大尺度楔形体板架钢模落体试验和仿真研究

Experiments and numerical investigation of water entry of large-scale steel wedge models

采用模型试验和数值仿真的方法对不同刚度的大型楔形体板架钢模入水砰击进行了比较研究。建立了包含空气、水和弹性板架完全耦合的三维有限元模型,同时计及重力的影响。文中还对不同高度和刚度的弹性板架入水砰击进行了广泛的数值仿真,并与模型试验进行了比较。结果表明:弹性效应对楔形体的砰击压力和结构应力响应有着不同程度的影响。

Based on model test and numerical simulation, models were studied. A three-dimensional coupling finite water entries of large-scale elastic steel wedge element model including air, water and elastic grillage was built up, considering the effect of gravity synchronously. Load cases including different stiffened panels from different height impacting the water were calculated, which were compared with model test results. The results show that structure stiffness has important effect on structure responses while it has little effect on slamming pressure under same entry velocities.