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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 278-280Finite Element Analysis and Deformation...

Finite Element Analysis and Deformation Homogeneity Optimization of Constrained Groove Pressing

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Abstract:

Improvement of materials properties induced by constrained groove pressing (CGP) depends largely on deformation homogeneity. Utilizing commercial software DEFORM-3D, a finite element model of multi-pass CGP was established. The distribution and homogeneity evolution of equivalent strain ware analyzed in detail. Based on Taguchi optimization method, the influence of processing parameters (such as groove width, groove angle, friction coefficient and deformation rate) on strain homogeneity was studied numerically and systematically. Within a certain range, the optimum parameter combination is obtained by means of signal to noise ratio analysis. The inhomogeneity factor of the optimum model decreases by about 50 %. The average accumulative equivalent strain is almost twice that of the initial model. Analysis of variance shows that groove angle and groove width are the two most important parameters and effect of friction between dies and sample should not be neglected.

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Periodical:

Applied Mechanics and Materials (Volumes 278-280)

Pages:

505-513

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.278-280.505

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Online since:

January 2013

Authors:

Zong Shen Wang, Yan Jin Guan, Li Bin Song, Ping Liang

Keywords:

Constrained Groove Pressing, Deformation Homogeneity, Numerical Simulation, Taguchi Optimization Method

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