Solid state welding processes are becoming increasingly important due to a large number of advantages related to joining “unweldable” materials and in particular light weight alloys. Linear friction welding (LFW) has been used successfully to bond non-axisymmetric components of a range of materials including titanium alloys, steels, aluminum alloys, nickel, copper, and also dissimilar material combinations. The technique is useful in the research of quality of the joints and in reducing costs of components and parts of the aeronautic and automotive industries. LFW involves parts to be welded through the relative reciprocating motion of two components under an axial force. In such process the heat source is given by the frictional forces work decaying into heat determining a local softening of the material and proper bonding conditions due to both the temperature increase and the local pressure of the two edges to be welded. This paper is a comparative test between the numerical model in two dimensions, i.e. in plane strain conditions, and in three dimensions of a LFW process of AISI1045 steel specimens. It must be observed that the 3D model assures a faithful simulation of the actual threedimensional material flow, even if the two-dimensional simulation computational times are very short, a few hours instead of several ones as the 3D model. The obtained results were compared with experimental values found out in the scientific literature.
Fratini, L., & LA SPISA, D. (2011). Numerical simulation of linear fiction welding (LFW) processes. In The 14th International ESAFORM Conference on Material Forming AIP Conf. Proc. 1353, (pp.1284-1289) [10.1063/1.3589693].
|Autori:||Fratini, L.; LA SPISA, D.|
|Titolo:||Numerical simulation of linear fiction welding (LFW) processes|
|Settore Scientifico Disciplinare:||Settore ING-IND/16 - Tecnologie E Sistemi Di Lavorazione|
|Data di creazione:||2011|
|Nome del convegno:||ESAFORM 2011|
|Luogo del convegno:||Belfast|
|Anno del convegno:||27-29 Aprile 2011|
|Numero del convegno:||14th|
|Data di pubblicazione:||2011|
|Numero di pagine:||6|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1063/1.3589693|
|Citazione:||Fratini, L., & LA SPISA, D. (2011). Numerical simulation of linear fiction welding (LFW) processes. In The 14th International ESAFORM Conference on Material Forming AIP Conf. Proc. 1353, (pp.1284-1289) [10.1063/1.3589693].|
|Tipologia:||0 - Proceedings (TIPOLOGIA NON ATTIVA)|
|Appare nelle tipologie:||0 - Proceedings (TIPOLOGIA NON ATTIVA)|