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July 15, 2025

Low-velocity impact response of composite sandwich structures with hierarchical gradient foam/carbon fiber

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Authors

FZFuxian ZhuLLLingzhi LuoKHKejun Hu

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Overview

This research demonstrates optimal impact resistance in composite sandwich structures with varying core densities, highlighting energy absorption characteristics and failure modes.

Key Points

  • Negative-density-gradient foam structures show optimal impact resistance during drop-weight tests at energy levels of 20 J, 40 J, and 80 J.
  • Different core density distributions affect energy absorption characteristics and the failure morphology of foam sandwich structures.
  • Finite element simulations were used to analyze the damage evolution process in sandwich panels during impact tests.
  • Understanding the performance of these structures aids in the design of impact-resistant materials for aerospace and defense applications.

Cite This Study

Zhu et al. (2025) studied this question.

synapsesocial.com/papers/689a02bce6551bb0af8cc5d7https://doi.org/10.21203/rs.3.rs-7075406/v1
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Low-Speed Impact Behavior of 3D-Printed Polylactic Acid-Based Auxetic Core Sandwich Structures Filled with Polyurethane Foams2026
  2. 2Experimental investigation of a hybrid dual-core composite sandwich structure under low-velocity impact loads2026
  3. 3Impact response and residual performance of hybrid graded sandwich panels for UAV structural applications2026 · 1 citations
  4. 4Study on Dynamic Mechanical Properties of Sandwich Beam with Stepwise Gradient Polymethacrylimide (PMI) Foam Core under Low-Velocity Impact2024 · 3 citations
  5. 5Effect of core densities on quasi‐static and low‐velocity impact behaviors of <scp>AFRP</scp>‐aluminum foam hybrid sandwich beams2024