Computationally effective spot‐weld fatigue life estimation for vehicle components

Zigo, Milan; Arslan, Eray; Mack, Werner; Kepplinger, Gerhard

doi:10.1002/pamm.201900137

Cited by 3 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Farrahi et al [21] carried out hybrid multi-body dynamics and finite element analysis for the body-in-white simulations and spot-weld failures. Zigo et al [22] investigated FEbased fatigue life estimation of spot-welded structures by using a PSD function obtained using Dirlik method, where the Smith-Watson-Topper parameter was employed for the damage and life calculations. Akbulut [23] examined hybrid finite element analysis-a life assessment method in which strain-based fatigue calculations were performed after FE simulations of a welded components.…”

Section: Introductionmentioning

confidence: 99%

Failure Analysis of Resistance Spot-Welded Structure Using XFEM: Lifetime Assessment

Demiral,

Duran

2023

Applied Sciences

View full text Add to dashboard Cite

Due to their effective and affordable joining capabilities, resistance spot-welded (RSW) structures are widely used in many industries, including the automotive, aerospace, and manufacturing sectors. Because spot-welded structures are frequently subjected to cyclic stress conditions while in service, fatigue failure is a serious concern. It is essential to comprehend and predict their fatigue behavior in order to guarantee the dependability and durability of the relevant engineering products. The analysis of fatigue failure in spot-welded structures is the main topic of this paper, along with the prediction of fatigue life (Nf) and identification of failure mechanisms. Also, the effects of parameters such as the amount of cyclic load applied, the load ratio, and size of the spot-welding on the Nf were investigated. To achieve this, the fatigue performance of spot-welded joints was simulated using the extended finite element method (XFEM). The XFEM method is particularly suited for capturing intricate crack patterns in spot-welded structures because it allows for the modeling of crack propagation without the need for remeshing. It was observed that when the cycling load was decreased by 20%, Nf increased by around 250%. On the other hand, the fatigue life of the structure, and, hence, the crack propagation rate, was significantly affected by the load ratio and diameter of the spot-welding. This paper presents the details of the novel approach to studying spot-weld fatigue characterization using XFEMs to simulate crack propagation.

show abstract

Section: Introductionmentioning

confidence: 99%

Failure Analysis of Resistance Spot-Welded Structure Using XFEM: Lifetime Assessment

Demiral,

Duran

2023

Applied Sciences

View full text Add to dashboard Cite

show abstract

Comparing and validating the numerical modeling of spot-welded fatigue failure using FEM and XFEM methods for HCF

Tolga Duran,

Demiral

2024

Engineering Failure Analysis

View full text Add to dashboard Cite

Sensitivity of Solid Element Spot Weld Modeling Methodology to Nugget Diameter

Duran¹

2022

SAE Int. J. Adv. & Curr. Prac. in Mobility

View full text Add to dashboard Cite

<div class="section abstract"><div class="htmlview paragraph">A vehicle’s structure has more than 4000 spot welds, which can be considered as one of the main design criteria that affects the general stiffness as well as the durability of an automobile. Considering the essential role of finite element-based simulations of the spot-welded structures on the design phases of vehicle development, accuracy of analyses can be considered as one of the main concerns to meet the design objectives. This study examines the sensitivity of solid element spot weld modeling technique to nugget diameter. Comparative stress and multi-axial low cycle fatigue analyses are conducted for the inspection of the effect of weld diameter on solid element spot weld simulations. Displacement contours as well as local stress profiles at the vicinity of the spot welds are examined to evaluate the effect of nugget diameter on general stiffness and safety. Multi-axial low cycle fatigue analyses are conducted for the specimens composed of U-profiles, and different thickness levels are simulated for a set of nugget diameters. Simulation results are compared with the low cycle fatigue tests’ life cycles to determine the accuracy of the solid element spot weld modeling methodology and its sensitivity to nugget diameter.</div></div>

show abstract

Computationally effective spot‐weld fatigue life estimation for vehicle components

Cited by 3 publications

References 5 publications

Failure Analysis of Resistance Spot-Welded Structure Using XFEM: Lifetime Assessment

Failure Analysis of Resistance Spot-Welded Structure Using XFEM: Lifetime Assessment

Comparing and validating the numerical modeling of spot-welded fatigue failure using FEM and XFEM methods for HCF

Sensitivity of Solid Element Spot Weld Modeling Methodology to Nugget Diameter

Contact Info

Product

Resources

About