汽車變速器齒輪嚙合瞬態(tài)性能分析研究.pdf

1、重慶大學(xué)碩士學(xué)位論文汽車變速器齒輪嚙合瞬態(tài)性能分析研究姓名：常志權(quán)申請學(xué)位級別：碩士專業(yè)：車輛工程指導(dǎo)教師：羅虹20050501重慶大學(xué)碩士學(xué)位論文 英文摘要IIABSTRACTTransmission is one of the key components influencing various performances ofautomobile. Its main part is gear transmission system

2、working in complicatedcondition whose performance will influence the automobile performances directly.Compared with traditional gear design analytical method and finite element staticanalytical method, Gear meshing dynam

3、ic performance analytical method can obtainmore information and analyze the performance of the system more accurately in themeshing process. The transient performance of the five speed gears of thetransmission was studie

4、d in this paper, after the general conditions of studyingdynamics of gears transmission system at home and abroad had been analyzed.In this paper, based on the study of the method of applying the boundarycondition and th

5、e load and defining the contact between the gears etc key problems,the elastic contact FEA method was used to build up the full three- dimensional FEAmodel of the gear mesh system, and then the model was calculated on th

6、e computerto simulate the meshing between the gears. In the calculated result, the displacement,velocity an acceleration information of all of the nodes and the stress and straininformation of all of the elements can be

7、obtained easily, which lead studying thetransient performance of gear meshing is more comprehensive and easily.In this paper, the calculated result was analyzed in details and then the stressdistribution and the vibratin

8、g condition and the change of them everywhere on thegear were obtained during the meshing course. And the transient stress distributionalong the breadth of the tooth and depth of tooth were further studied.Then the dynam

9、ic analytical method was used to analyze the influence of thetransient performance caused by the change of structure parameter of the gear andprofile modification. By calculating, the result showed the changing tend caus

10、ed bythe change of structure parameter distinctly and the transient performance of themodified gear was improved greatly, and which make out that the dynamic analysismethod can guide choosing the structure parameter and