Paper number 815
THEORETICAL STUDIES ON STEADY-STATE FIBRE PULL-OUT |
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. |