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《Journal of Chongqing University》 2009-06
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Numerical simulation of the internal dynamic excitation of a spiral bevel gear transmission

LIN Teng-jiao,YANG Yan-ni,LI Run-fang,LI Ying-chao (State Key Laboratory of Mechanical Transmission,Chongqing Univercity,Chongqing 400030,P.R.China)  
A 3-D geometry model and a static/dynamic finite element(FE) model of a spiral bevel gear transmission are established.Using ANSYS software,the mesh stiffness excitation of a tooth pair is calculated via the static contact FE method.Using LS-DYNA software,the approach position and relative velocity between the driving and driven gears are determined and used to analyze the impact excatation of the tooth pair.The error exaction is described by a half-sine function;the internal dynamic excitation of a spiral bevel gear transmission then can be obtained based on the acquired stiffness excitation,error exaction and impact exaction.The results indicate the following: the gear torque has a significant effect on impact characteristics,while the impact time is independent of the impact velocity;the impact force force is directly proportional to the impact velocity;the backlash and the error of crossed axes angle lead to the delay of the impact time and increase of the impact force;the backlash has considerable influence on lag time,while the error of crossed axes angle has noticeable influence on the impact force amplitude.
【Fund】: 国家科技支撑计划资助项目(2006BAF01B01-03);; 重庆市重大科技专项资助项目(CSTC 2007AB3030);; 重庆市重点科技攻关项目(CSTC 2006AA3010-6)
【CateGory Index】: TH132.41
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