kth.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Engineering rubber bushing stiffness formulas including dynamic amplitude dependence
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg.
2006 (Engelska)Licentiatavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Engineering design models for the torsion and axial dynamic stiffness of carbon black filled rubber bushings in the frequency domain including amplitude dependence are presented. They are founded on a developed material model which is the result of applying a separable elastic, viscoelastic and friction rubber component model to the material level. Moreover, the rubber model is applied to equivalent strains of the strain states inside the torsion or axial deformed bushing previously obtained by the classical linear theory of elasticity, thus yielding equivalent shear moduli which are inserted into analytical formulas for the stiffness. Therefore, unlike other simplified approaches, this procedure includes the Fletcher-Gent effect inside the bushing due to non-homogeneous strain states. The models are implemented in Matlab®. In addition, an experimental verification is carried out on a commercially available bushing thus confirming the accuracy of these models which become a fast engineering tool to design the most suitable rubber bushing to fulfil user requirements. Finally, they can be easily employed in multi-body and finite element simulations

Ort, förlag, år, upplaga, sidor
Stockholm: KTH , 2006. , s. 28
Serie
Trita-AVE, ISSN 1651-7660 ; 2006:36
Nationell ämneskategori
Tillförlitlighets- och kvalitetsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-4017OAI: oai:DiVA.org:kth-4017DiVA, id: diva2:10401
Presentation
2006-06-15, Sal MWL 74, KTH, Teknikringen 8, Stockholm, 10:30
Opponent
Handledare
Anmärkning
QC 20101112Tillgänglig från: 2006-06-01 Skapad: 2006-06-01 Senast uppdaterad: 2022-06-27Bibliografiskt granskad
Delarbeten
1. Torsion stiffness of a rubber bushing: a simple engineering design formula including amplitude dependence
Öppna denna publikation i ny flik eller fönster >>Torsion stiffness of a rubber bushing: a simple engineering design formula including amplitude dependence
2007 (Engelska)Ingår i: Journal of Strain Analysis for Engineering Design, ISSN 0309-3247, E-ISSN 2041-3130, Vol. 42, nr 1, s. 13-21Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

An engineering design formula for the torsion stiffness of a filled rubber bushing in the frequency domain, including the amplitude dependence, is presented. It is developed by applying a novel separable elastic, viscoelastic, and friction material model to an equivalent strain of the strain state inside the bushing, thus leading to an equivalent shear modulus that is inserted into an analytical formula for the torsion stiffness. The rubber model is the result of extending the force-displacement relation established in a sound rubber component model to the stress-strain level. Unlike other simplified methods, this procedure takes into account the variation in the properties inside the bushing owing to non-homogeneous strain states. Moreover, as this formula depends on the bushing geometry in addition to the material properties, it is a fast engineering tool to design the most suitable rubber bushing to fulfil user requirements. Furthermore, it is shown-by dividing the considered bushing into several slices, consequently each equivalent shear modulus is closer to the true value - that the approach of working with only one equivalent shear modulus for the whole bushing is accurate enough.

Nyckelord
filled rubber bushing, torsion stiffness, amplitude dependence, equivalent modulus
Nationell ämneskategori
Teknisk mekanik
Identifikatorer
urn:nbn:se:kth:diva-5874 (URN)10.1243/03093247JSA246 (DOI)000244122200002 ()2-s2.0-33846781423 (Scopus ID)
Anmärkning

QC 20101112

Tillgänglig från: 2006-06-01 Skapad: 2006-06-01 Senast uppdaterad: 2022-06-27Bibliografiskt granskad
2. Axial stiffness of carbon black filled rubber bushings frequency and amplitude dependence
Öppna denna publikation i ny flik eller fönster >>Axial stiffness of carbon black filled rubber bushings frequency and amplitude dependence
2007 (Engelska)Ingår i: Kautschuk und Gummi, Kunststoffe, ISSN 0022-9520, Vol. 60, nr 1-2, s. 43-48Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A simple engineering model for the axial dynamic stiffness of carbon black filled rubber bushings in the frequency domain including amplitude dependence is presented. The axial stiffness is calculated by applying a newly developed rubber model to an equivalent strain of the strain state inside the bushing, thus yielding an equivalent shear modulus which is inserted into an analytical formula for the stiffness. Therefore, this procedure includes the Fletcher-Gent effect inside the bushing due to non-homogeneous strain states. An experimental verification is carried out on a commercially available bushing. Firstly, the model parameters are obtained from two different experiments: elastic and friction parameters are achieved from one quasistatic test performed at 0.1 Hz and 1 mm amplitude, while frequency dependence parameters are obtained from one dynamic test at 0.1 mm of amplitude over a frequency range from 1 to 100 Hz. Secondly, new dynamic tests at five amplitudes are performed on the same bushing and the results are compared to those of the model showing good agreements.

Nyckelord
Amplitude dependence, Bushing measurement, Carbon black, Dynamic stiffness, Fletcher-Gent effect, Rubber bushing
Nationell ämneskategori
Teknisk mekanik
Identifikatorer
urn:nbn:se:kth:diva-5875 (URN)000244438600006 ()2-s2.0-33847278846 (Scopus ID)
Anmärkning

QC 20101112

Tillgänglig från: 2006-06-01 Skapad: 2006-06-01 Senast uppdaterad: 2022-06-27Bibliografiskt granskad

Open Access i DiVA

fulltext(272 kB)38035 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 272 kBChecksumma SHA-1
878e9bebcdc435d30395a6529cfcb1c26503f678189eef65f9215a2bbcb2eff42efaa1de
Typ fulltextMimetyp application/pdf

Sök vidare i DiVA

Av författaren/redaktören
Garcia, Maria-José
Av organisationen
Farkost och flyg
Tillförlitlighets- och kvalitetsteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 41622 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 3233 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf