车用增压器涡轮的振动特性分析及试验验证  

Vibration Property Analysis and Experimental Verification of Vehicle Turbocharger Turbine

作　　者：郭凯[1] 李颂[1] 高晓杰 武广红 陈凌云 

机构地区：[1]中国北方发动机研究所柴油机增压技术重点实验室,山西大同037036 [2]大同北方天力增压技术有限公司,山西大同037036 [3]山东特种工业集团有限公司,山东淄博255201

出　　处：《车用发动机》2012年第6期65-68,共4页Vehicle Engine

摘　　要：对增压器涡轮的振动特性进行了理论分析,建立了涡轮有限元模型,对涡轮的振动特性进行了有限元计算,得到了涡轮的振动固有频率和模态。对涡轮进行了模态试验,测得了涡轮的振动固有频率和模态,并与有限元计算结果进行了对比,证明有限元计算结果误差很小。最后,根据涡轮叶片振动简化模型,提出了提高涡轮叶片固有频率的改进措施。The theoretical analysis of vibration property for turbocharger turbine was carried out,the finite element model of turbocharger turbine was built,the vibration property of turbine was calculated with the finite element,and the natural frequency and mode of turbine were acquired.The modal experiment was carried out and the natural frequency and mode of turbine were measured.Compared with the experiment results,the FEM results were proved to be accuracy.In the end,the measures of increasing turbine natural frequency were put forward according to the vibration simplified model of turbine blade.

关 键 词：涡轮增压器 涡轮 有限元法 振动特性 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]