80型轮式装载机作业过程的刚-弹耦合多体动力学分析

Multi-body System Dynamic Simulation of the Working Process of the 80 Wheel Loader with the Coupling Method of Rigid Body and Flexible Body

轮式装载机是用于装运散料为主的工程机械,经常工作在露天矿山或大型建筑工地,工作环境恶劣,装载机自身系统又十分复杂,其结构件容易破坏失效,因此,精确求取某些关键部件的连接铰点的受力是很重要的,本文采用现代设计方法来研究这个问题。在三维软件CATIA中建立装载机工作装置、车架系统的三维模型,应用多体动力学与有限元相结合的方法,建立了装载机工作装置、车架系统的刚-弹耦合动力学模型,研究了刚-弹耦合的方法,模态中性文件的生成、导入ADAMS中的方法,最终用刚-弹耦合模型进行了作业过程的动力学仿真,得到了一些关键铰点的整个作业过程的受力历程曲线。

Wheel loader was a kind of engineering machinery used to load and transport materials,which always worked in the open mine or large-scale construction sites.Due to the always terrible working environment and the very complex loader-self,its structure components could be easily damaged.It was very important to obtain accurate key hinge point force of some key components.The problem was researched with modern design method in this paper.The 3D model of the working device and frame system were achieved with catia software,the rigid and flexibledynamic model in ADAMS was established with the methods of the multi-body system dynamic and the finite element,the coupling method of rigid body and flexible body was researched,the generation methods and importing to ADAMS method of the neutral paper were studied.Finally,through the dynamic simulation of the working process of the loader with rigid body and flexible body,some force time curves of the key points on the key component were got in the working process.