Void growth in an anisotropic ductile solid is studied by numerical analyses for three-dimensional (3D) unit cells initially containing a void. The effect of plastic anisotropy on void growth is the main focus, but the studies include the effects of different void shapes, including oblate, prolate, or general ellipsoidal voids. Also, other 3D effects such as those of different spacings of voids in different material directions and the effects of different macroscopic principal stresses in three directions are accounted for. It is found that the presence of plastic anisotropy amplifies the differences between predictions obtained for different initial void shapes. Also, differences between principal transverse stresses show a strong interaction with the plastic anisotropy, such that the response is very different for different anisotropies. The studies are carried out for one particular choice of void volume fraction and stress triaxiality.
Effects of Plastic Anisotropy and Void Shape on Full Three-Dimensional Void Growth
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received January 25, 2018; final manuscript received January 26, 2018; published online March 14, 2018. Editor: Yonggang Huang.
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Legarth, B. N., and Tvergaard, V. (March 14, 2018). "Effects of Plastic Anisotropy and Void Shape on Full Three-Dimensional Void Growth." ASME. J. Appl. Mech. May 2018; 85(5): 051007. https://doi.org/10.1115/1.4039172
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