Prediction of Forming Limit of Sheet Metal Based on Stören-Rice Model

Abstract:

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On the basis of Storen-Rice model, the limit strain formula is derived by introducing the plasticity constitutive relation coupling Logan-Hosford yield function. Limit strain of AL6111-T4 and AL2028 is calculated and compared with experimental data. The effect of index a of yield function, anisotropy parameter r on the calculation result is discussed. Index a has a significant effect on the right hand side(RHS) limit strain, while it has less relation with left hand side(LHS) limit strain. The RHS limit strain is smaller while a-value gets larger. Good correlation between the calculation result and experimental data is indicated when a-value equals to 4. The RHS limit strain is smaller while r gets larger when a equals to 2, while it has less relation with r when a equals to 4 or 6.

Info:

Periodical:

Edited by:

Chuansheng Wang, Lianxiang Ma and Weiming Yang

Pages:

205-210

DOI:

10.4028/www.scientific.net/AMR.221.205

Citation:

W. G. Guo et al., "Prediction of Forming Limit of Sheet Metal Based on Stören-Rice Model", Advanced Materials Research, Vol. 221, pp. 205-210, 2011

Online since:

March 2011

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Price:

$35.00

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