Finite element models of spot welds in structural dynamics: review and updating

Palmonella, Matteo; Friswell, Michael I.; Mottershead, John E.; Lees, Arthur W.

doi:10.1016/j.compstruc.2004.11.003

Cited by 83 publications

(57 citation statements)

References 22 publications

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“…Over the past few decades, various finite element (FE) models of spot welds have been proposed for static and dynamic structural analysis (Palmonella et al 2005;Radakovic and Tumuluru. 2012).…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 21mentioning

confidence: 99%

Finite Element Method Based Modeling of Resistance Spot-Welded Mild Steel

Zaoui

Hadjoui

2016

Lat. Am. j. solids struct.

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This paper deals with Finite Element refined and simplified models of a mild steel spot-welded specimen, developed and validated based on quasi-static cross-tensile experimental tests. The first model was constructed with a fine discretization of the metal sheet and the spot weld was defined as a special geometric zone of the specimen. This model provided, in combination with experimental tests, the input data for the development of the second model, which was constructed with respect to the mesh size used in the complete car finite element model. This simplified model was developed with coarse shell elements and a spring-type beam element was used to model the spot weld behavior. The global accuracy of the two models was checked by comparing simulated and experimental load-displacement curves and by studying the specimen deformed shapes and the plastic deformation growth in the metal sheets. The obtained results show that both fine and coarse finite element models permit a good prediction of the experimental tests.

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Section: Latin American Journal Of Solids and Structures 13 (2016) 21mentioning

confidence: 99%

Finite Element Method Based Modeling of Resistance Spot-Welded Mild Steel

Zaoui

Hadjoui

2016

Lat. Am. j. solids struct.

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“…Furthermore, finite element model updating is already considered as an important subject to design, in terms of construction and maintenance of mechanical systems and civil engineering structures [10] since it is viewed as a convenient tool for analysing and predicting the dynamic performance of various structures [11][12][13][14][15]. For example, Mottershead and Friswell with their partners have done quite a study of model updating using FEA and have proven the reliability of finite element model in providing desired outcomes [4,[16][17][18][19]. The EMA is the classic method of obtaining the modal parameter of a certain structure [20].…”

Section: Introductionmentioning

confidence: 99%

Dynamics properties of a Go-kart chassis structure and its prediction improvement using model updating approach

Abdullah

Sani

Husain

et al. 2017

Int. J. Automot. Mech. Eng.

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Model updating is concerned about the correction of finite element models by processing the record of dynamic response from test structures in order to have an accurate model for any simulated analysis. Finite element model updating had emerged years ago as an important subject in structural dynamics. It has been used frequently and has been successfully applied to many fields especially in detecting the dynamic stiffness of a structure. The purpose of this study is to perform model updating of a go-kart chassis structure in order to reduce the percentage of error between the experimental modal analysis (EMA) and finite element analysis (FEA). Modal properties (natural frequency, mode shapes, and damping ratio) of the go-kart chassis structure were determined using both EMA and FEA. Correlation of the modal parameters gathered in FEA and EMA was carried out before optimizing the data from finite element. By adjusting the selective parameters, incongruities between those two analyses are generally reduced. The sensitivity of selected parameters is also obtained. The significant reduction in percentage of error before and after model updating procedure was carried out in this study clearly shows that model updating technique is a reliable method in reducing the discrepancies between EMA and FEA. Therefore, in cases of high discrepancies between analytical and actual test data, model updating can be considered as an option in order to obtain better correlation between those two sets of data.

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“…Today, Computer-Aided Engineering (CAE) is known as a necessary technique which helps the engineers to remarkably save time and money in the design and manufacturing process. In the recent years, a wide range of studies have been carried out to develop Finite Element (FE) analyses as alternatives of the experimental conventional procedures of automotive design such as (Noise, Vibration and Harshness) NVH Sobieski et al (2001), safety Shin et al (2012) and strength Palmonella et al (2005).…”

Section: Introductionmentioning

confidence: 99%