基于响应面分析法的虚拟锚系剖面浮标结构优化设计  

Structural Optimization Design of Virtual Anchoring Profiling Floats Based on Response Surface Analysis

作　　者：刘志刚 LIU Zhigang(Qingdao JARI Industrial Control Technology Co.,Ltd,Qingdao 266400,China)

机构地区：[1]青岛杰瑞工控技术有限公司,山东青岛266400

出　　处：《海洋技术学报》2022年第4期61-71,共11页Journal of Ocean Technology

摘　　要：针对目前虚拟锚系剖面浮标的设计多集中在控制算法领域,在结构设计上多为直接性试验设计的问题,为简化试验流程、降低成本,针对某款虚拟锚系剖面浮标进行结构优化设计。首先对浮标水下2000 m工况进行有限元静力学仿真分析,得到对其应力和变形影响较大的结构参数,设置浮标壳体1、壳体2、壳体3、肋板1、肋板2的厚度为变量,对浮标进行参数化建模,将变量参数值进行区间约束,设置重量、最大应力和最大变形为优化目标,对浮标模型进行响应面优化设计。经过分析得到53组变量参数组合,筛选得到最优化的变量组合。利用优化前后浮标的结构参数,对浮标入水工况进行模拟流体压力分析,检测浮标结构设计合理性,对比显示优化后浮标的最大变形量和最大应力皆有所增大,但仍符合其材料设计要求。最终,参数化建模优化后的浮标重量减少了6.01%,最大应力降低了43.83%,最大变形量增加了0.01325 mm,变形量仍旧符合设计要求。优化过程减少了实际试验次数,降低了生产成本,对虚拟锚系剖面浮标及深海设备的结构优化设计有一定参照意义。At present,the design of virtual anchor system section buoy is mostly concentrated in the field of control algorithm,and the structural design is mostly direct experimental design.In order to simplify the test process and reduce the cost,the structural optimization design of a virtual anchor system section buoy was carried out.Firstly,using the static simulation analysis on the buoy under the condition of 2000 m underwater,and obtained the structural parameters that have a great impact on its stress and deformation.Set the thickness of buoy shell 1,shell 2,shell 3,rib 1 and rib 2 as variables,the buoy was parametrically modeled,the variable parameter values were subject to interval constraints,set the weight,maximum stress and maximum deformation as the optimization objectives,the response surface of the buoy was optimized.After analysis,obtained 53 groups of variable parameter combinations,and selected the optimal variable combination.Using the structural parameters of the buoy before and after optimization,carried out the simulated fluid pressure analysis of the buoy en-tering the water condition,to detect the rationality of the buoy structural design.The comparison shows that the maximum deformation and maximum stress of the buoy after optimization have increased,but still meet the material design requirements.Finally,the weight of the buoy after parametric modeling optimization is reduced by 6.01%,the maximum stress is reduced by 43.83%,and the maximum deforma-tion is increased by 0.01325 mm.The deformation still meets the design requirements.The optimization process reduces the actual test times and reduces the production cost,which has a certain reference significance for the structural optimization design of virtual anchor profile buoy and deep-sea equipments.

关 键 词：虚拟锚系剖面浮标 有限元分析 响应面优化设计 参数化建模 流体压力分析 

分 类 号：TH62[机械工程—机械制造及自动化]