Response of reinforced concrete (R.C.) plates subjected to blast loading is numerically investigated through a hybrid discretization combining FEM and smoothed particle hydrodynamics (SPH). Initially, the structure is discretized via Lagrangian finite elements. If any element undergoes large deformation, it is replaced by particles. Interaction between FEM and SPH is established through a transition layer. Three different idealizations of the actual blast event involving multiphase continuum (explosive, air and structure) is considered, viz. Load Blast Enhanced (LBE) where only the structure is modeled and empirically calculated blast pressure is applied to the structure; Multi-Material Arbitrary Lagrangian Eulerian (MM_ALE) where the explosive, air and structure all are explicitly modeled; and coupled LBE & MM_ALE where the structure is encapsulated in a receptor and blast pressure is applied on the receptor. Simulations are performed to investigate the effects of various parameters such as standoff distance, boundary conditions etc., on the overall response of the structure.

通过结合有限元和平滑粒子流体动力学（SPH）的混合离散化，数值研究了爆炸荷载作用下的钢筋混凝土（RC）板的响应。最初，该结构通过拉格朗日有限元离散化。如果任何元素发生大变形，则将其替换为粒子。FEM和SPH之间的交互是通过过渡层建立的。考虑了涉及多相连续体（爆炸，空气和结构）的实际爆炸事件的三种不同的理想化，即。荷载爆炸增强（LBE），仅对结构建模，并根据经验计算爆炸压力应用于结构；多材料任意拉格朗日欧拉（MM_ALE），其中炸药，空气和结构均已明确建模；以及耦合的LBE和 MM_ALE，其中结构封装在接收器中，并且对接收器施加冲击压力。进行仿真以研究各种参数（如间距，边界条件等）对结构整体响应的影响。