基于扫频振动门系统驱动电机壳体优化设计

Optimum Design of Drive Motor Housing Based on Sweep FrequencyVibration Door Pump System

以扫频振动试验标准和振动疲劳理论为基础,介绍了振动扫频试验和扫频振动疲劳的计算方法,推导了扫频振动结构中某点振动疲劳损伤量。以新能源公交车电动内摆门门系统驱动机构电机壳体为研究对象,基于Workbench构建了有限元模型,进行扫频振动分析,根据理论计算电机壳体薄弱地方,并借助试验验证,再对电机壳体进行结构加强改进,基于限元分析方法对新结构进行扫频耐振性仿真,同时将其带入门系统进行门系统扫频试验,验证该计算方法的可行性和可靠性。

Based on sweep frequency vibration test standard and vibration fatigue theory,vibration sweep frequency test and calculation method of sweep frequency vibration fatigue were introduced.A vibration fatigue damage in swept frequency vibration structure was derived.Taking the motor case of driving mechanism of electric inner swing door system of new energy bus as the research object.Finite element model was built based on Workbench,sweep frequency vibration analysis was carried out,weakness of motor shell was calculated according to theory and verified by test.Then the structure of the motor shell was improved,sweep frequency and vibration resistance of new structure was simulated by finite element analysis.At the same time,the sweep frequency experiment of the door system with the entry system was carried out to verify the feasibility and reliability of this calculation method.