海上风电平台大尺寸肘板结构形状优化方法  

Shape Optimization of Large Bracket of Offshore Wind Turbine Platform

作　　者：何力 张延辉 杨俊[1] HE Li;ZHANG Yan-hui;YANG Jun(Offshore Oil Engineering Co.Ltd.,Tianjin 300451,China)

机构地区：[1]海洋石油工程股份有限公司,天津300451

出　　处：《船海工程》2022年第4期116-119,共4页Ship & Ocean Engineering

基　　金：海洋石油工程股份有限公司科技项目(E-0820P006)。

摘　　要：以某风电平台大尺寸肘板为例,通过在极坐标系下选取适当的优化参数,对肘板的外形轮廓进行参数化建模,解决以往优化方法难以对结构不规则外形进行参数化建模的问题,使用共轭梯度法形成共轭方向序列进行优化迭代求解,对肘板进行结构优化,结果表明,优化得到的新型肘板结构形式可以有效降低热点应力,提高结构疲劳寿命。A new shape optimization method for large bracket of offshore wind turbine platform was proposed.By selecting suitable optimization parameters in polar coordinates,the contour of bracket was parameterized to improve the shortcoming of previous optimization algorithms which are difficult to parameterize the irregular structural shape.By using conjugate gradient method to form conjugate direction sequence optimization iteration,the structure shape of bracket could be optimized.The result showed that the new bracket structure can effectively lower the local stress concentration,reduce the maximum hot spot stress and increase the structural fatigue life.

关 键 词：肘板 形状优化 参数化建模 共轭梯度法 应力集中 

分 类 号：U661.4[交通运输工程—船舶及航道工程]