论文部分内容阅读
大型轮式装载机动臂部件是关键结构件,在恶劣工作环境中,容易因破坏而失效。采用两种方法对其进行分析:一种是应用多体动力学与有限元相结合的方法,首先在ADAMS中建立装载机整体结构件系统的刚-弹耦合动力学模型,进行作业过程的动力学分析,然后在ANSYS中建立整体结构件系统的三维有限元模型,研究各部件间连接的模拟,对装载机工作过程典型工况进行有限元分析,获得动臂结构性能特征;另一种是应用传统方法,对动臂部件单独分析,找到动臂上的危险部位。对两种方法进行对比,结果表明:刚-弹耦合整体系统结构分析,可精确求得各铰点受力大小,使整个系统动力学仿真更加接近真实情况。基于刚-弹耦合的多体系统模型,考虑各部件间相互影响,可以更加直观地发现整体结构中的薄弱部位,而薄弱环节就是实际使用中出问题的部位,由此说明装载机刚-弹耦合整体系统结构分析的合理性与实用性。
Large wheel loader boom components are the key structural components, in harsh working conditions, easy to failure due to failure. Two methods are used to analyze the model: One is the method of combining multi-body dynamics with finite element method. Firstly, the dynamic model of rigid-elastic coupling of loader’s integral structural system is established in ADAMS Then the three-dimensional finite element model of the whole structure system is established in ANSYS to study the simulation of the connection between the components and the finite element analysis of the typical working conditions of the loader to obtain the structural characteristics of the boom; the other is Using traditional methods, separate analysis of the boom components to find the dangerous parts of the boom. Comparing the two methods, the results show that the structural analysis of the whole system of rigid-elastic coupling can accurately calculate the force of each hinge, so that the whole system dynamics simulation closer to the real situation. Based on the multi-body system model of rigid-elastic coupling, considering the interaction between the components, the weak parts in the overall structure can be found more intuitively, and the weak links are the problems in actual use. The rationality and practicability of the coupled system structure analysis.