An efficient numerical method to analyze low-velocity impact response of carbon fiber reinforced thermoplastic laminates

摘要

Low velocity impact behavior of carbon fiber reinforced thermoplastic laminates are analyzed in this article. Governing equations are derived based on the first-order shear deformation theory and Hamilton's principle. The impact contact force history between the impactor and laminate is formulated by the Hertzian contact law. A Ritz-based solution in space domain for various boundary conditions is developed. Solutions of the system equations in time domain are solved by the Newmark's time integration scheme. Impact parameters such as impact force history, indentation history, and contact time are considered. The accuracy of this method is validated by comparing the obtained results with those from the ABAQUS/Explicit software simulation. The effects of impact velocity, plate geometrical parameters, stacking sequence, and temperature on the dynamic response of laminates under clamped boundary condition and support boundary condition were discussed.