摘要
应用有限元ANSYS软件对罗茨鼓风机壳体进行动态特性分析,计算风机壳体振动的固有频率与振型,给出振型图。分析结果表明,风机壳体的固有频率高于转子系统的旋转基频,结构振动主要表现为弯曲、扭转和弯扭组合形态。通过风机壳体动态特性分析,能够预知结构设计的薄弱环节,为减振降噪与结构改型提供参考。
In this paper, the dynamic characteristic of Roots blower's shell is analyzed by the ANSYS code. The natural frequencies and the vibration modes of the shell are given. The output of computation shows that the natural frequency of the shell is higher than the fundamental frequency of the rotor system, and the vibration modes of the shell structure are mainly bending, twisting, and their combination. The dynamic analysis of the shell may predict the faults in structural design, and provide some scientific basis for reducing the structural vibration and the noise of the Roots blower.
出处
《噪声与振动控制》
CSCD
北大核心
2010年第1期15-17,21,共4页
Noise and Vibration Control
基金
山东省自然科学基金项目资助(Y2006F38)
关键词
振动与波
风机
壳体
模态分析
有限元
ANSYS
vibration and wave
Roots blower
shell
modal analysis
finite element
ANSYS