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SUMMARY:Mon-Mo-Po1.02-01 [13]: Parametric Sensitivity Characteristics of N
umerical Simulations on EMF Free Bulging of Circular Sheet Metal
DTSTART;VALUE=DATE-TIME:20190923T161500Z
DTEND;VALUE=DATE-TIME:20190923T181500Z
DTSTAMP;VALUE=DATE-TIME:20201203T122647Z
UID:indico-contribution-3416608@indico.cern.ch
DESCRIPTION:Speakers: Evandro Paese (Departamento de Engenharia Mecânica\
, Universidade de Caxias Sul\, Campus Universitário da Região dos Vinhed
os)\nElectromagnetic forming (EMF) processes of sheet metal are used to ma
nufacture several components in modern industry. The EMF process is a high
ly nonlinear phenomenon and its understanding is a complex task due to the
coupling of the electrical\, magnetic\, thermal and mechanical problems.
The generated electromagnetic forces in this process are directly correlat
ed to the resulting deformed workpiece geometry and strongly dependent on
EMF system parameters as capacitance\, initial capacitor energy\, tool geo
metry\, and its electrical conductivity\, inductance\, and mechanical prop
erties. This study focuses on performing a parametric sensitivity analysis
by numerical simulations of free bulging of circular sheet metal aiming a
high and adequate force distribution from the EMF system. The numerical m
ethod solves the electromagnetic problem using an in-house script implemen
ted in Matlab and then the mechanical problem is solved using the ABAQUS/E
xplicit Finite Element software. In the presented method\, the EMF process
is treated as fully coupled electric-magnetic and uncoupled with the mech
anical problem\, solving electrical circuits\, identifying their parameter
s\, and presenting calculations method for the magnetic flux density\, the
self and mutual inductances\, and the electromagnetic force distribution
regarding coil geometry to the initial time instant. The electromagnetic f
orce calculated with Matlab is employed in a user subroutine of ABAQUS/Exp
licit to predict the movement of the workpiece. The research methodology i
nvolves a parametric sensitivity analysis considering the following design
variables parameters of EMF devices: system capacitance\, energy pulse\,
and tool coil geometry. Finally\, conclusions and design principles for th
e free bulging of sheet metal by EMF are outlined.\n\nhttps://indico.cern.
ch/event/763185/contributions/3416608/
LOCATION: Level 2 Posters 1
URL:https://indico.cern.ch/event/763185/contributions/3416608/
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