Evaluation of the effectiveness of elastomeric mount using vibration power flow and transmissibility methods

M. N. Arib Rejab, S. A. Abdul Shukor, M. R. Mohd Sofian, Jawaid Iqbal Inayat Hussain, A. Nazirah, I. Asyraf

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

This paper presents the results of an experimental work to determine the dynamic stiffness and loss factor of elastomeric mounts. It also presents the results of theoretical analysis to determine the transmissibility and vibration power flow of these mounts, which are associated with their contribution to structure-borne noise. Four types of elastomeric mounts were considered, where three of them were made from green natural rubber material (SMR CV60, Ekoprena and Pureprena) and one made from petroleum based synthetic rubber (EPDM). In order to determine the dynamic stiffness and loss factor of these elastomeric mounts, dynamic tests were conducted using MTS 830 Elastomer Test System. Dynamic stiffness and loss factor of these mounts were measured for a range of frequency between 5 Hz and 150 Hz, and with a dynamic amplitude of 0.2 mm (p-p). The transmissibility and vibration power flow were determined based on a simple 2-Degree-of-Freedom model representing a vibration isolation system with a flexible receiver. This model reprsents the three main parts of a vehicle, which are the powertrain and engine mounting, the flexible structure and the floor of the vehicle. The results revealed that synthetic rubber (EPDM) was only effective at high frequency region. Natural rubber (Ekoprena), on the other hand, was found to be effective at both low and high frequency regions due to its low transmissibility at resonant frequency and its ability to damp the resonance. The estimated structure-borne noise emission showed that Ekoprena has a lower contribution to structure-borne noise as compared to the other types of elastomeric mounts.

Original languageEnglish
Article number012034
JournalJournal of Physics: Conference Series
Volume908
Issue number1
DOIs
Publication statusPublished - 29 Oct 2017
EventInternational Conference on Applications and Design in Mechanical Engineering 2017, ICADME 2017 - Penang, Malaysia
Duration: 21 Aug 201722 Aug 2017

Fingerprint

vibration
evaluation
synthetic rubbers
stiffness
rubber
vehicles
dynamic tests
elastomers
mounting
crude oil
engines
resonant frequencies
isolation
receivers
degrees of freedom
low frequencies

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Arib Rejab, M. N. ; Abdul Shukor, S. A. ; Mohd Sofian, M. R. ; Inayat Hussain, Jawaid Iqbal ; Nazirah, A. ; Asyraf, I. / Evaluation of the effectiveness of elastomeric mount using vibration power flow and transmissibility methods. In: Journal of Physics: Conference Series. 2017 ; Vol. 908, No. 1.
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Evaluation of the effectiveness of elastomeric mount using vibration power flow and transmissibility methods. / Arib Rejab, M. N.; Abdul Shukor, S. A.; Mohd Sofian, M. R.; Inayat Hussain, Jawaid Iqbal; Nazirah, A.; Asyraf, I.

In: Journal of Physics: Conference Series, Vol. 908, No. 1, 012034, 29.10.2017.

Research output: Contribution to journalConference article

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AU - Abdul Shukor, S. A.

AU - Mohd Sofian, M. R.

AU - Inayat Hussain, Jawaid Iqbal

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AU - Asyraf, I.

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N2 - This paper presents the results of an experimental work to determine the dynamic stiffness and loss factor of elastomeric mounts. It also presents the results of theoretical analysis to determine the transmissibility and vibration power flow of these mounts, which are associated with their contribution to structure-borne noise. Four types of elastomeric mounts were considered, where three of them were made from green natural rubber material (SMR CV60, Ekoprena and Pureprena) and one made from petroleum based synthetic rubber (EPDM). In order to determine the dynamic stiffness and loss factor of these elastomeric mounts, dynamic tests were conducted using MTS 830 Elastomer Test System. Dynamic stiffness and loss factor of these mounts were measured for a range of frequency between 5 Hz and 150 Hz, and with a dynamic amplitude of 0.2 mm (p-p). The transmissibility and vibration power flow were determined based on a simple 2-Degree-of-Freedom model representing a vibration isolation system with a flexible receiver. This model reprsents the three main parts of a vehicle, which are the powertrain and engine mounting, the flexible structure and the floor of the vehicle. The results revealed that synthetic rubber (EPDM) was only effective at high frequency region. Natural rubber (Ekoprena), on the other hand, was found to be effective at both low and high frequency regions due to its low transmissibility at resonant frequency and its ability to damp the resonance. The estimated structure-borne noise emission showed that Ekoprena has a lower contribution to structure-borne noise as compared to the other types of elastomeric mounts.

AB - This paper presents the results of an experimental work to determine the dynamic stiffness and loss factor of elastomeric mounts. It also presents the results of theoretical analysis to determine the transmissibility and vibration power flow of these mounts, which are associated with their contribution to structure-borne noise. Four types of elastomeric mounts were considered, where three of them were made from green natural rubber material (SMR CV60, Ekoprena and Pureprena) and one made from petroleum based synthetic rubber (EPDM). In order to determine the dynamic stiffness and loss factor of these elastomeric mounts, dynamic tests were conducted using MTS 830 Elastomer Test System. Dynamic stiffness and loss factor of these mounts were measured for a range of frequency between 5 Hz and 150 Hz, and with a dynamic amplitude of 0.2 mm (p-p). The transmissibility and vibration power flow were determined based on a simple 2-Degree-of-Freedom model representing a vibration isolation system with a flexible receiver. This model reprsents the three main parts of a vehicle, which are the powertrain and engine mounting, the flexible structure and the floor of the vehicle. The results revealed that synthetic rubber (EPDM) was only effective at high frequency region. Natural rubber (Ekoprena), on the other hand, was found to be effective at both low and high frequency regions due to its low transmissibility at resonant frequency and its ability to damp the resonance. The estimated structure-borne noise emission showed that Ekoprena has a lower contribution to structure-borne noise as compared to the other types of elastomeric mounts.

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