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題 名 | 大理岩接觸爆炸實驗與數值模擬=The Simulation of Marbles Subjected to Contact Explosion |
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作 者 | 陳棋杰; 洪正偉; 陳駕譽; 王耀德; | 書刊名 | 黃埔學報 |
卷 期 | 63 2012.10[民101.10] |
頁 次 | 頁271-278 |
分類號 | 595.96 |
關鍵詞 | 大理岩; 接觸爆炸; 數值模擬; Marble; Contact explosion; Numerical simulation; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究應用LS-DYNA 模擬大理岩受50g 的C-4 炸藥接觸爆炸結果發現,以文獻中 大理岩最大及最小單壓強度進行參數調整,成坑直徑的差異在10.34%以內;而調整張 力強度、破壞包絡線、狀態方程式及損傷模式參數,不影響模擬的成坑直徑。當侵蝕條 件設定失效剪應變為0.00075 時,可獲得較佳之模擬成果,成坑直徑誤差在5%以內; 而以軟體內定參數進行模擬時,成坑直徑誤差則在10%以內。 |
英文摘要 | LS-DYNA finite element software was applied in this study. The simulation results of marbles subjected to contact explosion of 50g C-4 explosive reveals that the errors of crater diameters are within 10.34% by adjusting parameters of maximum and minimum uniaxial compression strength from references. However, the diameter of crater is not affected by adjusting tensile strength, Mohr-Coulomb curve, equation of state and damage models. Failure shear strain set to 0.00075 under erosion condition can obtain better results. Besides, the error of diameter for crater is within 5%, but within 10% by applying the default value of software. The error of depth for crater is beyond 100% from different simulation parameters. |
本系統中英文摘要資訊取自各篇刊載內容。