CAJ | 학술논문

结合“点阵钉模、真空负压、蜂窝夹层”的工艺过程，对夹层结构进行力学分析。用两种方法计算夹层结构的回弹，并进行比较，得到一种适合工程应用的快速回弹计算方法，为预测夹层结构型面制造精度提供依据。建立基于ABAQUS的夹层结构有限元模型，进行压贴-胶结-回弹的模拟分析。对比不同网格尺寸、不同曲率半径夹层结构回弹量的大小及分布，验证了解析方程的准确性。同时得到适合于模拟夹层结构回弹的网格尺寸。
결합“점진정모、진공부압、봉와협층”적공예과정，대협층결구진행역학분석。용량충방법계산협층결구적회탄，병진행비교，득도일충괄합공정응용적쾌속회탄계산방법，위예측협층결구형면제조정도제공의거。건립기우ABAQUS적협층결구유한원모형，진행압첩-효결-회탄적모의분석。대비불동망격척촌、불동곡솔반경협층결구회탄량적대소급분포，험증료해석방정적준학성。동시득도괄합우모의협층결구회탄적망격척촌。
For the process of “discrete nails die ,vacuating press ,honeycomb sandwich” ,a mechanical analysis of the sandwich structure was analyzed .An analytical springback equation of the structure was deduced using two methods ,and a quick engineer-ing springback calculation method was obtained by comparing the two methods ,which provided a basis for predicting the surface manufacturing precision .Based on the ABAQUS ,the finite element (FE) model of the structure was established in the order of fitting ,cementation and springback .Comparing the results of different curvature radii under different grid sizes ,the accuracy of the analytical equation was verified .Also a suitable grid size was obtained for simulation of the sandwich structure springback .