基于灵敏度分析的曲轴扭振减振器优化设计

为提高扭振减振器设计的速度和精度，建立了一种基于灵敏度分析的减振器结构参数优化设计模型。通过考察减振器结构参数对振动性能影响的关系，探讨了减振器各个参数的优化设计方法，然后通过扭振模型灵敏度分析以及设计导数的选择，对实际减振器进行了优化设计。将优化结果所得的扭振与经验设计结果进行对比，优化计算结果的共振峰向高频方向移动，共振的振幅大小比经验设计方法的结果更小，说明了上述优化设计方法的快捷和精确。

Optimal design for torsional vibration damper based on sensitivity analysis

For improving the design speed and accuracy, we proposed a numerical model of optimal design for torsional vibration damper in engine shafting based on sensitivity analysis. Firstly by investigation on relationship between design parameter of torsional vibration damper and vibration character, a method of optimal design for torsional vibration damper was discussed. Then through sensitivity analyzing and design variables choosing, optimal design was carried out. At last, the validity and correctness of the model was verified by comparing the above results and experience calculation results. The optimal resonance peak was shifted to higher frequency direction and the resonant amplitude was smaller than that of experience calculation results, which showed precision and accuracy of the optimal design method.