Prediction method for inherent frequency decrease of composite unidirectional laminates under narrow-band random vibration load

Xiang Xie, Tao Wu, Weixing Yao, Yuan Tao, Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics

Journal of Composite Materials

Published online on September 12, 2025

Abstract

Journal of Composite Materials, Ahead of Print.
When composite laminates are subjected to random vibration loads, internal fatigue damage alters the material properties, which in turn affects the stress-strain response of the laminates. This forms an evolving process where response, damage, and ...