Necking Prediction in Tube Hydroforming by Stress-Based Forming Limit Diagrams

Abstract:

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Path-independent stress based forming limit diagrams for anisotropic materials along with the Hill 48 yield function; power law strain hardening and isotropic hardening are derived. Bifurcation analyses via solving equilibrium equations of a pointed vertex on subsequent yield loci are utilized. The presented practical forming limit diagrams (FLSDs) show more acceptable agreements with experimental data compared with those obtained by other methods. A typical neck detection macro in APDL is developed by FEA simulation for a free bulge tube hydroforming to confirm the significant simplicity and straightforwardness of the mentioned FLSD.

Info:

Periodical:

Key Engineering Materials (Volumes 462-463)

Edited by:

Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri

Pages:

284-288

DOI:

10.4028/www.scientific.net/KEM.462-463.284

Citation:

A. Jaamialahmadi and M. Kadkhodayan, "Necking Prediction in Tube Hydroforming by Stress-Based Forming Limit Diagrams", Key Engineering Materials, Vols. 462-463, pp. 284-288, 2011

Online since:

January 2011

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Price:

$35.00

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