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Tools for simulation based fixture design to reduce deformation in advanced fusion welding
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för elektro- och automationsteknik. (PTW)ORCID-id: 0000-0001-5734-294X
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för elektro- och automationsteknik. (PTW)ORCID-id: 0000-0002-4329-418X
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för elektro- och automationsteknik. (PTW)ORCID-id: 0000-0001-5608-8636
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för process- och produktutveckling. (PTW)
2008 (engelsk)Inngår i: Intelligent Robotics and ApplicationsLecture Notes in Computer Science Volume 5315,  2008: First International Conference, ICIRA 2008 Wuhan, China, October 15-17, 2008 Proceedings, Part II / [ed] Youlun Xioun, Springer, 2008, Vol. 5315 LNAI, nr PART 2, s. 398-407Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

The traditional fusion welding and fixture simulations are performed using advanced finite element simulation tools, commonly used are e.g. MSC.Marc, ANSYS, ABACUS and COMSOL Multiphysics. These simulations are made one at a time and separately due to heavy calculation load for each case. Such an approach does not give a full description of the integrated work piece and fixture behaviour. We propose a strategy to decrease the computational time and solve the problem accurately enough for industrial needs. Focus of the simulation result is on residual deformation. The work piece is a simplified component composed by metal sheets, and rigid and loose clamping was investigated. Simulation results give the size of forces and deformations in the clamped edge. Deformation measurements are performed using 3D-scanning of the work piece after cooling and released from fixture, same situation as in the FE-simulations. The proposed strategy has shown to be useful and is industrially competitive due to reduced engineering manpower, computation time, and need for practical experiments. The strategy is to use full off-line programming where computer aided robotics for weld sequencies is integrated with finite element modelling in order to obtain weld parameters and fixture design.

sted, utgiver, år, opplag, sider
Springer, 2008. Vol. 5315 LNAI, nr PART 2, s. 398-407
Serie
Lecture Notes in Computer Science, ISSN 0302-9743 ; 5315
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-1514DOI: 10.1007/978-3-540-88518-4_43OAI: oai:DiVA.org:hv-1514DiVA, id: diva2:216581
Konferanse
1st International Conference on Intelligent Robotics and Applications, ICIRA 2008; Wuhan; China; 15 October 2008 through 17 October 2008
Tilgjengelig fra: 2009-05-11 Laget: 2009-05-11 Sist oppdatert: 2016-02-11bibliografisk kontrollert
Inngår i avhandling
1. Simulation-based feedback control of welding processes
Åpne denne publikasjonen i ny fane eller vindu >>Simulation-based feedback control of welding processes
2008 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Fusion welding for joining of metals is an important manufacturing process widely used in industry, and very appreciated for its usefulness. This thesis presents a strategy dealing with the problem of designing feedback control for robotised welding. The idea is to use off-line programming where computer aided robotics for weld sequences is integrated with finite element modelling for simulations and analyses of weld processes. By this approach the design, evaluations, trials and visualisation can be made “off-line”, beside or prior to continuous production. The focus is to reduce the amount of manpower and need for physical experiments. Focuses on the results are to ensure a high quality weld with limited residual stress and deformation. Different models for two types of austenitic steels and two types of weld sources has been calibrated and validated to form a basis for this strategy. Suggestions for systematic model calibration methods have been proposed including global and local optimisation methods. Experimental work has been performed to support and verify the simulation results and the usefulness of the method. The simulation based strategy has been evaluated and proven to work successfully in two different types of applications. The method is not independent of physical experiments since it is based on models that have to be calibrated, but the experiments needed are assumed to be carried out in a simple and cost efficient way. The thesis suggests how these experiments can be performed. The use of all these technologies is assumed to form an efficient tool for the welding engineer in order to obtain high weld quality in robotised welding. The research presented indicates that the methods work well in real situations and that further work for more robust industrialisation will be beneficial for the welding community.

sted, utgiver, år, opplag, sider
Göteborg: Chalmers University of Technology, 2008. s. 109
Serie
Technical report / Department of Signals and Systems, Automation Research Group, Chalmers University of Technology, ISSN 1403-266X ; 2008:013
Emneord
Finite element modelling, Heat transfer, Model order reduction, Sensors, Weld simulation Controller design
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-2409 (URN)
Presentation
2008-10-03, C120, Gustava Melins gata 2, Trollhättan, 10:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2010-04-29 Laget: 2010-04-29 Sist oppdatert: 2016-02-09bibliografisk kontrollert
2. Modeling and simulation for welding automation
Åpne denne publikasjonen i ny fane eller vindu >>Modeling and simulation for welding automation
2010 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Göteborg: Chalmers, 2010. s. 158
Serie
Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; 3132
Emneord
welding automation, fixturing, finite element modeling, heat conduction, model order reduction, sensors, welding simulation, controller design
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-2870 (URN)978-91-7385-451-1 (ISBN)
Tilgjengelig fra: 2010-12-03 Laget: 2010-11-29 Sist oppdatert: 2023-02-28bibliografisk kontrollert

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