环肋圆柱壳模型在水下爆炸响应试验中的边界条件  

Boundary condition of ring-stiffened cylindrical shell in underwater explosion response experimentation

作　　者：孟涛[1,2] 朱锡[1] 牟金磊[1] 王伟力[2] 

机构地区：[1]海军工程大学船舶与动力学院,武汉430033 [2]海军航空工程学院,山东烟台264001

出　　处：《海军工程大学学报》2012年第4期104-107,共4页Journal of Naval University of Engineering

摘　　要：为验证试验研究中环肋圆柱壳模型的边界条件,运用大型商业有限元程序MSC.DYTRAN分别设置3种边界条件,对试验过程进行了数值仿真研究。壳体塑性变形的仿真过程显示,迎爆面中部首先变形,随后侧爆面和背爆面相继变形,壳体最终形成数个凸凹相间的轴向凹凸带,最大塑性变形发生在迎爆面中心肋位。壳体塑性变形的仿真计算结果与试验结果的对比结果表明:固支边界条件符合试验实际情况。该结论适用于试验研究中模型边界条件的确立。To validate the boundary conditions of the ring stiffened shell model in experimental inves- tigations, three boundary conditions set according to MSC. DYTRAN were used for simulation and a- nalysis of the experimental process. The maximal plastic deformation occured in the center rib of sur- face face-explosion. The comparison of experimental and simulated results of plastic deformation indi- cates that the fixed boundary condition fits well with experiments. This conclusion is suitable for the determinations of model boundary condition in experimental study.

关 键 词：水下爆炸 环肋圆柱壳 边界约束条件 

分 类 号：U674.703[交通运输工程—船舶及航道工程]