结构耐撞性试验及数值分析  

Experiment and numerical analysis of crashworthiness of the double-skin side structure on a nuclear power platform

作　　者：曲源[1] 陈冠宇 刘均[2] 张攀[2] 程远胜[2] QU Yuan;CHEN Guanyu;LIU Jun;ZHANG Pan;CHENG Yuansheng(Wuhan Second Ship Design and Research Institute,Wuhan 430205,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430205 [2]华中科技大学船舶与海洋工程学院,湖北武汉430074

出　　处：《中国舰船研究》2022年第S01期59-65,共7页Chinese Journal of Ship Research

基　　金：国家重点研发计划资助项目(2017YFC0307800)。

摘　　要：[目的]旨在研究某核动力平台双层舷侧结构的耐撞性能。[方法]分别建立全船和局部双层舷侧结构碰撞有限元模型,利用LS-DYNA软件进行碰撞仿真分析;在此基础上,设计双层舷侧结构准静态挤压缩比试验模型,开展相应准静态挤压试验,并与数值仿真结果进行对比。[结果]结果显示,对于船舶低速碰撞,局部结构模型与全船模型计算的结构响应基本一致。设计的准静态挤压缩比试验结果与数值仿真结果吻合较好,较好地反映了低速碰撞特性和结构变形模式,验证了数值仿真方法的正确性。双层舷侧结构的核动平台在受到5 000 t级船舶以2 m/s的速度碰撞时未发生破口,具有较好的抗碰撞性能。[结论]采用局部结构模型计算碰撞响应的精度较的,可大幅减少建模和计算的工作量。研究工作对于同类结构耐撞性能分析及碰撞试验研究具有一定的参考价值。[Objectives] This study aims to explore the crashworthiness of a nuclear power platform’s double-skin side structure.[Methods]Finite element models of the full platform and partial double-skin side structure are established respectively, and the collision is carried out using LS-DYNA software. Based on the simulation analysis, a scale quasi-static squeeze test model is designed, and the quasi-static squeeze test of the double-skin side structure is carried out and compared with the numerical simulation. [Results]The results show that for low-speed ship collisions, the structural response calculated using the local double-skin side structure model is basically consistent with that calculated using the whole ship model;thus, the quasi-static scaled test results are in good agreement with the numerical simulation results and can reflect the characteristics and structural deformation mode, thereby verifying the numerical simulation method. Meanwhile, the test results show that the double-skin side structure of the nuclear power platform remains intact when colliding with a 5 000 ton class ship at a speed of 2 m/s, which means that it has good crashworthiness. [Conclusions]This study shows that using a local double-skin side structure model to calculate collision response has high accuracy and greatly reduces the modelling and calculation workloads. The results of this study can provide valuable references for structural crashworthiness design in marine engineering.

关 键 词：船舶碰撞 双层舷侧结构 缩比模型试验 有限元仿真 

分 类 号：U661.43[交通运输工程—船舶及航道工程]