某型车路面冲击载荷作用下瞬态动力分析

摘要

In a dynamic environment , in order to predict people -car system vibration response characteristics and vehicle ride comfort, according to the transient dynamics and the inter relation about the system road-car-person,a nine DOF dynamic model of car ride is constructed.Based on acceleration response of the human-vehicle system in different locations caused by load transients impact in case of uneven pavement, simulation and analysis are done by software ANSYS.Simulation results show that nine DOF dynamic model are passed to the body′s acceleration attenuation to the design range under the appropriate parameters,which meets the design requirements of the vehicle comfort.%在动态环境下，为了预测人-车系统的振动响应特性及车辆乘坐舒适性，根据瞬态动力学原理和路-车-人系统间的相互作用，构建了9自由度汽车乘坐动力学模型。基于路面不平情况下的瞬态冲击载荷而引起的人-车系统不同位置的加速度响应，在ANSYS软件中进行仿真分析。仿真分析结果表明：该9自由度车型在特定的参数匹配下，在路面不平引起的瞬态冲击载荷作用时，传递到人体的加速度能快速的衰减到设计范围内，满足整车乘坐舒适性的设计要求。