Kapil, A and Sharma, Abhay
(2014)
Coupled Electromagnetic Structural Simulation of Magnetic Pulse Welding.
In: 5th International & 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR 2014), 12-14 December, 2014, IIT Guwahati, Assam, India.
Full text not available from this repository.
Abstract
The present study deals with the Coupled Magnetic-S
tructural analysis of Magnetic pulse welding proces
s applied
on a tubular workpiece. The study investigates the
various criteria required for a successful weld bet
ween the mating
members through a Finite element model developed us
ing COMSOL Multiphysics. The transient electromagne
tic
field phenomenon is coupled sequentially with mecha
nical phenomenon. The coupling between the magnetic
field
and the electrical circuit is formulated in the ele
ctromagnetic part of the model, whereas in the stru
ctural part, the
impact velocities, the effective plastic strain ind
uced in the workpiece and the direction and magnitu
de of the shear
stress at the impact zone are found from the numeri
cal simulations. A viscoplastic material model with
rate
dependent material properties is considered in the
structural part. The effect of varying process para
meters: input
voltage and air gap between the two mating members
on weld quality are computed through numerical simu
lations.
Based on the results of the numerical simulations a
n optimal weldability window is suggested.
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