Predicting Forming Limit of Hot Stamping Boron Steel Using a Modified Zener-Hollomon Parameter based Ductile Failure Criterion

2025-01-8225

04/01/2025

Features
Event
WCX SAE World Congress Experience
Authors Abstract
Content
Combined with a modified Zener-Hollmon parameter, a recently proposed ductile failure criterion is further improved to predict the forming limit of boron steel at hot stamping temperatures. The ductile failure criterion takes into account the critical damage at localized necking or at fracture as a function of strain path and initial sheet thickness. The modified Zener-Hollomon parameter accounts for both effect of varying strain rate and temperature for Boron steel. Working FEM simulation, the capability of the ductile failure criterion is further demonstrated by predicting forming limit of a boron steel in an isothermal Nakajima dome test. Comparison shows the prediction matches quite well with the measurement.
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DOI
https://doi.org/10.4271/2025-01-8225
Pages
8
Citation
Sheng, Z., and Mallick, P., "Predicting Forming Limit of Hot Stamping Boron Steel Using a Modified Zener-Hollomon Parameter based Ductile Failure Criterion," SAE Technical Paper 2025-01-8225, 2025, https://doi.org/10.4271/2025-01-8225.
Additional Details
Publisher
Published
Apr 01
Product Code
2025-01-8225
Content Type
Technical Paper
Language
English