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.%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.
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