Abstract
The large scale and long calculation times are unavoidable problems in modeling honeycomb structures with large sizes and dense cells. The cell magnification equivalent is the main method to solve those problems. This study finds that honeycomb structures with the same thickness-to-length ratios have the same mechanical properties and energy absorption characteristics. The improved equivalent finite element models of honeycomb structures with the same thickness-to-length ratios were established and validated by experiments. Based on the validated finite element model of the equivalent honeycomb structures, the out-of-plane compression behaviors of honeycomb structures were analyzed by LS-DYNA software. The results show that the performance of honeycomb structures is not equivalent before and after cell magnification. Thus, the cell magnification results were further subjected to CORA (correlation analysis) to determine the magnification time and prove the accuracy of the cell magnification time through drop-weight impact tests. In addition, a first-order decay exponential function (ExpDec1) for predicting cell magnification time was obtained by analyzing the relationship between the cell wall length and the cell magnification time.
Funder
the Hu-Xiang Youth Talent Program
the National Natural Science Foundation of China
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
Reference36 articles.
1. Effect of position of tension-loaded inserts on honeycomb panels used for space applications;Slimane;Int. J. Interact. Des. Manuf.,2018
2. Testing and modeling tearing and air effect of aluminum honeycomb under out-of-plane impact loading;Liu;Int. J. Impact Eng.,2020
3. Gong, X., Ren, C., Liu, Y., Sun, J., and Xie, F. (2022). Impact Response of the Honeycomb Sandwich Structure with Different Poisson’s Ratios. Materials, 15.
4. Numerical modelling of honeycomb core crush behavior;Levent;Eng. Fract. Mech.,2008
5. A study on the mean crushing strength of hexagonal multi-cell thin-walled structures;Bai;Thin-Walled Struct.,2014
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