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Updated: Jan 25, 2026
10:33
Research and Development of High-performance Explosives
Published on: February 20, 2016
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Dynamic response of bi-directional gradient sandwich circular plates under multiple explosive loading
Hairen Wang1,2, Yaoyao Liu3,4, Jianyin Lei5
1School of Architectural Engineering, Yulin University, Yulin, 719000, China. 673505521@qq.com.
Scientific Reports
|January 23, 2026
Summary
Researchers developed a bionic gradient sandwich model inspired by the Royal Water Lily. This design enhances structural performance under multiple blast loads, improving blast resistance and energy absorption without added mass.
Area of Science:
- Engineering Mechanics
- Materials Science
- Bionics
Background:
- Gradient design offers enhanced structural performance in various engineering applications.
- The Royal Water Lily's venation structure inspired a novel bionic approach.
Purpose of the Study:
- To investigate the dynamic response of bi-directional gradient sandwich circular plates under multiple blast loads.
- To analyze the influence of gradient arrangements on deformation, deflection, and energy absorption.
- To optimize the design for improved blast resistance and energy absorption efficiency.
Main Methods:
- A bionic bi-directional gradient sandwich model was created based on the Royal Water Lily structure.
- Four sandwich circular plate models with varying cell wall thicknesses were constructed.
- Deformation modes, face sheet deflections, and energy absorption were analyzed under multiple explosions with different blast impulses.
Main Results:
- Progressive accumulation of deformation and energy absorption was observed under multiple blast loading.
- Incremental energy absorption in face sheets and honeycomb core decreased with an increasing number of explosions.
- Gradient arrangement improved dynamic response and energy absorption by 29.92% without additional mass, even with reduced front panel thickness.
Conclusions:
- Bi-directional gradient sandwich circular plates offer improved performance under multiple blast loads.
- Design modifications, such as adjusting gradient arrangements and front panel thickness, can significantly enhance energy absorption and blast resistance.
- The study provides valuable insights for designing advanced sandwich structures subjected to dynamic loading.
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