抗屈曲轻质带筋薄壁筒体结构智能优化设计  

An Intelligent Optimization Design Method for Anti-buckling and Lightweight Thin-walled Stiffened Cylinder Structures

作　　者：赖章龙 陆宇帆 周明东 金隼[1] LAI Zhanglong;LU Yufan;ZHOU Mingdong;JIN Sun(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《机械设计与研究》2024年第2期132-138,共7页Machine Design And Research

基　　金：国家重点研发计划(2021YFB1715400);国家自然科学基金(52075321)资助项目。

摘　　要：提出了一种面向带筋薄壁筒体结构的智能优化设计方法,用于自动化设计满足抗屈曲性能要求的轻量化带筋薄壁筒体结构。基于柱壳曲面几何分割、梁壳单元耦合方法,建立了正置正交、斜置正交及等边三角形三类典型筋条布局的带筋薄壁筒体结构全自动参数化仿真模型,开发了带筋薄壁筒体线性屈曲高效率、自动化仿真流程;基于神经网络代理模型的优化方法,实现了带筋薄壁筒体结构特征参数优化。设计案例表明,该设计方法可在保证筒体抗屈曲性能满足服役要求的前提下,有效减少整体结构质量,为薄壁筒体结构开发提供高效的设计方法。In this work,an intelligent optimization design method for thin-walled stffened cylinder structures is proposed to automatically design lightweight thin-walled stiffened cylinder structures with anti-buckling performance requirements.Based on the geometric segmentation of cylindrical shell surface and the coupled finite elements of beams and shells,the automatic parametric simulation models of thin-walled stiffened cylinder structures are established for three typical types of stffener layout:rectangular orthogonal,oblique orthogonal and equilateral triangle,and the high-efficiency and automatic simulation process of the linear buckling of the thin-walled stiffened cylinder is developed.Based on the optimization method of neural network surrogate model,the optimization of structural feature parameters of thin-walled stiffened cylinder is realized.The design case shows that the proposed method can effectively reduce the overall structural mass while ensuring the anti-buckling performance of the cylinder to meet the service requirements,and provide an efficient design method for the development of thin-walled cylinder structures.

关 键 词：带筋薄壁筒体 自动化建模 抗屈曲优化 结构轻量化 

分 类 号：TH122[机械工程—机械设计及理论]