鞭甩傷害主要發生於低速後撞，此傷害致死率雖然不高，但在後撞事故發生傷害率頗高，臨床上潛伏期長，併發症多，本研究目的為校正一人偶有限元素模型，並用於設計驗證一機構以降低後撞時發生的傷害。
本文一開始詳細介紹後撞發生流程，了解頸椎在後撞發生時的運動，簡單介紹脊椎的生理結構以及後撞中可能承受之傷害；第二章末節介紹碰撞測試的歷史並介紹Biorid II碰撞人偶。BioRID-II人偶常用於後撞測試，其特點在於脊柱，由24個獨立的椎骨結合扭力墊圈、衝擊吸收器及肌肉模擬彈簧使它更具生物擬真性；脊柱安裝在一個矽膠護套裡面，利用插銷與椎體連接。依據其特性設定Biorid II有限元素模型使之進入驗證區間。
第四章開始機構設計，列出現有機構，了解座椅在後撞中防護的設計指標，參考先前研究之摩擦阻尼機構加以改良，摩擦阻尼具有啟動與消能之效果，將之裝置於座椅與滑車之間，輸入NCAP低中高加速度波形，測試其緩衝效果並找出適當之動、靜摩擦力值、正向力以及機構尺寸；設定完成後將Biorid-II裝置於座椅上，調整適當姿勢，依據歐洲新車評價系統(Euro-NCAP)後撞鞭甩測試流程，驗證機構保護效果。

Whiplash injury is kind of injury that seldom causes to death, but usually occurs in rear impact accident. The main object of the study is to calibrate the dummy in finite element model and design a mechanism to lessen the injury during rear impact. Finally, using the calibrated model to test mechanism if it can protect passengers or not.
In the beginning, there is introduction about what happened and how vertebral react during the rear impact. Then, briefly show the structure of vertebral and injury which may be caused during rear impact. In order to calibrate the dummy in finite element model, we research the Biorid II calibration test data Which used to compared with simulation result.

After setting the dummy finite element model, we started to mechanic design .At first, we research some paper to realize how important the seat is, knowing some of main design objects and finally decide to use friction damper which is design by Wu and improve it more efficient to protect passengers . Then, we set the friction damper between seat and vehicle and put the dummy on the seat in right position. At last , based on Euro-NCAP whiplash test protocol to prove that the mechanism can protect passengers.

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