Reference : Thermomechanical simulations of blanking process operated over a wide range of punch ...
Scientific congresses and symposiums : Paper published in a journal
Engineering, computing & technology : Mechanical engineering
Thermomechanical simulations of blanking process operated over a wide range of punch velocities
Canales, Christian [> >]
Boman, Romain mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique >]
Ponthot, Jean-Philippe mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Journal of Physics. Conference Series
IOP Conf. Series: Journal of Physics: Conf. Series
Yes (verified by ORBi)
NUMISHEET 2018 - International Conference on Numerical Methods in Sheet Forming Processes
30 Jul - 3 Aug
[en] Blanking ; Sheet Forming ; Crack Propagation ; Numerical Simulation ; Remeshing
[en] numerical model based on the finite element method has been developed
to simulate the blanking process. Thanks to this model we analyse the influence of
punch velocities during blanking on the quality of the sheared edge and the
characteristic parameters governing the process (maximum punch force and
displacement, temperature increase). In this model, inertia, viscous and thermal effects
are properly considered by means of a unified thermomechanical framework. A full
remeshing approach is adopted to overcome the high distortion of elements due to
large deformations, prior to fracture. The material strain-rate sensitivity is introduced
by means of an extension of elasto-viscoplastic constitutive equations for the large
strain regime. The inertial effects are considered thanks to an implicit time integration
scheme. Crack propagation during the process is tracked using the element deletion
method driven by an uncoupled damage criterion. Finally, the coupled
thermomechanical problem is solved by an isothermal staggered scheme.
Experimental and numerical results are compared for the entire range of punch
velocities under consideration. Good agreement between both results has been found.

File(s) associated to this reference

Fulltext file(s):

Open access
Canales_2018_J._Phys.__Conf._Ser._1063_012014.pdfPublisher postprint687.2 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.