宁夏大学学报（自然科学版）2024，Vol.45Issue(2)：129-137,143,10.
面向薄壁复合梁结构的数据驱动计算均匀化方法研究
Data-driven Computational Homogenization Method for Thin-walled Composite Beam Structures
摘要
Abstract
A research on the data-driven computational homogenization method for thin-walled composite beam structures was conducted,and an efficient data-driven multi-scale model based on model reduction technology was developed.Firstly,in terms of macro-micro scale correlation calculations,the data-driven computational homogenization method decouples the traditionally nested macro-micro scale calculations.It is replaced with a micro-offline and macro-online scheme,where an offline database of stress-strain equivalence for representative volume elements drives the online computational efficiency.Secondly,for the macroscopic model,a reduced-order model of thin-walled composite beam structure is constructed based on Carrera's unified formula,which significantly reduces the degrees of freedom and the number of integration points.Finally,in terms of data searching,a hierarchical data searching scheme is adopted to replace the exhaustive data searching method to reduce the data volume per search.The study shows that the data-driven computational homogenization method combined with model reduction techniques can significantly improve the computational efficiency while ensuring accuracy,providing a reliable and efficient tool for the rapid prediction of multi-scale mechanical behaviors of thin-walled composite beam structures.关键词
数据驱动计算均匀化/薄壁复合梁结构/Carrera统一理论/分层数据搜索Key words
data-driven computational homogenization/thin-walled composite beam/Carrera's unified formula/hierarchical data searching method分类
建筑与水利引用本文复制引用
杨义宸,回彦川,黄群,李荟翠,胡衡..面向薄壁复合梁结构的数据驱动计算均匀化方法研究[J].宁夏大学学报（自然科学版）,2024,45(2):129-137,143,10.基金项目
国家重点研发计划重点专项基金(2022YFE0113100) （2022YFE0113100）
国家自然科学基金重点项目(11920101002) （11920101002）
国家自然科学基金青年科学基金项目(12102269) （12102269）
辽宁省科技基金面上项目(2022-MS-402) （2022-MS-402）
沈阳市科技局留学回国人才项目(RC230011) （RC230011）
