Friction Coefficient of CFRP Composite Laminate Edge

Abstract

A calculation method of M-CLT for the friction coefficient of the CFRP composite laminate edge is proposed based on the experimetal friction coefficient of unidirectional lamina with fiber orientation dependency. A high degree algebraic equation for the friction coefficient of the CFRP composite laminate edge is derived by using the Coulomb's friction law and the classical lamination theory. Numerical experiment of a frictional contact problem is performed by means of a nonlinear three-dimensional finite element analysis, and the friction coefficient ofthe CFRP composite laminate edge are obtained for various contact directions andcompared with those obtained from the present calculation method. Good consistency is found between the two kinds of results. Furthermore, a simple calculation example for two beams with frictional contact under uniform pressure is presented to investigate the practical validity of the present method and the effects ofdifferent treatments for the friction coefficient on the contact stresses.