A Mathmatical Approach for Modeling Real Hot Forming Process Using Physical Simulation Results

Abstract:

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Recently, physical simulation has played a more and more important role in modeling hot forming process. However, difficulty still existed in simulating real hot forming process using physical simulation results directly for obvious difference in deformation history between physical simulation condition and real hot forming process. In this work, difference between physical simulation and real hot forming process was discussed and a mathmatical approach was proposed to model real hot forming process using physical simulation results. The main consideration of the method was to put physical simulation results into differential forms in order to take count in the contribution of deformation history (temperature and strain rate) at each incremental step. For the application of the approach, modeling of material flow stress, dynamical recrystallization including critical condition and recrystallziaton fraction, damage evolution and fracture criteria during real hot forming process were presented as examples, although experimental support was still needed for validation and further application.

Info:

Periodical:

Materials Science Forum (Volumes 575-578)

Edited by:

Jitai NIU, Zuyan LIU, Cheng JIN and Guangtao Zhou

Pages:

502-507

DOI:

10.4028/www.scientific.net/MSF.575-578.502

Citation:

S. H. Zhang et al., "A Mathmatical Approach for Modeling Real Hot Forming Process Using Physical Simulation Results", Materials Science Forum, Vols. 575-578, pp. 502-507, 2008

Online since:

April 2008

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Price:

$35.00

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