某车动力总成悬置系统参数优化设计

Optimization Design of Powertrain Mounting System Parameters

本文针对某车动力总成悬置系统开展研究,通过对模型进行适当简化,在多体动力学软件ADAMS中建立了动力总成悬置系统的参数化模型,并对模型进行了静态振动仿真,得到系统的固有频率和解耦率。之后对动力总成悬置系统参数进行优化,得到了灵敏度分析结果,使用遗传算法建立了数学模型,寻求最优解,得到了动力总成悬置系统的优化结果。分析和测试结果表明,优化后悬置系统隔振率有大幅提升。

In this paper, the powertrain mounting system of a vehicle was studied. By simplifying the model appropriately, a parameterized model of powertrain mounting system was established in ADAMS, and the static vibration simulation of the model was carried out to obtain the natural frequency and decoupling rate of the system. Then the parameters of the powertrain mounting system were optimized, and the sensitivity analysis results were obtained. The mathematical model was established by using genetic algorithm to seek the optimal solution, and the optimization results of the powertrain mounting system were obtained. The analysis and test results show that the vibration isolation rate of the optimized mounting system is greatly improved.