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A look at the optimization of robot welding speed based on process modelling
University West, Department of Technology, Mathematics and Computer Science.ORCID iD: 0000-0002-4329-418X
University West, Department of Technology, Mathematics and Computer Science.ORCID iD: 0000-0001-7787-5444
2007 (English)In: Welding Journal, ISSN 0043-2296, Vol. 86, no 8, p. 238-244Article in journal (Refereed) Published
Abstract [en]

Simulation tools to search for optimal process parameters are of great interest to reduce the number of experiments and thereby reduce cost and production time. In this paper, robot simulation has been used in combination with finite element simulations to optimize robot speed in order to minimize distortion while keeping complete joint penetration. In an earlier work performed by the authors, a finite element model was developed to predict heat transfer and residual stresses of parts with complex shapes. An interface between a robot simulation model and a finite element analysis model was also constructed. In this paper, an iterative method for robot speed optimization has been developed using MATLAB. The algorithm is designed to maintain complete joint penetration while maximizing productivity by utilizing the fastest weld speed. The method makes it possible to optimize the heat input to the component and thereby minimize component deformation for parts with complex shapes. The system was evaluated on stainless steel plates with varying thicknesses. Robot weld paths were defined off line and automatically downloaded to the finite element software where the optimization was performed. Simulations and experimental validations are presented.

Place, publisher, year, edition, pages
2007. Vol. 86, no 8, p. 238-244
Keywords [en]
Finite Element Analysis (FEA); Off-Line Programming (OLP); Robot simulation; Temperature; Weld velocity; Welding speed; Computer simulation; Finite element method; Optimization; Parameter estimation; Process control; Robotics; Thermal effects
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-2571OAI: oai:DiVA.org:hv-2571DiVA, id: diva2:326631
Available from: 2010-06-23 Created: 2010-06-23 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Simulation fo Robot Paths and Heat Effects in Welding
Open this publication in new window or tab >>Simulation fo Robot Paths and Heat Effects in Welding
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Trollhättan: Högskolan Väst, 2006. p. 160
Keywords
Robotics, Svetsning, robotteknik
National Category
Other Engineering and Technologies not elsewhere specified
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-2575 (URN)91-628-6869-1 (ISBN)978-91-628-6869-7 (ISBN)
Note
Diss. Lund : Lunds universitet, 2006Available from: 2010-06-30 Created: 2010-06-24 Last updated: 2014-05-08Bibliographically approved

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Ericsson, MikaelNylén, Per

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