Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports

Recently, probabilistic evaluation has been required in the seismic design. In this study, a design method of piping system supported by elasto-plastic damper based on dynamic reliability of pipings was proposed. First, an analytical model of an L-type cantilevered piping system with weight at the t...

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Autores principales:	Atsuhiko SHINTANI, Keishi TSUJITA, Tomohiro ITO, Chihiro NAKAGAWA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	dynamic reliability piping systems elasto-plastic damper absorbed energy white gaussian noise optimization Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/7a2678458d65462d9ef4eeecef2574f6
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spelling	oai:doaj.org-article:7a2678458d65462d9ef4eeecef2574f62021-11-26T07:03:57ZBasic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports2187-974510.1299/mej.16-00722https://doaj.org/article/7a2678458d65462d9ef4eeecef2574f62017-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/3/4_16-00722/_pdf/-char/enhttps://doaj.org/toc/2187-9745Recently, probabilistic evaluation has been required in the seismic design. In this study, a design method of piping system supported by elasto-plastic damper based on dynamic reliability of pipings was proposed. First, an analytical model of an L-type cantilevered piping system with weight at the top end subjected to seismic input was derived, considering the nonlinear characteristics of the elasto-plastic dampers. Installation of a lead extrusion damper (LED) was assumed as the elasto-plastic damper. The force-displacement relationship of the LED was given by a bilinear hysteretic curve. Seismic input was modeled as white Gaussian noise. The vibration behaviors were calculated for various seismic inputs, and the stress and the energy absorption were calculated. On the basis of the results, the evaluation indices, such as the dynamic reliability, the energy absorption ratio, and the balance of energy absorption, were calculated. Finally, optimization of the support locations was investigated on the basis of the view point of the dynamic reliability. In addition, the effects of the capacities of the two supports on the evaluation index are also investigated. As a result, Jpiping was highest when Node 10 was supported at B. Jenergy was higher when Supports A and B were close to the weight but a little apart from each other. Jbalance was lower when Supports A and B were close to each other. Furthermore, it was obtained that the effect of Support B capacity on the response behavior of pipings is larger than that of Support A capacity.Atsuhiko SHINTANIKeishi TSUJITATomohiro ITOChihiro NAKAGAWAThe Japan Society of Mechanical Engineersarticledynamic reliabilitypiping systemselasto-plastic damperabsorbed energywhite gaussian noiseoptimizationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 3, Pp 16-00722-16-00722 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	dynamic reliability piping systems elasto-plastic damper absorbed energy white gaussian noise optimization Mechanical engineering and machinery TJ1-1570
spellingShingle	dynamic reliability piping systems elasto-plastic damper absorbed energy white gaussian noise optimization Mechanical engineering and machinery TJ1-1570 Atsuhiko SHINTANI Keishi TSUJITA Tomohiro ITO Chihiro NAKAGAWA Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
description	Recently, probabilistic evaluation has been required in the seismic design. In this study, a design method of piping system supported by elasto-plastic damper based on dynamic reliability of pipings was proposed. First, an analytical model of an L-type cantilevered piping system with weight at the top end subjected to seismic input was derived, considering the nonlinear characteristics of the elasto-plastic dampers. Installation of a lead extrusion damper (LED) was assumed as the elasto-plastic damper. The force-displacement relationship of the LED was given by a bilinear hysteretic curve. Seismic input was modeled as white Gaussian noise. The vibration behaviors were calculated for various seismic inputs, and the stress and the energy absorption were calculated. On the basis of the results, the evaluation indices, such as the dynamic reliability, the energy absorption ratio, and the balance of energy absorption, were calculated. Finally, optimization of the support locations was investigated on the basis of the view point of the dynamic reliability. In addition, the effects of the capacities of the two supports on the evaluation index are also investigated. As a result, Jpiping was highest when Node 10 was supported at B. Jenergy was higher when Supports A and B were close to the weight but a little apart from each other. Jbalance was lower when Supports A and B were close to each other. Furthermore, it was obtained that the effect of Support B capacity on the response behavior of pipings is larger than that of Support A capacity.
format	article
author	Atsuhiko SHINTANI Keishi TSUJITA Tomohiro ITO Chihiro NAKAGAWA
author_facet	Atsuhiko SHINTANI Keishi TSUJITA Tomohiro ITO Chihiro NAKAGAWA
author_sort	Atsuhiko SHINTANI
title	Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
title_short	Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
title_full	Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
title_fullStr	Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
title_full_unstemmed	Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
title_sort	basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/7a2678458d65462d9ef4eeecef2574f6
work_keys_str_mv	AT atsuhikoshintani basicstudyondynamicreliabilityofmachineryandpipingsystemsupportedbyelastoplasticsupports AT keishitsujita basicstudyondynamicreliabilityofmachineryandpipingsystemsupportedbyelastoplasticsupports AT tomohiroito basicstudyondynamicreliabilityofmachineryandpipingsystemsupportedbyelastoplasticsupports AT chihironakagawa basicstudyondynamicreliabilityofmachineryandpipingsystemsupportedbyelastoplasticsupports
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Basic study on dynamic reliability of machinery and piping system supported by elasto-plastic supports

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