本研究透過小藥量爆炸實驗及運用LS-DYNA 軟體之流固耦合數值模擬，針對鋼筋 混凝土結構於室內爆炸狀況下之結構物行為進行研究。實驗部分在陸軍工兵學校支援 下，透過不同藥量對鋼筋混凝土結構物進行內部爆炸實驗。經由實際爆炸實驗顯示，在 室內爆炸情形下，爆炸造成之炸坑大小及深度與炸藥重量及密度相關，炸藥本身密度越 大，造成炸坑面積及深度越大，炸藥量越大造成炸坑面積及深度亦越大。模擬結果顯示， 運用ALE 流固耦合算法與剪應變0.003 侵蝕條件，雖可模擬鋼筋混凝土結構於小藥量室 內爆炸狀況下之坑洞，但混凝土坑洞直徑誤差最大為22%深度則達38%。

The objective of this study is to simulate and validate Arbitrary-Langargian- Eulenian (ALE) Algorithm of LS-DYNA software, by conducting experiments of Reinforced concrete structures subjected to internal explosion. All experiments were conducted in Chinese Army Engineer School, and different amounts of explosives C-4 were used for same structure size. Experimental Results show that crater size caused by internal exlposion was affected by esplosive weight, density, and shape. The crater size is larger when explosive density is higher, or when explosion weight is larger. Numerial Results show that although ALE algorithm with erosion criteria of shear strain 0.003 can simulate crater formed by internal explosion in reinforced concrete structure, diameter of crater has an error of 22%, and depth of crater has an error of 38%.