基于SolidWorks与ANSYS的高压乳化液泵曲轴力学特性分析

Dynamic Characteristics Analysis on Crankshaft of High Pressure Emulsion Pump Based on Solid Works and ANSYS

以BRK500/37.5型高压乳化液泵曲柄连杆机构为研究对象,通过Solid Works三维软件建立了高压乳化液泵的三维实体模型,并利用自行研发的曲轴受力自动计算系统对曲轴进行了受力分析,得到曲轴载荷的变化规律。选取其中5种最危险的工况,利用ANSYS WORKBENCH和Solid Works之间的无缝连接,将做好的模型导入到ANSYS WORKBENCH软件中去,对曲轴进行静力学分析,得到曲轴的应力和应变分布情况,证明了该曲轴在强度和刚度方面均满足工作要求。同时对曲轴进行了自由状态和约束状态下的模态分析,计算得到其固有频率和振型,并对两种模态分析结果进行了比较,证明了该曲轴具有良好的动态特性,结构设计较为合理。分析结果为乳化液泵曲轴的结构改进和优化设计提供参考。

The three-dimensional（ 3-D） solid model of the high pressure emulsion pump box was established with Solid Works 3-D software by taking the study object of mechanism of joint rod of the crankshaft of the BRK500 /37. 5 high pressure emulsion pump.The force analysis of the crankshaft was conducted by using self-developed of a system for calculating the force of crankshaft automatically,and then the changing rule of the crankshaft load was obtained. With five most dangerous working conditions selected,the completed model was imported into the ANSYS WORKBENCH software by using the seamless connection between ANSYS WORKBENCH and Solid Works,the static analysis of the crankshaft was carried out,and the stress and the strain distortion conditions of the crankshaft were determined. It was proved that in aspects of strength and stiffness of crankshaft,working requirements were met. Moreover modal analysis was carried out on the crankshaft under free and restrained conditions,in addition,the natural frequencies and models of vibration of the crankshaft were obtained through calculation,and the results from these two kinds of modal analysis were compared,which prove that the crankshaft has good dynamic characteristics with quite reasonable structural design. The analysis results can offer a basis for the optimization and the improvement of design of the structure of crankshaft of the emulsion pump.