Abstract This paper proposes a local mesh reconstruction method designed for generating the finite element (FE) analysis model in the context of simultaneous layout and scantling optimization. The FE model is automatically built by inheriting the topology and property information of the prepared initial finite element (FE) analysis model. A framework of optimization integrating the mesh reconstruction process is set up through the ISIGHT platform based on MATLAB code and MSC.PATRAN&NASTRAN. The capability and effectiveness of the method are demonstrated on the optimization of a typical internal turret area for the mooring system of FPSO. The thickness of plates and the layout of web-frames are optimized to minimize the structural weight of the turret area subjected to yield stress constraints. The optimization result presents the potential application of the proposed method in layout and scantling optimization of the FPSO internal turret area structure.

中文翻译：

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FPSO内部转塔区域结构布局及尺度优化的局部网格重建方法

摘要 本文提出了一种局部网格重建方法，用于在同时布局和尺寸优化的背景下生成有限元（FE）分析模型。FE 模型是通过继承准备好的初始有限元 (FE) 分析模型的拓扑和属性信息自动构建的。基于MATLAB代码和MSC.PATRAN&NASTRAN，通过ISIGHT平台建立了一个融合网格重建过程的优化框架。通过对FPSO系泊系统典型内部转塔区域的优化，证明了该方法的能力和有效性。板的厚度和腹板框架的布局经过优化，以最大限度地减少受屈服应力约束的炮塔区域的结构重量。