特种材料球鼻艏抗冲击特性数值研究  

Numerical Simulation on Anti-shock Performance of Bulbous Bow for Special Material

作　　者：孙龙泉[1] 王庆周[1] 郑建丽[2] 

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001 [2]中国水产科学研究院渔业机械仪器研究所,上海200092

出　　处：《船海工程》2013年第6期1-7,11,共8页Ship & Ocean Engineering

基　　金：国家安全重大基础研究项目子专题(6131 57020102);中央高校基本科研业务费资助(HEUCF130107)

摘　　要：为探讨球鼻艏结构的抗冲击性能,采用数值手段对典型球鼻艏结构进行一体化建模,基于Abaqus的声固耦合法模拟水下非接触爆炸载荷与球鼻艏结构的相互作用,提取设计工况下的球鼻艏典型部位的冲击响应结果。结果表明:钛合金材料极大提高了球鼻艏结构的局部抗冲击性能,但在遭受水下非接触爆炸载荷时,仍出现了明显的塑性变形;球鼻艏底部钢结构由于采用纵横肘板进行支持,具有优异的安全性;随着冲击因子的增加,球鼻艏结构的应力近似呈线性增长,而塑性应变曲线随着冲击因子的增加呈指数曲线增加。In order to research the bulbous bow on the anti-shock performance, the integrated model was established by nu- merical method based on full investigation. The interaction between the non-contact explosion load and the structure was simula- ted by the acoustic-structure coupling method with the Abaqus. The conclusion was dawn as follows ： as the application of titani- um alloy enhances the shock resistance while there exists obvious plastic deformation subjected to non-contact explosion; the safe- ty of steel structure in the bottom is improved owning to the brackets in the length and breadth; the strain of the bulbous bow pres- ents the linear increase and the plastic strain presents exponential increase with the impulsive factor increasing.

关 键 词：球鼻艏 水下爆炸 结构响应 局部强度 

分 类 号：U661.44[交通运输工程—船舶及航道工程]