Research progress on anti-explosion performance and optimization design methods of sandwich panels in multiple explosion scenarios

Overview

Sandwich panels represent a structural solution for blast-resistant applications, combining high-strength materials with cellular cores to achieve lightweight designs while maintaining energy absorption capacity. The research synthesizes existing knowledge on sandwich panel performance across multiple explosion scenarios, addressing gaps in understanding the relationships between material properties and anti-explosion performance, as well as the underlying failure mechanisms during dynamic loading events.

Methods and approach

The investigation employs multi-factor collaborative analysis to systematically examine the influence of core material characteristics, core configurations, geometric parameters (core and face sheet thickness), structural stiffness and strength properties, and interfacial bonding quality on dynamic response and blast resistance. The analysis integrates material mechanical property assessment with structural failure response mechanisms to elucidate energy absorption pathways during shock wave interaction.

Key Findings

Primary findings identify core characteristics, core combinations, component thicknesses, structural strength and stiffness parameters, and interfacial bond performance as critical determinants of sandwich panel anti-explosion behavior. Interfacial bond quality emerges as a particularly significant factor influencing overall blast mitigation capacity. Energy dissipation occurs through synergistic mechanisms: shock wave attenuation via core plastic deformation coupled with panel bending and tensile responses.

Implications

The research establishes that optimization of sandwich panels for blast resistance requires multidisciplinary approaches incorporating gradient design methodologies and multi-scale structural optimization. Future development necessitates deeper mechanistic understanding of how material mechanical properties translate to structural failure response in energy absorption contexts. Systematic investigation of material-structure property matching remains essential for advancing lightweight blast-resistant panel design.