本論文利用Pro/Mechanica軟體來分析筆記型電腦觸控板按鍵作動行為、應力分析及最佳化分析與改善。本論文分兩個主題：ㄧ、研究按鍵開關位置的擺設對按鍵作動的影響；二、利用靈敏度與最佳化分析功能，求出改善按鍵的影響參數及最佳尺寸，達到最小應力值及減少位移量的研究。
本論文主要分析流程為：(1)首先在Pro/ENGINEER建立幾何模型，並簡化模型及尺寸設定；(2)在Pro/Mechanica中進行分析條件的設定；(3)進行不同開關位置及不同施力點的應力及位移分析，歸納出開關位置對按鍵作動的影響；(4)從區域及全域靈敏度分析了解設計參數對量測值及應力的影響；(5)以最佳化分析得到最佳設計尺寸，並與原始設計做比較呈現改善效果。
本論文之研究提供給機構工程師在類似的結構設計有一個完整的分析與參考模式，並藉由CAD-Pro/ENGINEER與CAE-Pro/Mechanica的整合介面，縮短操作者的學習曲線，並縮短產品開發時間及減少設計變更費用。

This thesis uses Pro/Mechanica to analyze the motion and stresses of notebook’s touch pad button. Two major issues are studied: (1) find the effects of switch’s location to the function of touch pad button and (2) use the modules of sensitivity analysis and optimization to determine an optimal set of design parameters which achieves the requirements of minimal stress and displacement of touch pad button.
The major procedure of CAE analysis in the thesis includes: (1) create Pro/ENGINEER parts and then simplify relevant geometric models, (2) set up the boundary conditions, (3) conduct the stress and displacement analyses for various combinations of loads applied in different positions and different switch locations, (4) carry out local and global sensitivity analyses to find the effects and trends of design parameters onto stresses and displacements, and (5) establish the objective function and constraints for an optimization model so as to find optimal design parameters.
The research results of this thesis set the ground for a design engineer to integrate Pro/ENGINEER and Pro/Mechanica to shorten the time-to-market of a product and reduce the costs incurred from design changes.

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