Low-Velocity Impact Response Analysis of Fibre-Metal Laminate (FML) Circular Cylindrical Shells Using A Simple New Contact Force Estimation Procedure

In this paper, low-velocity impact response analysis of fibre-metal laminate (FML) circular cylindrical shells is achieved using a simple new contact force estimation procedure. The boundary conditions are assumed to be fully simply supported. The material behavior is assumed to be linear elastic. The analysis is based on first-order shear deformation theory and the Fourier series method is used to solve the governing equations of the FML shell analytically. Low-velocity impact analysis due to a large mass impactor is studied and the response is assumed to be quasi-static. Hence, in the simple new contact force estimation procedure, the history of contact force is primarily assumed to be a half-sine. Then, the maximum contact force and the contact duration are both solved analytically. Validity of the results of the present analysis is confirmed by comparing them with the theoretical as well as experimental results available in the literature. Effects of some parameters like metal volume fraction (MVF), FML layup, mass and velocity of the impactor on the impact response are investigated. Some new results are obtained, not hitherto reported in the published literature. The results indicate that these parameters are important factors affecting the impact response of the FML shells.

Keywords:

low-velocity impact , Fibre-Metal Laminate , circular cylindrical shell , composite , impactforce history