An analytical procedure for the evaluation of the elastic-plastic stiffness behaviour of spot welded joints is presented. The procedure is based on a new model of spot weld region: a circular plate having variable thickness with a central rigid nugget, which is resolved using an original analytical method. The closed-form solution allows to describe the displacement of a rigid nugget when an axial orthogonal load is applied on the plate while plasticity and large deflections are present. The goal is to reach a reliable spot weld region model which can be used as the basis to develop a spot weld element in FE analysis even when plasticity and large deflections are in effect. The procedure is as completely original as no other can be found in the technical literature, and it has been applied to some examples of plates usually employed for spot weld analysis. The analytical results obtained by using the new general relations precisely match those obtained modelling spot weld area by FEA. (c) 2008 Elsevier Ltd. All rights reserved.

Vivio, F., Fanelli, P. (2009). A new analytical model for the elastic-plastic behaviour of spot welded joints subjected to orthogonal load. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 46(3-4), 572-586 [10.1016/j.ijsolstr.2008.09.006].

A new analytical model for the elastic-plastic behaviour of spot welded joints subjected to orthogonal load

VIVIO, FRANCESCO;
2009-01-01

Abstract

An analytical procedure for the evaluation of the elastic-plastic stiffness behaviour of spot welded joints is presented. The procedure is based on a new model of spot weld region: a circular plate having variable thickness with a central rigid nugget, which is resolved using an original analytical method. The closed-form solution allows to describe the displacement of a rigid nugget when an axial orthogonal load is applied on the plate while plasticity and large deflections are present. The goal is to reach a reliable spot weld region model which can be used as the basis to develop a spot weld element in FE analysis even when plasticity and large deflections are in effect. The procedure is as completely original as no other can be found in the technical literature, and it has been applied to some examples of plates usually employed for spot weld analysis. The analytical results obtained by using the new general relations precisely match those obtained modelling spot weld area by FEA. (c) 2008 Elsevier Ltd. All rights reserved.
2009
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/14 - PROGETTAZIONE MECCANICA E COSTRUZIONE DI MACCHINE
English
Con Impact Factor ISI
Analytical method; Elastic-plastic large deflection behaviour; Spot weld; Variable thickness circular plate
Vivio, F., Fanelli, P. (2009). A new analytical model for the elastic-plastic behaviour of spot welded joints subjected to orthogonal load. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 46(3-4), 572-586 [10.1016/j.ijsolstr.2008.09.006].
Vivio, F; Fanelli, P
Articolo su rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/40531
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