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On the frequency, dynamic strain amplitude, prestrain, temperature and magnetic field strength dependence of magneto-sensitive elastomers
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2012. , viii, 37 p.
Series
Trita-AVE, ISSN 1651-7660 ; 2012:23
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-95218ISBN: 978-91-7501-369-5 (print)OAI: oai:DiVA.org:kth-95218DiVA: diva2:527280
Public defence
2012-06-08, E3, Osquars Backe 14, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Funder
TrenOp, Transport Research Environment with Novel Perspectives
Note

QC 20120522

Available from: 2012-05-22 Created: 2012-05-18 Last updated: 2013-04-11Bibliographically approved
List of papers
1. Preload, frequency, vibrational amplitude and magnetic field strength dependence of magnetosensitive rubber
Open this publication in new window or tab >>Preload, frequency, vibrational amplitude and magnetic field strength dependence of magnetosensitive rubber
2009 (English)In: Plastics, rubber and composites, ISSN 1465-8011, E-ISSN 1743-2898, Vol. 38, no 8, 321-326 p.Article in journal (Refereed) Published
Abstract [en]

The preload dependence of magnetosensitive rubber is experimentally studied along with the influence of frequency, vibrational amplitude and magnetic field strength. The material studied is an iron particle filled natural rubber with a volume particle fraction of 33%, which is close to the optimal particle concentration. The results of the measurements show that an increased preload decreases the influence of magnetic field strength and they also suggest that an increase in the magnetic field reduces the influence of the preload. Measurements of the magnitude of the dynamic shear modulus also display a preload dependence. These results imply that in a description of these materials, the preload should be taken into account, especially since magnetosensitive elastomers are used in applications where they are often exposed to preloads.

Keyword
Magnetosensitive rubber, Preload dependence, Frequency dependence, Vibrational amplitude dependence, Magnetic field strength dependence, magnetorheological elastomers, sensitive rubber, deformations, range, model
National Category
Applied Mechanics
Identifiers
urn:nbn:se:kth:diva-18941 (URN)10.1179/146580109x12473409436823 (DOI)000271624600003 ()2-s2.0-73249127955 (Scopus ID)
Note

QC 20100525

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
2. An experimental study in the audible frequency range of the prestrain, dynamic strain amplitude, frequency and magnetic field strength dependence of magneto-sensitive rubber
Open this publication in new window or tab >>An experimental study in the audible frequency range of the prestrain, dynamic strain amplitude, frequency and magnetic field strength dependence of magneto-sensitive rubber
(English)In: Kautschuk und Gummi, Kunststoffe, ISSN 0022-9520Article in journal (Other academic) Submitted
National Category
Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:kth:diva-95212 (URN)
Note
QS 2012Available from: 2012-05-18 Created: 2012-05-18 Last updated: 2017-12-07Bibliographically approved
3. Measurements on the Temperature, Dynamic Strain Amplitude and Magnetic Field Strength Dependence of the Dynamic Shear Modulus of Magnetosensitive Elastomers in a Wide Frequency Range
Open this publication in new window or tab >>Measurements on the Temperature, Dynamic Strain Amplitude and Magnetic Field Strength Dependence of the Dynamic Shear Modulus of Magnetosensitive Elastomers in a Wide Frequency Range
2013 (English)In: Journal of Vibration and Acoustics-Transactions of the ASME, ISSN 1048-9002, E-ISSN 1528-8927, Vol. 135, no 6, 064506- p.Article in journal (Refereed) Published
Abstract [en]

A measurement study is conducted to investigate how changes in temperature, dynamic strain amplitude, and magnetic field strength influence the behavior of a magnetosensitive material. During the measurements seven temperatures, four magnetic fields, and three dynamic strain amplitudes are used over a 200 to 800 Hz frequency range. The results indicate a decrease in shear modulus magnitude as the dynamic strain amplitude is increased. As the frequency and magnetic field strength increases the magnitude increases. However, the measurements indicate that the temperature is the most influential of the parameters as the material stiffens significantly when the temperature reaches the transition phase. Understanding the temperature dependence increases the knowledge of magnetosensitive materials.

Keyword
Magnetorheological Elastomers, Viscoelastic Properties, Mechanical-Behavior, Rubber, Model
National Category
Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:kth:diva-95213 (URN)10.1115/1.4025063 (DOI)000326651000020 ()2-s2.0-84889040094 (Scopus ID)
Funder
Swedish Research Council, 621-2005-5778
Note

QC 20131217. Updated from submitted to published.

Available from: 2012-05-18 Created: 2012-05-18 Last updated: 2017-12-07Bibliographically approved
4. A non-linear wide frequency model of the dynamic shear modulus dependence on temperature, prestrain, dynamic strain amplitude and magnetic field for magneto-sensitive rubber
Open this publication in new window or tab >>A non-linear wide frequency model of the dynamic shear modulus dependence on temperature, prestrain, dynamic strain amplitude and magnetic field for magneto-sensitive rubber
(English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568Article in journal (Other academic) Submitted
National Category
Fluid Mechanics and Acoustics
Identifiers
urn:nbn:se:kth:diva-95214 (URN)
Note
QS 2012Available from: 2012-05-18 Created: 2012-05-18 Last updated: 2017-12-07Bibliographically approved

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