车厢可卸式垃圾车拉臂系统的刚柔耦合仿真分析

针对车厢可卸式垃圾车拉臂系统存在的所受负载不断变化、工况较多的问题,对拉臂系统在满载装卸过程中油缸力、拉臂作用力以及拉臂应力、应变的动态变化规律进行了研究,采用刚柔耦合的分析方法,通过机械系统动力学软件ADAMS和有限元分析软件ANSYS,建立了以拉臂为柔性体的刚柔耦合仿真系统,并进行了联合仿真分析,得到了拉臂系统所受作用力在不同拉臂转角、举升角时的变化值以及拉臂最大应力、应变发生的位置,验证了拉臂装配体强度及刚度要求符合设计要求.研究结果表明,刚柔耦合仿真能有效地模拟拉臂系统受力情况,与典型的工况方法相比,考虑动载对强度分析的影响,能更准确确定拉臂系统的危险工况,从而为拉臂系统的结构优化提供较为可靠的依据.

Simulation analysis of the pull arm system of detachable garbage truck based on rigid-flexible coupling

Aiming at the problem of the variable load and working conditions for pull arm system of detachable garbage truck, oil cylinder lifting force, pull arm force and pull ann changing rules of stress and strain in the packing and discharging were studied. Based on the rigid- flexible coupling analysis method, the rigid-flexible coupling simulation system that the pull arm was regarded as flexible body was established by using the mechanical system dynamics software ADAMS and finite element analysis software ANSYS, and the joint simulation was done, so the force of pull arm system at different pull arm angles and lifting angles and the position of the maximum stress and strain were obtained, and the strength and stiffness of pull arm assembly body were verified to meet the design requirements. The results indicate that rigid-flexible coupling simulation can effectively simulate the force of pull arm system, and can more accurately determine the dangerous condition of pull arm system comparing with the method of typical working condition because of considering the dynamic load effects on strength analysis, which provides a reliable reference for structure optimization of pull arm system.