隔膜泵十字头处连接松动动力学建模与分析  

Dynamic modeling and analysis for loosened joint of membrane pump's crosshead

作　　者：史丽晨[1] 段志善[1] 

机构地区：[1]西安建筑科技大学机电学院,陕西西安710055

出　　处：《矿山机械》2009年第1期70-73,共4页Mining & Processing Equipment

基　　金：陕西省自然科学基金资助项目(2007E_204);教育部博士学科点专项科研基金资助项目(20070703003)

摘　　要：主要研究了隔膜泵十字头处连接松动的非线性特性。将连接松动按照磨损故障来考虑,采用碰撞—分离二状态接触力模型,建立了相应的动力学模型。在此基础上进行数值仿真,研究了不同参数下的动态响应。初步认为,十字头连接松动的动态响应受到曲柄转速的影响较大,与磨损量和活塞表面的液体压力也有一定的关系。为往复机械的磨损动力学分析奠定了基础。The primary goal of this research is the non-linear properties of the looseness of membrane pump＇s crosshead. The author considers the looseness of the joint as wornout trouble. According to the contact force model in the contact-separation state, a dynamic model is established. The dynamic responses in conditions of different parameters are investigated with numerical simulation method. The results of the study initially indicate that the dynamic responses is mainly influenced by the rotating speed of the crank. Additionally, the dynamic responses is related with the wornout quantity and liquid pressure in piston .face. All these will lay a foundation for the wear dynamic analysis of a reciprocating machine.

关 键 词：隔膜泵 十字头 松动 磨损 动力学 

分 类 号：TH323[机械工程—机械制造及自动化]