The Contact Behavior Between Laminated Composite Plates and Rigid Spheres

[+] Author and Article Information
Enboa Wu, Ching-Shih Yen

Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan 10764, Republic of China

J. Appl. Mech 61(1), 60-66 (Mar 01, 1994) (7 pages) doi:10.1115/1.2901421 History: Received December 12, 1991; Revised December 31, 1992; Online March 31, 2008


The contact behavior between a composite laminate and a rigid sphere is discussed in this paper using a method derived from the three-dimensional anisotropic elasticity theory. Response of the plate and the force-indentation ( F − α ) relationship were obtained by constructing an exact Green’s function of the laminate. Agreement between the prediction and the experimental data reported by others is excellent before laminates are damaged. The F - α relationship is approximately proportional to the out-of-plane Young’s modulus and is influenced by the plate thickness. The effects of changing the in-place Young’s moduli, all the shear moduli, stacking sequences and span of the laminates are insignificant unless identation is large. Further, the modified Hertz law underestimates the contact force for the same indentation.

Copyright © 1994 by The American Society of Mechanical Engineers
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