# The Energy Absorption of a Hybridized 3D Woven Composite Under High-Velocity Impact Loading

## TL;DR

This study examines how hybrid 3D woven composites made of Kevlar and carbon fibers absorb energy during high-speed impacts and finds optimal configurations for better performance.

## Contribution

The paper introduces an optimized hybridization strategy for 3D woven composites using Kevlar and carbon fibers to enhance energy absorption under high-velocity impact.

## Key findings

- The position of Kevlar hybridization significantly enhances energy absorption in 3D woven structures.
- Adjusting the hybrid combination of yarns increases energy absorption by up to 24.92%.
- An artificial neural network algorithm improves computational efficiency in predicting composite performance.

## Abstract

In this paper, the energy absorption of Kevlar fiber and carbon fiber hybridized 3D woven composites under high-velocity impact loading was studied. A high-velocity impact model was established for the composites. The 3D Hashin and von Mises failure criteria were applied for the damage criteria of the yarn and matrix, and cohesive elements were inserted between them to simulate delamination. To validate the model, simulations were compared with test results. According to the results of the model, an algorithm based on artificial neural networks was also used to predict the hybridized composites for computational efficiency considerations. In the study of optimizing the energy absorption characteristics of three-dimensional woven structures, there is an optimal position and proportion of Kevlar hybridization to ensure the stiffness index of the structure. It is found that the position of Kevlar hybridization can result in considerable enhancement in the energy absorption of the target plate in the 3D woven structure. The proportion of Kevlar content affects the energy absorption of the optimal hybrid combination of the target plate. The energy absorption of the target plate can be effectively increased by adjusting the hybrid combination of different yarns under the condition that the Kevlar content proportion is constant, and the maximum energy absorption can be increased by 24.92%.