In this section
@inproceedings{Li:2011:10.1063/1.3589738,
author = {Li, N and Mohamed, MS and Cai, J and Lin, J and Balint, D and Dean, TA},
doi = {10.1063/1.3589738},
pages = {1555--1561},
publisher = {American Institute of Physics},
title = {Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes},
url = {http://dx.doi.org/10.1063/1.3589738},
year = {2011}
}
TY - CPAPER
AB - Formability of steel and aluminium alloys in hot stamping and cold die quenching processes is studied in this research. Viscoplasticdamage constitutive equations are developed and determined from experimental data for the prediction of viscoplastic flow and ductility of the materials. The determined unified constitutive equations are then implemented into the commercial Finite Element code Abaqus/Explicit via a user defined subroutine, VUMAT. An FE process simulation model and numerical procedures are established for the modeling of hot stamping processes for a spherical part with a central hole. Different failure modes (failure takes place either near the central hole or in the mid span of the part) are obtained. To validate the simulation results, a test programme is developed, a test die set has been designed and manufactured, and tests have been carried out for the materials with different forming rates. It has been found that very close agreements between experimental and numerical process simulation results are obtained for the ranges of temperatures and forming rates carried out.
AU - Li,N
AU - Mohamed,MS
AU - Cai,J
AU - Lin,J
AU - Balint,D
AU - Dean,TA
DO - 10.1063/1.3589738
EP - 1561
PB - American Institute of Physics
PY - 2011///
SN - 0094-243X
SP - 1555
TI - Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes
UR - http://dx.doi.org/10.1063/1.3589738
ER -