筒式夹具动态特性

Dynamic characteristic of drum fixture based on ANSYS

为保证汽车减振器筒式夹具结构的安全性和可靠性,利用PRO/E三维造型软件对汽车减振器筒式夹具进行实体建模,并以ANSYS分析为基础,针对夹具的结构设计进行动力学分析,得到模态振型图和谐响应振动频率曲线,以验证夹具变形是否满足设计要求.模态分析结果表明:正常工作频率段远远避开了结构低阶固有频率,进而避免了共振及共振力;谐响应分析结果表明,在正常工作频率范围内,夹具的各项动态性能参数都满足要求.研究结果为减振器夹具的动态设计及残余应力振动时效工艺提供了有益的数据分析及方法.

In order to keep safety and reliability of the car shock absorber drum fixture structure,the drum fixture of automobile shock absorber was modeled by means of PRO/E.Based on ANSYS analysis,dynamics analysis was used in structural design of the drum fixture.The diagram of modal vibration mode and the curve of harmonic response frequency are obtained in order to test whether the deformation of fixture meets requirements of the design.The results of the modal analysis show that the working frequency is far away from the low order natural frequency of the structure,and avoids the resonance.The results of the harmonic response analysis show that all dynamic performance parameters of the fixture meet the requirements in the range of normal operating frequency.The study results provide useful data analysis and methods for the dynamic design of the shock absorber fixture and the residual stress vibration technology.