基于响应曲面的软刚臂结构多目标参数优化

Optimization of Parameters for Soft Yoke Based on Response Surface Anslysis

根据软刚臂单点系泊系统结构几何参数和运动位移特征建立软刚臂结构数学计算模型,推导出水平系泊力与软刚臂结构尺寸之间的关系。基于响应曲面分析对软刚臂结构进行参数优化,经过优化,软刚臂结构整体重量减小21.84%,系统刚度保持良好;同时,软刚臂结构优化后最大靠近与最大远离位移时提供的水平回复力分别提高4.1%和9.66%。优化过程表明:在多目标参数优化设计中,合理选取目标参数并结合正交试验设计,以响应曲面分析为基础,可以减小优化设计计算量。

The mathematical model of soft yoke structure is established based on the structural geometric parameters and motion displacement characteristics,and the relationship between the horizontal mooring force and the structure size of the soft yoke strcture is deduced.On the basis of response surface analysis,the soft yoke structure is optimized.After optimization,the overall weight of the soft yoke structure is reduced by 21.84%and the stiffness of the system is good.At the same time,the horizontal recovery force of the maximum close to the maximum distance away from the maximum distance of the soft rigid arm is increased by 4.1%and 9.66%respectively.The optimization process shows that in the multi-objective parameter optimization design,the rational selection of the target parameters and the orthogonal test design,on the basis of the response surface analysis,can reduce the optimum design calculation.