The effect of straining mode on void growth |
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Authors: | Ling Xianwu Li Guochen |
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Institution: | (1) LNM, Institute of Mechanics, The Chinese Academy of Sciences, 100080 Beijing, China |
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Abstract: | Large strain finite element method is employed to investigate the effect of straining mode on void growth. Axisymmetric cell
model embedded with spherical void is controlled by constant triaxiality loading, while plane-stress model containing a circular
void is loaded by constant ratio of straining. Elastic-plastic material is used for the matrix in both cases. It is concluded
that, besides the known effect of triaxiality, the straining mode which intensifies the plastic concentration around the void
is also a void growth stimulator. Experimental results are cited to justify the computation results.
This paper is jointly supported by the National Natural Science Foundation of China (19872064), the Chinese Academy of Sciences
(KJ951-1-201) and the Laboratory for Nonlinear mechanics of Continuous Media of the Institute of Mechanics |
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Keywords: | void growth elastic-plastic material damage |
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