Application of CAE to Virtual Testing of Bicycle Front Fork Test

• Main Authors: Kuo-Jui Tseng, 曾國睿
• Other Authors: Dr. Bor-Tsuen Wang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/79947269358981744694

碩士 === 國立屏東科技大學 === 機械工程系所 === 98 === The bicycle parts need to fulfill the testing criteria before assembly and for sale. The front fork of the bicycle is also no exception. This work aims to apply the computer aided engineering (CAE) technique to develop a virtual testing method to comply with the standard that regulates various kinds of testing for the front fork. This work refers to the European standard, EN14764: City and Traveling Bicycle – Safety Requirement and Test Method, especially for the front fork tests, including static bending, Rearward impact, Bending fatigue, static brake-torque and Repeated brake-torque tests, and performs the corresponding virtual testing by CAE software. First, a city bicycle’s front fork is selected and constructed for its finite element (FE) model that can properly simulate the testing conditions required by the standard. Through the static analysis, the deformation as well as the induced structural stresses for different tests can be analyzed and used to evaluate the front fork that can either pass or fail according to the test requirement. The developed virtual testing technique, especially for the front fork, can predict the structural response subject to the specified mechanical loadings by the test standard and, therefore, can largely reduce the time and cost in producing the test samples for repeated testing base on the trial-and-error method. This work presents the simulation method and evaluation procedure in particular for the front fork testing. The built FE model can be easily modified by varying material properties and geometry for design modification in order to fulfill the test standard. The analytical FE model can be further validated by experimental modal analysis and then be useful for new design consideration. The CAE technique for virtual testing applied to the testing of the front fork is shown promising and can be adopted for other components as well.