超空泡航行体刚柔耦合动力响应有限元分析  

Finite element analysis of rigid-flexible coupling dynamic response of supercavitating vehicle

作　　者：苗海[1] 李魁彬 孙炜 邓磊[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033 [2]海军指挥学院后勤与装备系,南京210016

出　　处：《海军工程大学学报》2015年第2期20-23,56,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(10772196)

摘　　要：考虑航行体大范围转动,根据哈密顿原理推导了超空泡航行体在一次近似模型变形下的刚柔耦合动力响应方程,定性分析了其与零次近似模型下方程的区别,并对方程进行了定量计算。结果表明:一次近似模型相比零次近似模型下的横向振动方程,刚度矩阵项增大;所推导方程能够用于定量分析和直观描述超空泡航行体刚柔耦合下的变形。According to Hamilton＇s principle, the rigid-flexible coupling dynamic response equations of the supercavitating vehicle are derived. The large rotary motion and one-order and zero-order ap- proximate model of the axial deformation are considered. The equations of different approximate mo- dels are qualitatively compared and analyzed, and the equations are quantitatively calculated. The computation results show that the stiffness matrix item in the transverse vibration equation of the one- order approximate model are increased compared to the zero-order approximate model; the derived equations can be used to quantitatively analyze and visually describe the rigid-flexible coupling defor-mation of supercavitating vehicle.

关 键 词：超空泡 水下航行体 有限元 刚柔动力性 

分 类 号：O353.4[理学—流体力学]