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以JP60C型车用增压器涡轮叶轮为研究对象,基于有限元分析的转子动力学分析软件DyRoBeS,对减重前后的增压器转子进行了临界转速分析;采用快速成型技术加工了蜡模,浇铸了减重优化的涡轮叶轮,对装配好的增压器进行了高速动平衡试验。分析及试验结果表明,由于涡轮重量的减轻降低了转子的柔性,减重优化后的轴承-转子系统的临界转速有所降低,但其工作转速仍工作在2阶临界转速和3阶临界转速之间,涡轮减重后增压器工作转速远离转子各阶临界转速,从而说明涡轮减重优化的合理性和有效性。
Taking JP60C turbocharger turbocharger as the research object, based on finite element analysis of the rotor dynamics analysis software DyRoBeS, the critical speed of supercharger rotor before and after weight loss was analyzed. The wax pattern, A weight-optimized turbine wheel was cast and a high-speed dynamic balancing test of the assembled turbocharger was performed. The analysis and experimental results show that due to the reduction of the weight of the turbine, the rotor flexibility is reduced, and the critical speed of the bearing-rotor system with reduced weight is reduced. However, the working speed still operates at the second critical speed and the third critical speed Turbocharger turbocharger working speed away from the critical speed of each stage of the rotor, turbine rationale and weight optimization to demonstrate the rationality and effectiveness.