- 學位論文
使用有限元素法分析防爆門之結構強度
Analysis of Structural Strength for Blast Doors Using Finite Element Method
摘要
本研究的目的是分析民用型多層防爆門的結構強度，經由250g TNT炸藥至於防爆門前側中心位置進行接觸爆炸之後所造成的影響，為了模擬出防爆門接觸爆炸過程，利用專門模擬爆炸非線性動態的分析軟體LS-DYNA，經由LS-DYNA強大的流固耦合分析能力以及選取適當材料參數，對多層防爆門進行結構強度分析，因為接觸爆炸導致防爆門承受瞬間極大的爆壓，所以防爆門第一層鋼板必須達到一定的厚度，然而民用型防爆門必需考慮到輕量化的問題，為了不影響防爆門整體厚度以及重量，模擬結果顯示，正六邊形孔蜂窩梁骨架的應力值最小以及重量最輕，與原本空心管骨架相較之下減少了31.79%，重量減少了15.43%，明顯的，本研究證實，正六邊形孔蜂窩梁骨架之防爆門能夠有效地達到輕量化及最小化應力的設計目的。
並列摘要
The purpose of this study is to analyze the structural strength of the civil blast door with multilayer. To determine the contact explosion effect of the blast door, this study employed a software of the LS-DYNA, under 250g TNT explosive exploded, to simulate this process. This study selected appropriately the material parameters to analyze the structural strength of the blast door with multilayer. The contact explosion easily generates instant explosion pressure, so the thickness of the first layer of the blast door must be enough. However, it is important to consider the lightweight of material for civil blast doors. This study modified the frame of the blast door to achieve the above-mentioned propose. Simulation results showed that the blast door with regular hexagon frame achieved the design of the lightweight and the minimal stress. As compared with the original hollow frame of the blast door, its minimal stress and weight reduced 31.79% and 15.43%, respectively. Obviously, this study demonstrated that the blast door with regular hexagon frame has the lightweight and the minimal stress, as compared with the blast door of other types.
參考文獻
延伸閱讀
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