Evaluation of bonded and bolted repair techniques with finite element method

Çalışkan, Mehmet Kemal

doi:10.1016/j.matdes.2006.01.024

Cited by 22 publications

(8 citation statements)

References 16 publications

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“…• bez udziału śruby, z oddziaływaniem siłowym napięcia wstępnego [5,35], • płaskie [33,34], • ze śrubą modelowaną za pomocą elementu typu GAP [18], • ze śrubą, w której trzpień śruby modeluje się jako element belkowy, natomiast jej łeb -jako element odkształcalny lub sztywny [15,21,22], • przestrzenne [24,27,36].…”

Section: Podstawy Analizyunclassified

Numerical investigation on the effect of externally exerted loads on particular bolts forces in the multi-bolted flange joint

Grzejda¹

2015

Mechanik

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Rys. 1. Przykład kołnierzowego połączenia wielośrubowego• zbioru śrub, • kołnierzowego elementu łączonego, • warstwy stykowej znajdującej się pomiędzy elementem łą-czonym a ostoją.Dzięki takiemu podejściu każdy podukład może być modelowany i rozwijany oddzielnie.W niniejszej pracy przedstawiono kontynuację badań nad opisanym modelem, a jej celem jest rozwój modelowania podukładu śrub jako części układu wielośrubowego. Rozważania ograniczono do badania wpływu uproszczeń w modelu pojedynczego złącza śrubowego [11] na siły w śrubach w połączeniu obciążonym zewnętrznie siłą eksploatacyjną. Wszystkie analizy przeprowadzono w programie Midas NFX 2014 [20] służącym do obliczania układów liniowych i nieliniowych, obciążonych siłami statycznymi lub dynamicznymi. Podstawy analizyJednym z ważnych zagadnień w przypadku połączenia śrubowego jest analiza obciążenia śrub tworzących to połą-czenie. Biorąc pod uwagę zależności wynikające z wykresu przeciwsobnego połączenia śrubowego, wartość obciążenia roboczego w śrubach F s można wyznaczyć ze wzoru [13]:(1) gdzie: F m -napięcie wstępne, F e -obciążenie zewnętrzne, e s -podatność śruby, e p -podatność kołnierza.Gdy śruby potraktuje się jako elementy liniowe, ich podatność można wyznaczyć w prosty sposób, np. podany w normie VDI 2230 [8]. Z kolei podatność elementów łączonych coraz częściej wyznacza się za pomocą MES, przy czym na ogół stosuje się następujące modele:

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Section: Podstawy Analizyunclassified

Numerical investigation on the effect of externally exerted loads on particular bolts forces in the multi-bolted flange joint

Grzejda¹

2015

Mechanik

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“…• no-bolt models [5], • spring models [19,21], • truss models [9,30], • beam models [11,16,31], • rigid body bolt models [14,25,26], • spider bolt models [18].…”

Section: Introductionmentioning

confidence: 99%

Determination of Bolt Forces and Normal Contact Pressure Between Elements in the System with Many Bolts for its Assembly Conditions

Grzejda¹

2019

Adv. Sci. Technol. Res. J.

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The paper put forward a thesis that modelling dissymmetric non-linear multi-bolted connections as a system is possible. Modelling of the systems composed of four subsystems on the assembly state was presented. These subsystems included: a couple of joined elements (a flange and a support), a contact layer between them, and bolts. The physical model of the system was described considering the tightening of bolts according to a specific sequence. In this model: the flange and the support were built using spatial finite elements, the contact layer was formed as the non-linear Winkler model, and the bolts were replaced with simplified models made of flexible beams. The calculation model which can be applied to determine the changes in bolt forces, as well as in the normal contact pressure between the joined elements during the tightening of the system and at its end, was presented. The results of sample calculations for the selected multi-bolted system were shown.

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“…Therefore, the metal-ceramic FGMs can be a potential candidate for heat shorts blocking joints. Finite element analysis (FEA) has been widely used to analyze the thermal and mechanical properties of the joints [16][17][18], since the method through experimental study to obtain the properties of the metal-ceramic functionally graded bolted joint (FGBJ) is accurate but time-consuming, so the theoretical simulation and optimization would be rather important for the successful implementation of metal-ceramic functionally graded jointing technology in a wide variety of application.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of the porous ZrO 2 /(ZrO 2 +Ni) ceramic joint with load bearing–heat insulation integration

Zhou

Zhang

Fang

2016

Ceramics International

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The joining of ceramics with metals is widely used in aerospace engineering where high strength and excellent heat insulation materials are desired. In this paper, a new multifunctional bolted joint with load bearing-heat insulation integration is prepared with porous ZrO2/(ZrO2+Ni) sandwich ceramics. Doubleshear behavior of the bolted joint connecting C/SiC plates is analyzed by ABAQUS codes. It is found that shearing damage occurs at shearing faces of the bolt, the shearing failure faces are layered rather than smooth. To improve its shearing strength, we introduce the shear band (ZrO2+V%Ni of thickness h) to its shearing faces. Results show that the shear band can improve the shearing strength and slow down the attenuation of load bearing capacity after reaching the shearing strength, without obviously increasing the thermal conductivity. An optimal structural design is performed and proper shear band is defined to balance the shearing strength and heat insulation performance of the ceramic joint.

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Evaluation of bonded and bolted repair techniques with finite element method

Cited by 22 publications

References 16 publications

Numerical investigation on the effect of externally exerted loads on particular bolts forces in the multi-bolted flange joint

Numerical investigation on the effect of externally exerted loads on particular bolts forces in the multi-bolted flange joint

Determination of Bolt Forces and Normal Contact Pressure Between Elements in the System with Many Bolts for its Assembly Conditions

Design and analysis of the porous ZrO 2 /(ZrO 2 +Ni) ceramic joint with load bearing–heat insulation integration

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