羽球選手會依據其自身經驗來調整球拍上穿線的磅數，然而羽球拍上每一條球線如何影響拍床的力學性質值得深入探討。由於碰撞是個複雜的機制，因此需要利用電腦模擬分析羽球拍床的運動機制。本研究目的為剖析有限元素法應用在羽球拍床建模的過程，並深入探討拍床線張力的力學分析。
本研究利用3D繪圖軟體SolidWorks建立拍床模型(包含衝頭與上下交織的22條豎線與21條橫線)，再深入剖析有限元素套裝軟體ANSYS Workbench模擬拍床機械性質的設定，並透過材料試驗機進行靜態力學實驗來對FE模型進行驗證。結果顯示力學實驗與有限元素分析兩者作用力－位移關係之斜率誤差為7%，具有高度信效度，因此本研究建立的有限元素模型可運用於模擬羽球拍床受外力作用的力學行為。此外，將模型延伸探討羽球拍床上的磅數遞減與未遞減的力學分析，結果發現在拍床的最大主應力分析下，在球頭落點相同時，Model 1 (磅數未遞減)與Model 2 (磅數遞減)兩者數值相近，但在網線端面上下左右四區域的各別合力(對框反作用力)分析下，Model 1在四區域的各別合力值均比Model 2 大，因此在球拍穿線結束後的撞擊情況，磅數遞減的方法可以有效降低網線對拍框的作用力，且有助於增進拍框的耐用度。

The tension of the strings on a badminton racket can be adjusted by players according to their personal experiences. The best way to execute such an adjustment remains unclear, which requires development of computer simulation models because of its complexity. The present study attempted to build a finite element (FE) model to investigate the mechanical properties of the string-bed of a badminton racket upon ball impact. To ensure the correctness of the string tension during the test, an extra experiment for measuring tension loss over time was first conducted. An FE model was then developed to investigate the effect of having non-uniform string tension of the string-bed upon impact. The model included a simplified string-bed consisting of 22 vertical and 21 horizontal strings, and a half ball for impact simulation. They were built with SolidWorks and was verified by using a static loading test with the same mechanical properties with the Material Test System (MTS). A 5 mm displacement was applied to the ball to simulate impacting on the string-bed. The results revealed stress relaxation of the badminton string bed during the first two hours after stringing. The present realistic FE modeling was validated by the static loading test due to reasonable agreement in time-loading relation. Finally, the non-uniform string tensions of the string bed model could effectively lower the reaction force at the boundaries of the strings and enhance racket frame endurance.

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