水下浮式结构优化设计及力学特性试验

Optimization design and experimental research on mechanical properties of underwater floating structure

针对大长细比浮式结构水下工作时存在涡激振动、结构稳定性差、动态特性明显等问题,分析计算水下浮式结构力学特征、动力学特性,寻找解决减小水下浮式结构涡激振动效应的方法。同时采用物理模型试验方法验证研究成果的准确性。研究结果表明,采用合理导流板结构形式,可有效降低水下浮式结构涡激振动效应。该理论分析与仿真计算方法可有效应用于水下浮式结构优化设计。

In view of the existence of vortex-induced vibration,poor structural stability and obvious dynamic characteristics of the high fineness ratio floating structures under water,the mechanical characteristics and dynamic characteristics of the floating structure under water are analyzed and calculated,so as to find a way to reduce the vortex-induced vibration effect of the floating structure under water.At the same time,physical model test is used to verify the accuracy of the research results.The results show that the vortex-induced vibration of underwater floating structures can be effectively reduced by using reasonable baffle structure.The theoretical analysis and simulation method can be effectively applied to the underwater floating structure optimization design.