Paper number 815


X. Zhang, H.-Y. Liu and Y.-W. Mai

Centre for Advanced Materials Technology, Department of Mechanical and Mechatronic Engineering, University of Sydney, NSW 2006, Australia

Summary An improved theoretical model has been developed to study the mechanics of a steady-state fibre pull-out test. With only a few assumptions, the solutions of the stress field satisfy all equilibrium equations, boundary conditions and continuity at the fibre/matrix. As distinct from previous work, the effect of pull-out rate is taken into account in the interfacial friction and debonding. Numerical results of the stress distribution in both bonded and debonded regions are given for a typical carbon/epoxy composite. Applied stress (load)-displacement curves of a fibre pull-out process are obtained by computer simulation.
Keywords steady-state fibre pull-out, rate-dependent friction, stress field, interface debonding, frictional sliding, local-strain criterion.

Theme : Interface and Interphase ; Mechanical Properties

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