In most variation simulations, i.e., simulations of geometric variations in assemblies, the influence from heating and cooling processes, generated when two parts are welded together, is not taken into consideration. In most welding simulations, the influence from geometric tolerances on parts is not taken into consideration, i.e., the simulations are based on nominal parts. In this paper, these two aspects, both crucial for predicting the final outcome of an assembly, are combined. Monte Carlo simulation is used to generate a number of different non-nominal parts in a software for variation simulation. The translation and rotation matrices, representing the deviations from the nominal geometry due to positioning error, are exported to a software for welding simulation, where the effects from welding are applied. The final results are then analyzed with respect to both deviation and variation. The method is applied on a simple case, a T-weld joint, with available measurements of residual stresses and deformations. The effect of the different sources of deviation on the final outcome is analyzed and the difference between welding simulations applied to nominal parts and to disturbed (non-nominal) parts is investigated. The study shows that, in order to achieve realistic results, variation simulations should be combined with welding simulations. It does also show that welding simulations should be applied to a set of non-nominal parts since the difference between deviation of a nominal part and deviation of a non-nominal part due to influence of welding can be quite large.
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June 2012
Research Papers
Combining Variation Simulation With Welding Simulation for Prediction of Deformation and Variation of a Final Assembly Available to Purchase
Andreas Pahkamaa,
Andreas Pahkamaa
Division of Computer Aided Design,
e-mail: [email protected]
Luleå University of Technology
, SE-971 87 Luleå, Sweden
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Kristina Wärmefjord,
Kristina Wärmefjord
Department of Product and Production Development,
e-mail: [email protected]
Chalmers University of Technology
, SE-412 96 Göteborg, Sweden
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Lennart Karlsson,
Lennart Karlsson
Division of Computer Aided Design,
e-mail: [email protected]
Luleå University of Technology
, SE-971 87 Luleå, Sweden
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Rikard Söderberg,
Rikard Söderberg
Department of Product and Production Development,
e-mail: [email protected]
Chalmers University of Technology
, SE-412 96 Göteborg, Sweden
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John Goldak
John Goldak
Department of Mechanical and Aerospace Engineering,
e-mail: [email protected]
Carleton University
, Ottawa, ON K1S 5B6, Canada
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Andreas Pahkamaa
Division of Computer Aided Design,
Luleå University of Technology
, SE-971 87 Luleå, Sweden
e-mail: [email protected]
Kristina Wärmefjord
Department of Product and Production Development,
Chalmers University of Technology
, SE-412 96 Göteborg, Sweden
e-mail: [email protected]
Lennart Karlsson
Division of Computer Aided Design,
Luleå University of Technology
, SE-971 87 Luleå, Sweden
e-mail: [email protected]
Rikard Söderberg
Department of Product and Production Development,
Chalmers University of Technology
, SE-412 96 Göteborg, Sweden
e-mail: [email protected]
John Goldak
Department of Mechanical and Aerospace Engineering,
Carleton University
, Ottawa, ON K1S 5B6, Canada
e-mail: [email protected]
J. Comput. Inf. Sci. Eng. Jun 2012, 12(2): 021002 (6 pages)
Published Online: February 10, 2012
Article history
Received:
July 7, 2011
Revised:
December 19, 2011
Accepted:
January 2, 2012
Online:
February 10, 2012
Published:
February 10, 2012
Citation
Pahkamaa, A., Wärmefjord, K., Karlsson, L., Söderberg, R., and Goldak, J. (February 10, 2012). "Combining Variation Simulation With Welding Simulation for Prediction of Deformation and Variation of a Final Assembly." ASME. J. Comput. Inf. Sci. Eng. June 2012; 12(2): 021002. https://doi.org/10.1115/1.4005720
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