东北水利水电2026，Vol.44Issue(4)：41-44,54,5.
基于流固耦合作用的水下夯锤选型优化研究
Study on selection optimization of underwater tamper based on fluid-structure interaction
摘要
Abstract
This study adopts the LS-DYNA dynamic finite element method to analyze the hydrodynamic characteristics and flow drag variation laws of two typical underwater tampers:cylindrical and truncated-cone types.The simulation results demonstrate that,under constant hydrostatic pressure conditions,there is a significant correlation between the tamper mass and its motion parame ters.When the drop distance of the tamper increases gradually from 2.5 m,the maximum dynamic pressure values of both cylindrical and truncated-cone tampers increase systematically with the drop distance.Specifically,the pressure variation gradient at each monitoring point of the truncated-cone tamper is 1.3-1.5 times that of the cylindrical tamper,while the increment of penetration depth for both tampers presents a diminishing marginal characteristic.With the increase of the tamper size multiple,the tamping efficiency im proves progressively.However,when the tamper size multiple reaches 2.5 times,the increasing amplitude of the tamping efficiency decreases gradually.关键词
水下夯锤结构优化/计算流体动力学/LS-DYNA数值模拟/绕流阻力特性Key words
underwater tamper structural optimization/computational fluid dynamics/LS-DYNA numerical simulation/flow-induced drag characteristics分类
建筑与水利引用本文复制引用
蒋鹏飞..基于流固耦合作用的水下夯锤选型优化研究[J].东北水利水电,2026,44(4):41-44,54,5.基金项目
辽宁省农业科技攻关研发项目(20220615) （20220615）
