Low-velocity impact response of bio-inspired multi-sinusoidal corrugated sandwich structure
Year: 2026
Type: article
Abstract: This study investigated the low-velocity impact response of bio-inspired multi-sinusoidal corrugated (BMSC) sandwich structures inspired by marine shells. A comprehensive experimental study was conducted with impact energies ranging from 45.09 J to 280.83 J. Finite element simulations using ABAQUS provided detailed insights into the progressive damage mechanisms and impact responses across various configurations. Four distinct failure modes were categorized, corresponding to different impact energy levels, ranging from localized deformation to complete penetration. The impact force-time and impact force-displacement curves, along with the energy absorption characteristics, were analyzed. Results revealed that the BMSC sandwich structures demonstrate superior impact resistance and energy absorption capabilities compared to traditional sinusoidal corrugated sandwich structure designs. This advantage is owing to the introduced bio-inspired cores, which feature enhanced structural stiffness and superior stress diffusion properties. The research provides an in-depth understanding of the impact response, damage mechanisms, and energy absorption capacity of BMSC sandwich structures, highlighting their suitability for protective structure applications.
Source: Engineering Structures
Institutions: Guangzhou University, Shantou University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,620
OpenAlex ID: W7127975474