圆柱型壳体动态分析

Analysis of Cylinder Shell Dynamic Characteristic

利用有限元ANSYS中系统动力学中模态分析的方法,对两端简支或固定壳体的刚度与壳体固有频率的关系加以分析,得出壳体刚度与壳体固有频率具有相同的增减特性；从而对某些可以抽象为圆柱壳体构件(如潜艇动力舱段、电动机壳体等)的振动传递起到改善作用,减小壳体振动的向外辐射,降低其向外的辐射噪声。

Use the mode analysis of system＇ s dynamics in ANSYS , to analyze the relationship of shell＇ s stiffness and shell＇ s natural frequency , and get that , the stiffness and the natural frequency have the same characteristics of decrease and increase. Then, we could enhance the vibration characteristic , reduce the vibration＇ s transfer out and noise radiation out .