本研究基於目前常見之電腦輔助工程軟體架構，提出一嶄新之功能架構，藉此提供電腦輔助設計軟體對工程迭代設計之輔助效果。目前常見之電腦工程輔助軟體，常將其架構以前處理、分析計算、後處理等三項以區分，在此架構下，工程師需以1)前處理建模、2)分析計算、3)後處理資料評估及4)修正模型重新進行分析之迭代流程重複進行工程分析，直至有滿意結果。其中，步驟1~3在電腦輔助設計軟體之協助下進行，而步驟4則由軟體使用者以人力進行。本研究致力於發展一將迭代設計之考量納入軟體架構之輔助分析軟體，期望藉由軟體輔助下，可有效降低工程師進行迭代設計之負擔，使其可致力工程設計之考量。
本研究以物件導向程式語言C++，配合1)建立圖形化使用者介面(Graphical User Interface, GUI)所使用的Qt類別庫、2)視覺化呈現用的VTK(Visualization Toolkit)以及3)固體力學計算分析所使用的ESFM ( Essential Software Framework for Meshfree Methods)，以進行原型軟體之開發。軟體之架構設計，藉由設計模式(design patterns)以達成其易維護及可擴充之軟體特性。本研究中對於迭代設計所建議的軟體需求，如模型管理功能、模型追蹤修訂、模型自動存檔及分析結果之比較，皆在本研究所提出之軟體原型中被完成，期望其能在未來的電腦輔助工程軟體對於迭代分析之開發及支援有所貢獻。

This work proposes new requirements for computer-aided iterative-design software to help its users throughout their iterative design processes. This design process is partially aided by most modern computer-aided engineering softwares on 1) pre-processing for preparing computer models, 2) calculation for solving unknown variables, and 3) post-processing for visualizing computed results. However, design processes always involve iterations of designs. New designs are often derived from or inspired by existing designs. Functionalities for aiding or inspirning the development are missing from today’s computer-aided software. This research discusses new functional requirements for supporting this iterative-design process, and these requirements are implemented in prototype software to show their feasibility. It is expected these new requirements can help engineers throughout their iterative-design process, allowing them to perform designs more efficiently and work more effectively.
The implemented prototype software uses objected-oriented programming language C++ with 1) Qt class library for creating graphical user interface (GUI), 2) Visualization Toolkit (VTK) for creating visualizing computational results, and 3) an essential software framework for meshfree methods (ESFM) for performing analyses in solid mechanics. The design of software is aided by design patterns to create maintainable and extensible software architecture. Software requirements proposed in this research for supporing the iterative design process such as management of computer models, tracking model mofidications, automated file saving, and comparing computational results are fulfilled in the prototype software. It is hoped this work inspires future generations of computer-aided engineering software to support the iterative-design process.

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