Motion Simulation and Structure Analysis of Ball Joint of Drive Shaft for Automobile

• Main Authors: Leu, Shaw-Shih, 呂紹詩
• Other Authors: Cheng, Pi-Ying
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/67422953302116310972

碩士 === 國立交通大學 === 工學院碩士在職專班精密與自動化工程組 === 98 === This research proposed a practical and useful method which apply Finite Element Analysis to investigate the difference of stress distribution between the constant velocity joint of the BJ type（6 ball CV Joint）and EBJ type（8 ball CV Joint）. One motivation of the research is to confirm the possibility of cost saving in material and production of C.V.Joint, and to get the better superiority in design at the Automobile Chassis space without reducing the strength and durability. This research adopted SolidWorks cooperating with Finite Element Aanalysis system（COSMOS Works）to build the geometric model and solve the stressed distribution of the components of Ball Joint assembly on the driveshaft. The C.V. Joint models in the study are similar models as BJ and EBJ type of NTN product. On behalf of the iterative parameter optimized process, we can conclude that the model of EBJ with less weight could be a more competitive C.V. Joint product than BJ type. As shown in the analysis result, we have investigated the difference of stress distribution between BJ type and EBJ type, and the weight in EBJ type is 20% smaller than BJ type. The Stress at the contact point between EBJ ball and housing is smaller than that of BJ ball, so we can hypothesize that the temperature rise on the housing of the EBJ type will be smaller than that of BJ type, and the conclusion is similar with NTN tested result. The research proposes a model-analysis investigation concurrent design process and the new EBJ type of C. V. Joint has been evaluated and can be concluded that it could be a more competitive product with much more benefit on less weight, smaller size and less temperature rise than that of BJ type.