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Analysis On Working Equipment Of WY22 Excavator Based On ANSYS And Pro/E

Posted on:2009-05-18Degree:MasterType:Thesis
Country:ChinaCandidate:R J ZhangFull Text:PDF
GTID:2132360308979794Subject:Mechanical and electrical engineering
Abstract/Summary:PDF Full Text Request
The working equipment of a hydraulic excavator, which is an important part to complete the function of hydraulic excavators, affects directly the working performance and the reliability of the hydraulic excavator. This thesis is taking the working equipment of WY22 excavator as an example, the finite element analysis and dynamic analysis are applied for it. The following are the main contents of this paper.First of all, this thesis analyzes the market demand for excavators and gives the importance and meanings on improving excavator manufacturing quality in the first. Through the introduction of the analysis of excavator working equipment's design, the problems companying with the working equipment design is presented and the theory of excavator engineering analysis is discussed. And then the methods and steps using finite element analysis and movement simulation are well elaborated.Secondly, the structure analysis of boom and arm are conducted. Their 3D structure models of WY22 excavator are built by software ANSYS. According to two kinds of working condition, the mechanics model of the boom and the arm are established.Thirdly, after defining the element type and material attribute based on practical situation, finite element models of WY22 excavator are established. The boundary condition and the processing mode of loads on the hole can be determined, and displacement and load are applied to finite element model. Analyzing the structural strength and stiffness of the boom and the arm by ANSYS, the stresses and the displacements of the working condition are acquired. The main vibrating model is obtained after analyzing the model of the boom and the arm. The boom and arm with rib are analyzed at the same, the results are compared.Finaly, establishing a structure model of the WY22 excavator's working equipment by 3-D design software Pro/E, conducts a analysis of the dynamic, the velocity and acceleration of bucket and the loads of some parts are obtained.The structural strength is to meet the design requirements to be tested and verified by the results of finite element analysis and simulation, the natural frequency of boom,arm and excavator will not be resonance. The boom and arm with rib are better suited the design requirement. The design is reasonable proofed by the dynamic analysis. The research results are to create the conditions for structural optimization of the WY22 excavator's working equipment in the next research.It can define the reasonableness of structure design by using the finite element method and movement simulation to analyze the working equipment of WY22 excavator. The structure design way of this working equipment can attain the advanced level by this analysis in future.
Keywords/Search Tags:hydraulic excavator, working equipment, finite element analysis, dynamic analysis
PDF Full Text Request
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