| Summary: | 碩士 === 國立交通大學 === 機械工程系所 === 104 === This research aims to establish an analytical approach for investigating the swing and impact behaviors of composite badminton racket. The finite element layer by layer model based on ANSYS commercial code was generated in terms of geometric configuration and material properties of badminton racket to characterize the bending behaviors and modal analysis. Through the equivalence of the above properties, the equivalent finite element model was created. Combined with the string model, the equivalent model was then employed to examine the coefficient of restitution in terms of different string tensions. It seems that when the string tension is 24 pounds, the racket demonstrates the highest value of coefficient of restitution. In addition, the first ply failure of the badminton racket was explored associated with different tensions using Tsai-Wu failure criterion.
In the dynamic analysis, the impact behaviors of badminton racket were measured using either high speed camera or micro-electrical sensors. Together with the FEM model, the responses of the badminton racket with string model interacting with the badminton shuttle were investigated. It was found the measured signal with the proposed FEM can be adopted to simulate the trajectory of the badminton racket and be further adopted for the future design of the badminton racket.
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