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A robust spot weld model for structural vibration analysis

A robust spot weld model for structural vibration analysis
A robust spot weld model for structural vibration analysis
A finite element spot weld is proposed. The model is only weakly sensitive to element size, in contrast to some existing models, for which predictions of the static and dynamic responses can be strongly sensitive to the size of the elements in the substructures to which the spot weld is connected, to such an extent that numerical results may not converge. The proposed model comprises a number of multipoint constraint connections to the attached substructures, so that they may have incompatible meshes. It involves stiffness elements distributed around the perimeter of the spot weld. The case of two plates connected by three spot welds is considered. Numerical results are presented and compared with those of CWELD models and with experimental measurements. The results from the proposed spot weld model show good accuracy, low sensitivity to the element dimensions and good convergence properties.
finite element analysis, spot weld, sensitivity, structural dynamics, robustness
0168-874X
1-7
De Alba, R.O.
9e42a69e-9f6a-4806-b302-1ceb53421784
Ferguson, N.S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe
De Alba, R.O.
9e42a69e-9f6a-4806-b302-1ceb53421784
Ferguson, N.S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Mace, B.R.
cfb883c3-2211-4f3a-b7f3-d5beb9baaefe

De Alba, R.O., Ferguson, N.S. and Mace, B.R. (2014) A robust spot weld model for structural vibration analysis. Finite Elements in Analysis and Design, 89, 1-7. (doi:10.1016/j.finel.2014.04.010).

Record type: Article

Abstract

A finite element spot weld is proposed. The model is only weakly sensitive to element size, in contrast to some existing models, for which predictions of the static and dynamic responses can be strongly sensitive to the size of the elements in the substructures to which the spot weld is connected, to such an extent that numerical results may not converge. The proposed model comprises a number of multipoint constraint connections to the attached substructures, so that they may have incompatible meshes. It involves stiffness elements distributed around the perimeter of the spot weld. The case of two plates connected by three spot welds is considered. Numerical results are presented and compared with those of CWELD models and with experimental measurements. The results from the proposed spot weld model show good accuracy, low sensitivity to the element dimensions and good convergence properties.

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More information

Published date: 15 October 2014
Keywords: finite element analysis, spot weld, sensitivity, structural dynamics, robustness
Organisations: Dynamics Group

Identifiers

Local EPrints ID: 366439
URI: https://eprints.soton.ac.uk/id/eprint/366439
ISSN: 0168-874X
PURE UUID: 1a998c32-3ad6-4a97-b5ad-97660c22450c
ORCID for N.S. Ferguson: ORCID iD orcid.org/0000-0001-5955-7477
ORCID for B.R. Mace: ORCID iD orcid.org/0000-0003-3312-4918

Catalogue record

Date deposited: 01 Jul 2014 13:32
Last modified: 20 Jul 2019 01:29

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Contributors

Author: R.O. De Alba
Author: N.S. Ferguson ORCID iD
Author: B.R. Mace ORCID iD

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