Aiming at the poor ride comfort of an independently developed dump truck,an optimization on the parameters of its cab mounts is conducted with the combination of design of experiment and response surface method.Firstly,a modal analysis on its cab is performed with finite element software HyperWorks,and a multi-rigid-flexible body coupled dynamics model for cab mounts is established with ADAMS.Then the vibration data acquired by real vehicle road test on working spot are analyzed.Finally an optimization on the parameters of cab mounts is carried out by using response surface method,with the spring stiffness and damping of cab mounts as experiment factors and minimizing the maximum amplitude of vibration acceleration at cab floor under seats as optimization objective.The results show that after optimization,cab vibration obviously reduces,enhancing the ride comfort of vehicle.%针对某厂商自主研制的自卸车存在乘坐舒适性较差的问题,采用试验设计技术与响应面法相结合的方法对其驾驶室悬置系统参数进行优化.首先,在有限元软件HyperWorks中对驾驶室进行模态分析,采用ADAMS软件建立驾驶室悬置系统的刚柔耦合多体动力学模型;接着,对实车工地路试采集的振动数据进行分析;最后,以驾驶室悬置系统的弹簧刚度和减振阻尼为试验因子,以驾驶室座椅地板处的振动加速度的最大幅值的最小化为优化目标,运用响应面法对悬置系统的参数进行优化.结果表明,优化后驾驶室的振动明显减弱,提高了车辆的乘坐舒适性.
展开▼
