虛擬實境應用於結構動力分析模擬

Abstract

近年來，3Ｄ電腦繪圖技術發展快速，虛擬實境的應用能大幅提升使用者編輯複雜資訊的效率。本研究之目的在設計一個有互動式及視覺化等特性之虛擬實境來呈現的結構動力分析系統，讓使用者能以最有效率的方式設計建物、並且模擬建物在地震力作用下的動力反應。 本模擬系統在視窗環境作業中，結合物件導向程式設計以及3Ｄ電腦繪圖技術來開發，工具為Microsoft Visual Studio .NET 2003，使用Win32作為API（Application Program Interface）開發環境，使用者可利用下拉式選單以及彈出視窗等完成正確的設計建物步驟，以及採用DirectX 9.0為開發3Ｄ電腦繪圖應用程式的API，讓設計流程的資訊視覺化，建物的動力模擬顯示更具有真實性以及互動性。在建物設計的過程中，視窗畫面可即時顯示各項設計步驟的視覺呈現；在動力模擬的過程中，使用雙視窗比較相同建物在不同隔減震控制裝置下所發生的動力反應，以及動態呈現放置不同位置、種類的感測器所量測到的不同資料反應圖。

In recent years, 3D computer graphics technology has been developed rapidly. The application of virtual reality (VR） is able to enhance the efficiency of editing complicated information for design such as behavior of structures. The purpose of this thesis is to develop a system for simulating dynamic analysis of structures displayed by VR with the capability of interaction and visualization. Thus, the interactive VR system enables users to design structures with more efficient tool and to simulate the 3D dynamic responses of buildings under earthquakes. This system is designed and developed using the object- oriented and 3D computer graphics techniques in the Microsoft Windows environment, and is implemented using Microsoft Visual Studio .NET 2003. Win32 program design is used to develop the Application Program Interface (API), and it also supports various user-interfaces, such as pull-down menus and pop-up menus to guide the user to run the system easily. DirectX 9.0 is used to develop the API of 3D computer graphics for information visualized, and the dynamic simulation of structures will be displayed smoothly and have more efficiency in interaction. During the process of dynamic simulation, a window is designed to display and compare with different control device, and display the data diagram for the different placement and different kind of the sensor in real time.