Home // ICQNM 2012 , The Sixth International Conference on Quantum, Nano and Micro Technologies // View article
Authors:
Mohammad Tahaye Abadi
Keywords: debonding; micromechanial modelling; transverse loading
Abstract:
A micromechanics damage model is presented to examine the effect of microstructures on the fiber–matrix debonding for unidirectional carbon fiber reinforced metal matrix composites under the transverse loading. Microstructure is represented by a repeating unit cell (RUC). Two fiber arrays are considered including ideal square fiber packing and random fiber packing defined by random sequential algorithm. A cohesive zone model is used to predict the onset of fiber–matrix debonding while the non-linear behavior in the matrix phase is modeled using the von-Mises plasticity theory. The micromechanical results show that the damage evolution starts at a lower stress level in the microstructure with random fiber packing compared to the regular microstructure and the transverse stress converges to the same level in both microstructures at high strain value. Micromechanical modeling procedure provides detail viewpoint into the microscopic damage accumulation prior to ultimate failure and highlights the different roles of the fiber–matrix debonding and matrix plasticity in the macroscopic response of the composite.
Pages: 46 to 51
Copyright: Copyright (c) IARIA, 2012
Publication date: August 19, 2012
Published in: conference
ISSN: 2308-3530
ISBN: 978-1-61208-214-1
Location: Rome, Italy
Dates: from August 19, 2012 to August 24, 2012