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TECHNICAL PAPERS

Numerical Simulations of the Creep Deformation of MMCs in 4-Point Bending Mode

[+] Author and Article Information
Thomas Daxner, Franz G. Rammerstorfer

Institute of Lightweight Structures and Aerospace Engineering, Vienna University of Technology, Gusshausstr., 27–29, A-1040 Vienna, Austria

Javier Segurado, Heinz E. Pettermann

Division of Materials Technology, Austrian Research Centers, A-2444 Seibersdorf, Austria

J. Eng. Mater. Technol 125(1), 50-55 (Dec 31, 2002) (6 pages) doi:10.1115/1.1525253 History: Received January 05, 2002; Revised August 14, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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References

Figures

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Scheme of a symmetry half of the two different macromechanical models; layer model (a) and overlay model (b)
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Elasto-plastic stress-strain relationships at 4 different temperatures for the aluminum matrix material 4
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Comparison between the linear elastic and the elastic-plastic force-deflection predictions for the sample A2
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Predicted axial stress distribution in the beam symmetry plane for the sample A2, after heating and bending, but prior to creep
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Predicted shear stress distribution between supports and loading points for the sample A2, after heating and bending, but prior to creep
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Elasto-plastic and creep deformation at 300°C and a constant force level (sample A2)
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Micromechanical FE models representing fiber-matrix topologies; original unit cell (left) and flipped unit cell (right)
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Contour plot of the creep shear strains at the end of the active loading history
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Shear creep (rate) predicted by the micromechanical unit cell FE models normalized by the shear creep (rate) in a layered unit cell

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