Abstract
<title>Abstract</title> <p>The impact resistance of carbon fiber reinforced resin matrix composites degrades significantly at elevated temperatures, yet high-velocity impact tests under such conditions are rarely reported. In this study, high-velocity impact tests are performed on composite laminates at room temperature, 160°C and 200°C using a gas gun, with impact velocities ranging from 237 m/s to 337 m/s across all specimens. A temperature-dependent dynamic constitutive model that accounts for thermal softening of the matrix and strain-rate strengthening of the fibers is developed and implemented as a VUMAT subroutine within the ABAQUS/Explicit framework, integrating a three-dimensional Hashin criterion for intralaminar damage and a cohesive zone model for interlaminar delamination. Numerical predictions of damage morphology and failure mode show good agreement with experimental observations, with velocity errors for each test specimen maintained below 5%. The proposed method provides a practical tool for predicting the high-temperature impact response of fiber-reinforced composites under varying impact velocities.</p>