不同攻角舰船结构动态响应的数值模拟

摘要

In this paper, the dynamical response of a surface ship has been simulated by the commercial finite element program ABAQUS. On the basis of the theory of warship facility shock vibration, numerically simulates the shock response of the typically capital warship,analyses the influence to the response of warship structure caused by the explosion azimuth. Hie research shows the ship shock response has locality,the shack range and strength of vertical explosion are much bigger than the broadside; and the peak value of vertical acceleration that is outside motherboard of warship will increase as long as explosion azimuth decrease.%运用通用有限元分析软件ABAQUS对某型舰进行全船冲击响应数值模拟,分析水下爆炸攻角对舰船结构动态响应的影响,并得出以下结论:水下爆炸载荷作用下舰船结构响应具有局部性,船体的受冲击范围和强度随爆炸攻角的增大而减小；在研究舰船冲击环境时,攻角在30 °～60 °范围内的测点应该多取；舰船外底板中心部位节点的垂向加速度峰值随爆炸攻角的增大而减小,且加速度响应的衰减速度随爆炸攻角的增大而下降.