| Summary: | 碩士 === 國立臺北科技大學 === 製造科技研究所 === 105 === It is a design practice to enhance the radial rigidity of bicycle rims by change rim’s profile structure like the placement of ribs inside the rim. This study will investigate the mechanical properties and design parameters of the bicycle rim with and without ribs design. First of all, bicycle rims under static load and dynamic low-speed impact were analyzed through the finite element technique to investigate the effects of ribs on radial rigidity of rims.
Then the Taguchi method used to try to find the best design parameters, control factors, including the rim walls, thickness of the ribs, spacing of the ribs opening and shapes of the ribs. To reduce the amount of deformation as a goal to find the best design parameters. In this case study, the results show that the rim within ribs can reduce the deformations about 10% under the static load of 100N. At low-speed impact, it can reduce about 5% deformations. Experimental results through Taguchi method, find the best combination for triple wall, 1.5mm of the rib’s thickness, 21mm of the rib’s spacing opening and U-shaped rib. The results show that the optimal design parameters of the new bicycle rim can reduce about 43.7% deformations per gram.
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