129 - Research on the improvement of riding comfort for motorcycles
Xu Z., Zhang Z., He Y., Zhou K., Luo C.
Abstract
The frame is a core part and is important for the motorcycle riding comfort. In this paper, first, the modal analysis of the frame and the frame with engine are completed. Then, the objective evaluation method for motorcycle riding comfort is established by which to evaluate the riding comfort of a motorcycle, and an improvement project is put forward combing the character of the handle vibration. The finite element model is set up with NX3.0 & the pre and post processing soft (MSC.PATRAN), and then the free modal analysis is completed by MSC.NASATRAN. The experimental analysis of the frame and the frame with engine are completed with the LMS modal analysis testing system. The results show that the computation modes are very close to the experimental modes, so the finite element modeling is correct and accurate. The results also show that the engine has great effect on the modal characteristic. The analysis shows that there is no resonance between the frame with engine and the impacts while motorcycle riding normally. In this dissertation, based on ISO 2631 & 5349, combing the character of motorcycle vibration, the evaluation method for motorcycle riding comfort is established. The analysis program is compiled with MATLAB. The riding comfort of a motorcycle is evaluated by the road running test. The vibration of the handle is worse. The modal analysis of the handle is reached by the computation method and the experimental method. The results show that the modal frequency of handle while restricted is identical with the engine impact while velocity in common use. Based on the modal analysis, an improvement project to increase the first modal frequency of the handle is put forward. The results of the road test show that the improvement project improves the vibration of the handle evidently.
Citation
Xu Z.; Zhang Z.; He Y.; Zhou K.; Luo C.: Research on the improvement of riding comfort for motorcycles, CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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