多加筋圆柱壳体振动特性的导纳法研究  

VIBRATIONAL CHARACTERISTICS OF A MULTI-BEAM-STIFFENED CYLINDRICAL SHELL BY MOBILITY ANALYSIS

作　　者：陈晓利[1] 盛美萍[1] 

机构地区：[1]西北工业大学航海学院,西安710072

出　　处：《振动与冲击》2007年第4期133-135,157,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金(编号:50375121);教育部新世纪人才计划(编号:NCET-04-0959)资助

摘　　要：弹性多加筋圆柱壳体由于其结构的特点,广泛应用于工程实际,因此对其进行振动研究具有重要的工程价值和应用意义。文章利用薄板和梁的导纳公式推导了多加筋圆柱壳体在任意位置简谐力激励下的弯曲振动响应,并对特定参数的多加筋圆柱壳体的振动能量分布进行了数值仿真,结果表明振动能量在加筋处呈现急剧衰减。还对不加筋圆柱壳以及加不同数目筋的圆柱壳的振动响应进行了对比,得到了加筋和加不同数目的筋对结构振动能量分布和传播的影响。Due to its structural characteristics of a multi-beam-stiffened cylindrical shell,it is widely used in engineering practices,so it is important to do vibration study on an elastic beam-stiffened cylindrical shell.Utilizing transfer point mobility formulas of thin plates and beam structures,the bending vibration response formulas of a multi-beam-stiffened cylindrical shell with simple harmonic excitation at any position are deduced.Numerical simulations are done for its vibration energy distribution with specified parameters.The results show that the vibration energy at the stiffened beams greatly drops.The effects of stiffened beams and their different numbers on the vibration energy distribution and transmission of the oylindrical shell are analyzed.

关 键 词：多加筋圆柱壳体 导纳 振动响应 减振 

分 类 号：TB53[理学—物理]