Numerical simulation of linear fiction welding (LFW) processes
- University of Palermo-Dept. of Industrial engineering (Italy)
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.
- OSTI ID:
- 21516712
- Journal Information:
- AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589693; (c) 2011 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM ALLOYS
AXIAL SYMMETRY
BONDING
COMPUTERIZED SIMULATION
COPPER COMPOUNDS
FINITE ELEMENT METHOD
FRICTION
FRICTION WELDING
HEAT
HEAT SOURCES
MATERIALS
NICKEL COMPOUNDS
PROCESSING
SOLIDS
STEELS
STRAINS
TITANIUM ALLOYS
TWO-DIMENSIONAL CALCULATIONS
ALLOYS
CALCULATION METHODS
CARBON ADDITIONS
ENERGY
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATHEMATICAL SOLUTIONS
NUMERICAL SOLUTION
SIMULATION
SYMMETRY
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENT COMPOUNDS
WELDING