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以某工程装载机动力总成悬置系统为研究对象,为改善其隔振性能,对悬置系统固有频率进行优化配置的同时对其解耦率进行优化布置。以悬置静刚度和安装位置为优化参数,对固有频率和解耦率进行优化匹配。结果表明,优化后悬置系统各阶固有频率分配更加合理,垂直方向和绕曲轴方向解耦率得到显著提高,并仿真分析了优化方案的可靠性,最后通过实车测试验证了悬置系统的隔振性能得到较大改善。
In order to improve the vibration isolation performance of an engineering loader powertrain mounting system, the natural frequency of the suspension system is optimized and the decoupling ratio is optimized. Taking the static stiffness and the mounting position as the optimization parameters, the natural frequency and the decoupling ratio are optimized and matched. The results show that the natural frequency distribution of the optimized suspension system is more reasonable, the decoupling ratio in the vertical direction and around the crankshaft is significantly improved, and the reliability of the optimization scheme is simulated and analyzed. Finally, the actual vehicle test is used to verify the suspension system Vibration isolation performance has been greatly improved.