TY - JOUR
T1 - A transformation-field analysis of thermomechanical stresses in particulate metal-matrix composites
AU - Chen, Tungyang
AU - Liu, Su Hong
N1 - Funding Information:
Acknowledgements-This work was supported by the National Science Council, Taiwan, under contract NSC 82-0401-EOO6-231. The first author would like to thank Professor G. J. Dvorak for helpful discussions.
PY - 1994
Y1 - 1994
N2 - Microstress fields in particulate metal-matrix composites during cooling from the fabrication to room temperature are investigated. The analysis is based on the transformation-field method recently proposed by Dvorak (1992, Proc. R. Soc. London A437, 311-327) for modeling the inelastic behavior of composite materials. A simple unit-cell model of a composite sphere is employed to describe the microgeometry of the medium. It is demonstrated that the method, together with the solutions of some auxiliary boundary-value problems, provides an efficient tool for the evaluation of local fields in the representative volume. In addition, the mechanical load is considered. A remarkable feature of the formulation is that the transformation concentration factor can be resolved analytically, which greatly reduces the computation time. Numerical examples are presented for two potential composite systems. Successive distributions of local stresses versus the temperature change in the elastic-plastic expansion are illustrated.
AB - Microstress fields in particulate metal-matrix composites during cooling from the fabrication to room temperature are investigated. The analysis is based on the transformation-field method recently proposed by Dvorak (1992, Proc. R. Soc. London A437, 311-327) for modeling the inelastic behavior of composite materials. A simple unit-cell model of a composite sphere is employed to describe the microgeometry of the medium. It is demonstrated that the method, together with the solutions of some auxiliary boundary-value problems, provides an efficient tool for the evaluation of local fields in the representative volume. In addition, the mechanical load is considered. A remarkable feature of the formulation is that the transformation concentration factor can be resolved analytically, which greatly reduces the computation time. Numerical examples are presented for two potential composite systems. Successive distributions of local stresses versus the temperature change in the elastic-plastic expansion are illustrated.
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U2 - 10.1016/0961-9526(94)90114-7
DO - 10.1016/0961-9526(94)90114-7
M3 - Article
AN - SCOPUS:43949153065
SN - 0961-9526
VL - 4
SP - 763
EP - 774
JO - Composites Engineering
JF - Composites Engineering
IS - 7
ER -