現今的人工關節大多數都使用鑄造與切削加工，近年來開始紛紛以鍛造成形方式進行研究。本文將以人工膝關節脛骨之外型為例，設計鍛造模具組，實驗規劃為以熱間鍛造對圓棒材料做鍛粗之加工。本研究藉由電腦輔助設計(CAD，computer aided desing)與電腦輔助工程(CAE，computer aided engineering)的方法，並透過有限元素分析法(FEM，finite element method)套裝軟體DEFORM-3D來進行人工脛骨模型之模擬，經由設定製程參數觀察成形之狀況，在實際開模前以模擬可減少半成品之發生，改善傳統之試誤法(Trial and Error)。藉由人工脛骨模型鍛造製程模擬之分析，可獲得加工時所需之加工負荷、材料流動、應力與應變分佈，並將實驗結果與數值模擬比對，以達到數值模擬分析之可信性。盼此研究之成果能夠提供業者參考，累積人工關節鍛造加工之經驗。

Nowadays, many prostheses are made of casting and cutting. In recent years, forging was often used in researches concerning this field.
In this research, the shape of a tibial prosthesis was used as a sample for designing a forging die under hot upset forging process. For the method of this research, CAD、CAE and the DEFORM-3D(FEM) were used to start the model’s simulation. By the process of setting the parameter, the boundary condition was observed. The simulation can decrease the risk of half-finished products, and improve the original try and error method. By the artificial tibial model forging process simulation, the punch load, material flow and stress/strain distribution was obtained. Finally the experimental results of which were compared with the simulation results. The results of both after compensation were agreeable.
This research could be applied to improving artificial tibial forging technology for industry.

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