The Finite Element Model And Dynamic Characteristic Analysis For Axle Housing Of Earth Scrape

Axles axle housing is one of major parts, it plays the role of supporting the weight of earth scrape. Simultaneously, it is also a blanket of main transmission device, differential and gearing, and transfer the weight to the wheel. Through the drive axle housing, Force(cross force, break force, tractive force, etc)act on the driving wheel transfer to the frame.The performance of axles housing depend mainly on its response in static and dynamic load. But for a very long time, most of domestic and foreign axle housing of earth scrape use the convenient design methods. It is that axles housing is as a beam, and through checking as each section of the maximum stress value whether to exceed material yield limit to judge strength whether meet the requirements. Compared with the actual situation, difference in the calculated should not be ignored. For example, our school complete scientific research projet "key pats of import earth scrape improved localization" cooperation with yunnan chihong Zinc&Germanium Co., Ltd. If use the traditional strength calculation axle housing, it occasionally has ruptures. It is a worthy of studying engineering application subject that improve the safety and reliability of axle housing of earth scrape with modern and analysis techniques. It is one of the effective ways to solve the problem that establish axle housing'finite element model by the finite element method, then the dynamic characteristic analysis and optimizationdesign it.This thesis's subject comes from our school and yunnan chihong Zinc&Germanium Co., Ltd. cooperative research project. We do some research work to the engineering problems that one type of imported earth scrape' axle housing is inproved localization,then happens fracture from time to time.This thesis search a large number of references and set up three-dimensional model of axles hosing of earth scrape base on Solid Edge software, and then convert it to parasolid format in order to import files into the finite element analysis software which do some mesh, applid load and constraints. At last, it solve and post-processing. The thesis calculates stress and strain of axles hosing of earth scrape in three risk conditions of shovel, uneven and deboost. The results show that deformation of axle housing conforms the national requirements, so rigidity is better. But stress in deboost is beyond the yield limit of material, so there is lack of some strength. At the same time axles housing is reseached in dynamic analysis, then analy natural frequency and mode of vibration in first 16 of axle housing in free conditions. Utilize the research results to propose improving the measure to axle housing. To verify the rationality of the improvement, we analyzed the improved axle housing with finite element method.This thesis research and analysis the finite element modeling and dynamic characteristics of axle housing using advanced technologies of three-dimensional design and finite element.Then make some improvement design.It solved practical engineering problems in technically,and achieve some achievements. The reseach of this thesis provides a new effective method and certain technical basis for design and analysis of earth scrape'axle housing,and the method has a great reference and engineering value.