Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications

Lasse Lamula, Heikki Parviainen, Kari Saarinen, Tomi Lindroos

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

Mechanical vibration causes problems in many applications. Vibration damping of mechanical structures is of interest in relation to noise, vibration and strength of structures and it includes both internal material damping and the additional damping caused by the whole mechanical structure. High damping epoxies are visco-elastic vibration damping materials that were developed by VTT Technical Research Centre of Finland in cooperation with Noisetek. The most efficient way to prevent the harmful effects of vibration is to increase damping using constrained-layer systems that provide weight-efficient, high-level damping even for heavy machinery structures. Utilization of this adjustable epoxy based vibration damping material is based on accurate control of location of its glass transition temperature (Tg) region. In the middle of Tg the maximum mechanical damping is achieved the measured loss factor values for developed epoxies varies from 1.3 to 1.7. In practice, the properties of a given cured epoxy system are designed so that the maximum peak of damping is set to appear in the property window of predetermined thermal and mechanical vibration conditions. Temperature and frequency dependent material properties of high damping epoxies were measured (DMTA). Based on these measurements visco-elastic model for describing frequency temperature dependent properties is developed. Accurate material model enables to use of FE modeling tools to simulate efficiency of different damping treatments on vibration behaviour of real structures.
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publication18th International Congress on Sound and Vibration 2011, ICSV 19
EditorsMalcolm J. Crocker, Marek Pawelczyk, Nickolay Ivanov
PublisherInternational Institute of Acoustics and Vibration IIAV
Pages2198-2205
Volume3
ISBN (Print)978-1-61839-259-6
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
Event18th International Congress on Sound & Vibration, ICSV18 - Rio de Janeiro, Brazil
Duration: 10 Jul 201114 Jul 2011

Conference

Conference18th International Congress on Sound & Vibration, ICSV18
Abbreviated titleICSV18
CountryBrazil
CityRio de Janeiro
Period10/07/1114/07/11

Fingerprint

Damping
Vibrations (mechanical)
Machinery
Materials properties
Temperature

Keywords

  • noise
  • vibration
  • damping
  • constrained-layer
  • epoxy

Cite this

Lamula, L., Parviainen, H., Saarinen, K., & Lindroos, T. (2011). Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications. In M. J. Crocker, M. Pawelczyk, & N. Ivanov (Eds.), Proceedings: 18th International Congress on Sound and Vibration 2011, ICSV 19 (Vol. 3, pp. 2198-2205). International Institute of Acoustics and Vibration IIAV.
Lamula, Lasse ; Parviainen, Heikki ; Saarinen, Kari ; Lindroos, Tomi. / Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications. Proceedings: 18th International Congress on Sound and Vibration 2011, ICSV 19. editor / Malcolm J. Crocker ; Marek Pawelczyk ; Nickolay Ivanov . Vol. 3 International Institute of Acoustics and Vibration IIAV, 2011. pp. 2198-2205
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abstract = "Mechanical vibration causes problems in many applications. Vibration damping of mechanical structures is of interest in relation to noise, vibration and strength of structures and it includes both internal material damping and the additional damping caused by the whole mechanical structure. High damping epoxies are visco-elastic vibration damping materials that were developed by VTT Technical Research Centre of Finland in cooperation with Noisetek. The most efficient way to prevent the harmful effects of vibration is to increase damping using constrained-layer systems that provide weight-efficient, high-level damping even for heavy machinery structures. Utilization of this adjustable epoxy based vibration damping material is based on accurate control of location of its glass transition temperature (Tg) region. In the middle of Tg the maximum mechanical damping is achieved the measured loss factor values for developed epoxies varies from 1.3 to 1.7. In practice, the properties of a given cured epoxy system are designed so that the maximum peak of damping is set to appear in the property window of predetermined thermal and mechanical vibration conditions. Temperature and frequency dependent material properties of high damping epoxies were measured (DMTA). Based on these measurements visco-elastic model for describing frequency temperature dependent properties is developed. Accurate material model enables to use of FE modeling tools to simulate efficiency of different damping treatments on vibration behaviour of real structures.",
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Lamula, L, Parviainen, H, Saarinen, K & Lindroos, T 2011, Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications. in MJ Crocker, M Pawelczyk & N Ivanov (eds), Proceedings: 18th International Congress on Sound and Vibration 2011, ICSV 19. vol. 3, International Institute of Acoustics and Vibration IIAV, pp. 2198-2205, 18th International Congress on Sound & Vibration, ICSV18, Rio de Janeiro, Brazil, 10/07/11.

Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications. / Lamula, Lasse; Parviainen, Heikki; Saarinen, Kari; Lindroos, Tomi.

Proceedings: 18th International Congress on Sound and Vibration 2011, ICSV 19. ed. / Malcolm J. Crocker; Marek Pawelczyk; Nickolay Ivanov . Vol. 3 International Institute of Acoustics and Vibration IIAV, 2011. p. 2198-2205.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications

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AU - Parviainen, Heikki

AU - Saarinen, Kari

AU - Lindroos, Tomi

N1 - Project code: 71902

PY - 2011

Y1 - 2011

N2 - Mechanical vibration causes problems in many applications. Vibration damping of mechanical structures is of interest in relation to noise, vibration and strength of structures and it includes both internal material damping and the additional damping caused by the whole mechanical structure. High damping epoxies are visco-elastic vibration damping materials that were developed by VTT Technical Research Centre of Finland in cooperation with Noisetek. The most efficient way to prevent the harmful effects of vibration is to increase damping using constrained-layer systems that provide weight-efficient, high-level damping even for heavy machinery structures. Utilization of this adjustable epoxy based vibration damping material is based on accurate control of location of its glass transition temperature (Tg) region. In the middle of Tg the maximum mechanical damping is achieved the measured loss factor values for developed epoxies varies from 1.3 to 1.7. In practice, the properties of a given cured epoxy system are designed so that the maximum peak of damping is set to appear in the property window of predetermined thermal and mechanical vibration conditions. Temperature and frequency dependent material properties of high damping epoxies were measured (DMTA). Based on these measurements visco-elastic model for describing frequency temperature dependent properties is developed. Accurate material model enables to use of FE modeling tools to simulate efficiency of different damping treatments on vibration behaviour of real structures.

AB - Mechanical vibration causes problems in many applications. Vibration damping of mechanical structures is of interest in relation to noise, vibration and strength of structures and it includes both internal material damping and the additional damping caused by the whole mechanical structure. High damping epoxies are visco-elastic vibration damping materials that were developed by VTT Technical Research Centre of Finland in cooperation with Noisetek. The most efficient way to prevent the harmful effects of vibration is to increase damping using constrained-layer systems that provide weight-efficient, high-level damping even for heavy machinery structures. Utilization of this adjustable epoxy based vibration damping material is based on accurate control of location of its glass transition temperature (Tg) region. In the middle of Tg the maximum mechanical damping is achieved the measured loss factor values for developed epoxies varies from 1.3 to 1.7. In practice, the properties of a given cured epoxy system are designed so that the maximum peak of damping is set to appear in the property window of predetermined thermal and mechanical vibration conditions. Temperature and frequency dependent material properties of high damping epoxies were measured (DMTA). Based on these measurements visco-elastic model for describing frequency temperature dependent properties is developed. Accurate material model enables to use of FE modeling tools to simulate efficiency of different damping treatments on vibration behaviour of real structures.

KW - noise

KW - vibration

KW - damping

KW - constrained-layer

KW - epoxy

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M3 - Conference article in proceedings

SN - 978-1-61839-259-6

VL - 3

SP - 2198

EP - 2205

BT - Proceedings

A2 - Crocker, Malcolm J.

A2 - Pawelczyk, Marek

A2 - Ivanov , Nickolay

PB - International Institute of Acoustics and Vibration IIAV

ER -

Lamula L, Parviainen H, Saarinen K, Lindroos T. Determination and validation of viscoelastic material model for an epoxy compound in constrained layer damping applications. In Crocker MJ, Pawelczyk M, Ivanov N, editors, Proceedings: 18th International Congress on Sound and Vibration 2011, ICSV 19. Vol. 3. International Institute of Acoustics and Vibration IIAV. 2011. p. 2198-2205