沈阳航空航天大学学报2026，Vol.43Issue(1)：1-8,8.DOI:10.3969/j.issn.2095-1248.2026.01.001
基于热力等效模型的波纹夹芯板热颤振计算
Thermal flutter calculation of corrugated sandwich panels based on the thermo-mechanical equivalent model
摘要
Abstract
To efficiently predict the dynamic stability of integrated thermal protection systems under aerodynamic heating environment,a thermal flutter calculation method for corrugated sandwich panels based on a thermo-mechanical equivalent model was proposed,aiming to enhance the computational efficiency of finite element analysis.First,the homogenization theory was applied to approximate the core layer as a single layer of orthotropic material,thereby simplifying the model.Second,the proportion of the areas occupied by the web and the insulating material was redefined to increase the characteristic size of the equivalent area,thereby reducing the number of finite element grids while ensuring the accuracy of the temperature gradient.Finally,based on the developed thermo-mechanical equivalent model,the modal characteristics of the corrugated sandwich panel were extracted,and the p-k method was employed for thermal flutter analysis to evaluate the aerodynamic response.The results show that this method improves computational efficiency by 80%,and the error is controlled within 3%.关键词
波纹夹芯板/正交各向异性材料/热力等效模型/热颤振/均质化理论Key words
corrugated sandwich panel/orthotropic material/thermo-mechanical equivalent model/thermal flutter/homogenization theory分类
航空航天引用本文复制引用
祁武超,翟梦琦..基于热力等效模型的波纹夹芯板热颤振计算[J].沈阳航空航天大学学报,2026,43(1):1-8,8.基金项目
辽宁省教育厅面上项目(项目编号:JYTMS20230253,JYTMS20230224). （项目编号:JYTMS20230253,JYTMS20230224）
