Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support

Determination and prediction of the dynamic properties of an O-ring for bearing support were performed. Utilizing O-rings as supporters of bearing is a promising way to suppress severe vibrations such as resonance and self-excited whirl experienced in high-speed turbo machinery. However, analytical...

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Autores principales:	Tadayoshi SHOYAMA, Koji FUJIMOTO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2018
Materias:	rubber o-ring viscoelasticity dynamic properties hyperelasticity fem analysis Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/6b8b1e197cd1445687a9c5829f677a69
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spelling	oai:doaj.org-article:6b8b1e197cd1445687a9c5829f677a692021-11-26T07:16:02ZCalculation of high-frequency dynamic properties of squeezed O-ring for bearing support2187-974510.1299/mej.17-00444https://doaj.org/article/6b8b1e197cd1445687a9c5829f677a692018-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/2/5_17-00444/_pdf/-char/enhttps://doaj.org/toc/2187-9745Determination and prediction of the dynamic properties of an O-ring for bearing support were performed. Utilizing O-rings as supporters of bearing is a promising way to suppress severe vibrations such as resonance and self-excited whirl experienced in high-speed turbo machinery. However, analytical prediction of the dynamic properties of O-rings has not been very successful so far because of its non-linear dependence on many parameters. In this study, focusing on the incompressibility of rubber materials, the isochoric shear viscoelasticity of an O-ring material was measured for high frequencies of up to 1 kHz. In measuring the viscoelasticity, a testing method developed by the authors was used. This method enables obtaining high-frequency shear viscoelasticity directly without assuming the temperature-frequency superposition principle. The obtained dynamic shear properties were modeled as functions of the frequency and hydrostatic pressure. Finite element models of squeezed O-rings were constructed with the material model assuming uniform property distribution, and dynamic analyses were conducted. The dynamic properties of O-rings were determined from the time-series data for the applied force and displacement. The data agreed with the experimental results of an actual O-ring. It was found that the dynamic properties of rubber components can be analytically predicted by considering the frequency and hydrostatic pressure dependence on the viscoelasticity.Tadayoshi SHOYAMAKoji FUJIMOTOThe Japan Society of Mechanical Engineersarticlerubbero-ringviscoelasticitydynamic propertieshyperelasticityfem analysisMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 2, Pp 17-00444-17-00444 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	rubber o-ring viscoelasticity dynamic properties hyperelasticity fem analysis Mechanical engineering and machinery TJ1-1570
spellingShingle	rubber o-ring viscoelasticity dynamic properties hyperelasticity fem analysis Mechanical engineering and machinery TJ1-1570 Tadayoshi SHOYAMA Koji FUJIMOTO Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
description	Determination and prediction of the dynamic properties of an O-ring for bearing support were performed. Utilizing O-rings as supporters of bearing is a promising way to suppress severe vibrations such as resonance and self-excited whirl experienced in high-speed turbo machinery. However, analytical prediction of the dynamic properties of O-rings has not been very successful so far because of its non-linear dependence on many parameters. In this study, focusing on the incompressibility of rubber materials, the isochoric shear viscoelasticity of an O-ring material was measured for high frequencies of up to 1 kHz. In measuring the viscoelasticity, a testing method developed by the authors was used. This method enables obtaining high-frequency shear viscoelasticity directly without assuming the temperature-frequency superposition principle. The obtained dynamic shear properties were modeled as functions of the frequency and hydrostatic pressure. Finite element models of squeezed O-rings were constructed with the material model assuming uniform property distribution, and dynamic analyses were conducted. The dynamic properties of O-rings were determined from the time-series data for the applied force and displacement. The data agreed with the experimental results of an actual O-ring. It was found that the dynamic properties of rubber components can be analytically predicted by considering the frequency and hydrostatic pressure dependence on the viscoelasticity.
format	article
author	Tadayoshi SHOYAMA Koji FUJIMOTO
author_facet	Tadayoshi SHOYAMA Koji FUJIMOTO
author_sort	Tadayoshi SHOYAMA
title	Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
title_short	Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
title_full	Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
title_fullStr	Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
title_full_unstemmed	Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support
title_sort	calculation of high-frequency dynamic properties of squeezed o-ring for bearing support
publisher	The Japan Society of Mechanical Engineers
publishDate	2018
url	https://doaj.org/article/6b8b1e197cd1445687a9c5829f677a69
work_keys_str_mv	AT tadayoshishoyama calculationofhighfrequencydynamicpropertiesofsqueezedoringforbearingsupport AT kojifujimoto calculationofhighfrequencydynamicpropertiesofsqueezedoringforbearingsupport
_version_	1718409722699186176

Calculation of high-frequency dynamic properties of squeezed O-ring for bearing support

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