Journal
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
Volume 23, Issue 7, Pages 3336-3367Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1099636220927650
Keywords
Sandwich panel; corrugated core; three-point bending; energy absorption; multi-objective optimization
Categories
Funding
- Rail Manufacturing Cooperative Research Centre through Project R2.7.4 - Evaluation of hybrid structures for impact performance in rail applications
- Rail Manufacturing Cooperative Research Centre (Australian Federal Government's Business Cooperative Research Centres Program) through Project R2.7.4 - Evaluation of hybrid structures for impact performance in rail applications
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Corrugated sandwich panels are widely used in engineering applications due to their excellent energy absorption and lightweight properties. This research investigates the mechanical response of aluminum corrugated sandwich panels under three-point bending through experimental, numerical, and theoretical methods. Parametric studies using ABAQUS/explicit show that geometric configurations have significant effects on the deformation mode, peak force, and energy absorption of the panels.
Corrugated sandwich panels are widely used in engineering applications for their excellent energy absorption and lightweight. In this research, the mechanical response of aluminum corrugated sandwich panels subjected to three-point bending is investigated experimentally, numerically, and theoretically. In the experiments, the sandwich panels were loaded under two conditions, namely base indentation and node indentation. A parametric study is conducted by ABAQUS/explicit to investigate the effects of geometric configurations (corrugation angle, core height, and core thickness) on the deformation mode, peak force, and energy absorption. Both peak force and specific energy absorption vary with the geometric parameters. Theoretical models are further developed to predict the force-displacement curves of the panels under the two loading conditions. The theoretically predicted crushing force is in good agreement with both the experimental and simulated results. Finally, the non-dominated sorting genetic algorithm II is adopted to optimize the geometric configuration to improve the specific energy absorption and reduce the weight of corrugated sandwich panels.
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