Paper number 939

THE SMOOTH INDENTATION OF A CYLINDRICAL INDENTOR AND ANGLE-PLY LAMINATES

W. C. Liao

Department of Civil Engineering, Feng Chia University
100 Wen Hwa Rd, Taichung, Taiwan

Summary

The indentation between cylindrical indentor and angle-ply composites is investigated. An exact Green's function for the surface displacement of an angle-ply beam is derived using Jones's displacement formulation. By matching the displacements of the top surface of the angle-ply laminate and those of the indentor within the contact region, we can find the contact stress distribution, the magnitude of contact force and the indentation. In order to speed up the formulation of fundamental deflection mode shape of Green's function, method of initial function (MIF) is adopted to find the displacements in the top and bottom surface of an angle-ply laminate. In the MIF, the order of system equation is only 3(3, which will reduce the computation time. Numerical results for angle-ply laminates subjected to cylindrical indentation are evaluated to verify the applicability of the proposed method.

Keywords

angle-ply laminates, indentation, point matching method, method of initial functions.