Theoretical and numerical aspects of the volumetric approach for fatigue life prediction in notched components

Adib, H.; Pluvinage, G.

doi:10.1016/s0142-1123(02)00040-3

Cited by 65 publications

(35 citation statements)

References 16 publications

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“…The local stresses, in turn, induce stress concentration, which can be assessed using plate or shell model assumptions. Alternatively, finite element methods (FEM) are used for local stress-based fatigue prediction, e.g., using the Neuber [2], the M olski-Glinka [3][4], the volumetric approach [5][6], etc.Three-dimensional finite element (3D FEM) stress analysis is applied to the most spot-welded joints, including tensile-shear, cross tension and peel-coal ones [7][8][9][10][11][12]. In this study, elastic-plastic 3D FEM analysis is applied to modeling of the mechanical behavior of mono point, triple points and multiple points in tensile-shear spot welds.…”

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Three-Dimensional Finite Element Analysis of Tensile-Shear Spot-Welded Joints in Tensile and Compressive Loading Conditions

Adib

Jeong²,

Pluvinage³

2004

Strength of Materials

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Трехмерный конечноэлементный анализ точечных сварных соединений в условиях растяжения и сжатия К лю чевы е слова: трехмерный конечноэлементный расчет, соединения с точечной сваркой, методика конечноэлементного субмоделирования, тонкие пластины, зазор, выпучивание.Introduction. Spot welding is one o f the most practical and reliable methods for fixing thin metal sheets together. One of the desirable characteristics of spot welding techniques is its application in robotization. Hence, spot welds are widely applied to produce thin sheet components, especially in the automotive and transport industries. Fatigue is one of the critical problems in the design of spot welds. The required local stress and strain parameters in welded joints are commonly obtained via calculation, measurements and experimental based results [1]. The local stresses, in turn, induce stress concentration, which can be assessed using plate or shell model assumptions. Alternatively, finite element methods (FEM) are used for local stress-based fatigue prediction, e.g., using the Neuber [2], the M olski-Glinka [3][4], the volumetric approach [5][6], etc.Three-dimensional finite element (3D FEM) stress analysis is applied to the most spot-welded joints, including tensile-shear, cross tension and peel-coal ones [7][8][9][10][11][12]. In this study, elastic-plastic 3D FEM analysis is applied to modeling of the mechanical behavior of mono point, triple points and multiple points in tensile-shear spot welds. The gap effects between two thin sheets are accounted for and compressive behavior of spot-welded joints is investigated.

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confidence: 99%

Three-Dimensional Finite Element Analysis of Tensile-Shear Spot-Welded Joints in Tensile and Compressive Loading Conditions

Adib

Jeong²,

Pluvinage³

2004

Strength of Materials

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“…In this approach, fatigue life prediction can be fulfilled using the reference curve of smooth specimen, mechanical properties and notch strength reduction factor values [1].…”

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“…Therefore, the fatigue strength reduction factor f k should be introduced. In fatigue design, diagram of amplitude stress versus the number of cycles also called S-N curve are frequently used [1].…”

Section: Introductionmentioning

confidence: 99%

Fatigue life estimation for different notched specimens based on the volumetric approach

Zehsaz

Hassanifard

Esmaeili

2010

EPJ Web of Conferences

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Abstract. In this paper, the effects of notch radius for different notched specimens has been studied on the values of stress concentration factor, notch strength reduction factor, and fatigue life duration of the specimens. The material which has been selected for this investigation is Al 2024 -T3 . Volumetric approach has been applied to obtain the values of notch strength reduction factor and results have been compared with those obtained from the Neuber and Peterson methods. Load controlled fatigue tests of mentioned specimens have been conducted on the 250kN servo-hydraulic Zwick/Amsler fatigue testing machine with the frequency of 10Hz. The fatigue lives of the specimens have also been predicted based on the available smooth S-N curve of Al2024-T3 and also the amounts of notch strength reduction factor which have been obtained from volumetric, Neuber and Peterson methods. The values of stress and strain around the notch roots are required to predict the fatigue life of notched specimens, so Ansys finite element code has been used and non-linear analyses have been performed to obtain the stress and strain distributions around the notches. The plastic deformations of the material have been simulated using multi-linear kinematic hardening and cyclic stress-strain relation. The work here shows that the volumetric approach does a very good job for predicting the fatigue life of the notched specimens.

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“…The volumetric approach is a semi-local method evaluating the elastoplastic fracture regime based on the numerical configuration of the so-called finite element method (Elminor 2003;Adib and Pluvinage 2003). This method was firstly applied at the Mechanical Reliability Laboratory of University of Metz.…”

Section: Introductionmentioning

confidence: 99%

Experimental–Numerical Characterization of the Fracture Behaviour of P264GH Steel Notched Pipes Subject to Internal Pressure

Moustabchir

Azari

Hariri

et al. 2017

Iran J Sci Technol Trans Mech Eng

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The rupture phenomenon of a mechanical structure requires critical consideration, because of its safety constructions. A detailed experiment of material features as well as the Young's modulus, yield strength, material toughness or fracture resistance provides useful information to predict the life integrity of a pipe structure. This paper presents the most accurate experimental techniques for characterization of a pipe-like structure to assess its reliability. Standard traction tests, dynamic Charpy tests and pressure tests were performed to envisage the crack propagation progress. Detailed information on fracture process was obtained by a robust numerical approach using the finite element method.

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Theoretical and numerical aspects of the volumetric approach for fatigue life prediction in notched components

Cited by 65 publications

References 16 publications

Three-Dimensional Finite Element Analysis of Tensile-Shear Spot-Welded Joints in Tensile and Compressive Loading Conditions

Three-Dimensional Finite Element Analysis of Tensile-Shear Spot-Welded Joints in Tensile and Compressive Loading Conditions

Fatigue life estimation for different notched specimens based on the volumetric approach

Experimental–Numerical Characterization of the Fracture Behaviour of P264GH Steel Notched Pipes Subject to Internal Pressure

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