Invisible elastic bolt model concept for finite element analysis of bolted connections

Razavi, Hadi; Abolmaali, Ali; Ghassemieh, Mehdi

doi:10.1016/j.jcsr.2006.07.003

Cited by 9 publications

(3 citation statements)

References 21 publications

(28 reference statements)

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“…This oscilla tion is likely due to the high stress and strain gradient inherent to the complex geometry of cancellous bones in this region [37]. Moreover, because of the nonlinear nature of the problem, the convergence of such FE models based on mesh refinement is not monotonically guaranteed [21,38,39], It could be hypothesized that in the next mesh refinement (if the original bone sample was scanned at 10 qm), both the third principal strain and third princi pal stress would reach a convergence. However, this needs to be further investigated.…”

Section: Discussionmentioning

confidence: 99%

Large-Scale Finite Element Analysis of Human Cancellous Bone Tissue Micro Computer Tomography Data: A Convergence Study

Chen

Pani

Taddei

et al. 2014

Journal of Biomechanical Engineering

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The complex geometry of cancellous bone tissue makes it difficult to generate finite element (FE) models. Only a few studies investigated the convergence behavior at the tissue scale using Cartesian meshes. However, these studies were not conducted according to an ideal patch test and the postelastic convergence behavior was not reported. In this study, the third principal strain and stress, and the displacement obtained from human micro finite element (microFE) models of lower resolutions were compared against the model of 19.5 μm as a reference, representing the original spatial resolution of microCT data. Uni-axial compression simulations using both linear-elastic and nonlinear constitutive equations were performed. The results showed a decrease in percentage difference in all three values as the element size decreased, with the displacement converging the fastest among the three. Simulations carried out using a nonlinear constitutive equation however, failed to show convergence for the third principal strains and stresses. It was concluded that at the tissue level, Cartesian meshes of human cancellous bone tissue were able to reach a converged solution in all three parameters investigated for linear simulation and only in displacement for nonlinear simulation. These parameters can be used as references in the future for studies in local biomechanical behavior of human cancellous bone tissues with linear simulation. The convergence behavior for human cancellous bone tissue using nonlinear constitutive equations needs further investigation.

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Section: Discussionmentioning

confidence: 99%

Large-Scale Finite Element Analysis of Human Cancellous Bone Tissue Micro Computer Tomography Data: A Convergence Study

Chen

Pani

Taddei

et al. 2014

Journal of Biomechanical Engineering

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“…Sherbourne y Bahaari (1997) utilizaron elementos viga conectados por elementos rígidos, sometidos a tensiones de compresión. Abolmaali et al (2005) y Razavi et al (2007) utilizaron un elemento de pretensado (PRETS179, incluido en el programa ANSYS), introduciendo una precarga del 70% de la resistencia última de los tornillos. Pirmoz et al (2008) incluyen el análisis térmico con variaciones de temperatura para introducir tensiones equivalentes al efecto del apriete.…”

Section: Ley Constitutiva Del Materialsunclassified

“…x Para modelar correctamente una unión atornillada es necesario aplicar una precarga a los tornillos para simular el apriete. Para ello, se pueden utilizar: elementos viga conectados por elementos rígidos sometidos a tensiones de compresión (Sherbourne y Bahaari, 1997), elementos de pretensado (Abolmaali et al, 2005;Razavi et al, 2007), análisis térmico con variaciones de temperatura para introducir tensiones equivalentes al efecto del apriete (Pirmoz et al, 2008), etc.…”

Section: Conclusionesunclassified

Diseño optimo de uniones semirrígidas mediante simulación numérica y modelos kriging

Gómez¹

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Quiero agradecer al Dr. Pascual Martí Montrull la confianza prestada, su dedicación, su colaboración, sus consejos y, sobre todo, su paciencia para llevar a buen término esta tesis doctoral. A Mariano, por ser la persona que ha compartido el mayor tiempo a mi lado, por su paciencia, consejos y compresión, y porque sin él no habría podido finalizar esta tesis. A mis padres, hermanos, cuñados, sobrina, tíos, suegros, y amigos quiero expresar mi más sincero agradecimiento, porque a pesar de la distancia, sus consejos, ánimo, apoyo y alegría me dan la fuerza necesaria para seguir hacia delante.

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Enhancement of fatigue life of net section in fitted bolt connections

Maximov

Duncheva

Ganev

2012

Journal of Constructional Steel Research

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Invisible elastic bolt model concept for finite element analysis of bolted connections

Cited by 9 publications

References 21 publications

Large-Scale Finite Element Analysis of Human Cancellous Bone Tissue Micro Computer Tomography Data: A Convergence Study

Large-Scale Finite Element Analysis of Human Cancellous Bone Tissue Micro Computer Tomography Data: A Convergence Study

Diseño optimo de uniones semirrígidas mediante simulación numérica y modelos kriging

Enhancement of fatigue life of net section in fitted bolt connections

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