(Elsevier, 2015) Salcedo Pérez, Daniel; Luis Pérez, Carmelo Javier; Luri Irigoyen, Rodrigo; León Iriarte, Javier; Puertas Arbizu, Ignacio; Fuertes Bonel, Juan Pablo; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen Ingeniaritza
In the present study, the design of the dies required for the isothermal forging of a cam is analysed by finite volume method.
Specifically, cams are of great importance in automotive industry, where a lower weight and an improvement in the lubrication or
in the materials to be in contact lead to a significant reduction in the fuel cost.
The flow stress curves of one Al-Mg alloy were firstly determined by using compression tests. Once these flow stress curves
were obtained, FV simulation was employed. In the forging process, the optimum die configuration has been selected. To this
end, several aspects have been taken into account such as the force required for the forging, the correct die filling, the introduced
plastic strain and the damage imparted to the billet.
(Elsevier, 2015) Fuertes Bonel, Juan Pablo; Luri Irigoyen, Rodrigo; Luis Pérez, Carmelo Javier; Salcedo Pérez, Daniel; León Iriarte, Javier; Puertas Arbizu, Ignacio; Ingeniería Mecánica, Energética y de Materiales; Mekanika, Energetika eta Materialen Ingeniaritza
This present research work deals with the analysis of the design of different specimen geometries so that by finite volume
simulations, the appearance of cracks may be predicted in the case of forging processes. To this end, each of the geometries
selected are studied by means of compression tests between plane shape dies in the same conditions (T = 25 ºC). On the one
hand, a value for the critical damage value is obtained by applying the Cockroft-Latham’s criterion and on the other hand, a
damage distribution along all the specimen volume with the aim of defining a specimen which shows the most likely place for the
crack to appear. This crack location may be also determined through visual inspection with the aim of being able to evaluate this
experimentally in the near future.
