Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain

This paper analyzed the suppression method of the nonlinear vibration called subharmonic vibration of order 1/2 in the car powertrain by using a dynamic absorber. In the car powertrain, the torsional forced vibration caused by engine explosions leads to inhibition of the ride quality. Thus, in the t...

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Autores principales:	Sofian ROSBI, Takahiro RYU, Takashi NAKAE, Kenichiro MATSUZAKI, Atsuo SUEOKA, Yoshihiro TAKIKAWA, Yoichi OOI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	forced vibration vibration of rotating body nonlinear vibration dynamic absorber powertrain piecewise-linear spring subharmonic vibration of order 1/2 Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/641e49e08f0f4a75ab4939db3953e5fa
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spelling	oai:doaj.org-article:641e49e08f0f4a75ab4939db3953e5fa2021-11-26T06:25:42ZEvaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain2187-974510.1299/mej.14-00528https://doaj.org/article/641e49e08f0f4a75ab4939db3953e5fa2015-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/3/2_14-00528/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper analyzed the suppression method of the nonlinear vibration called subharmonic vibration of order 1/2 in the car powertrain by using a dynamic absorber. In the car powertrain, the torsional forced vibration caused by engine explosions leads to inhibition of the ride quality. Thus, in the torque converter of an automatic transmission car, a piecewise-linear spring called damper is used to reduce the transmission of the forced vibration. However, the subharmonic vibration occurred in the actual vehicle, when the spring restoring characteristics is around the switching point. The fundamental vibration frequency of the subharmonic vibration is half to the engine forced vibration frequency. Although the design of the dynamic absorber to suppress the forced vibration has been established for the linear systems, the optimum design to suppress the subharmonic vibration of order 1/2 has not yet been investigated. The powertrain is modeled by multi degree-of-freedom system as an actual vehicle, including engine, torque converter, transmission gears and wheels. Equation of motion is developed with also considering spring restoring force of piecewise-linear spring. The numerical result shows subharmonic vibration occurs when the engine excitation frequency is almost twice of the second mode of natural frequency, and the result shows a good agreement with the experimental data. Then, the dynamic absorber is introduced to suppress the occurrence of subharmonic vibration theoretically. In this paper, the optimum design of the dynamic absorber to suppress the subharmonic vibration is discussed. The numerical result shows the optimally designed dynamic absorber in the natural frequency and the damping ratio is capable of suppressing the occurrence of the subharmonic vibration.Sofian ROSBITakahiro RYUTakashi NAKAEKenichiro MATSUZAKIAtsuo SUEOKAYoshihiro TAKIKAWAYoichi OOIThe Japan Society of Mechanical Engineersarticleforced vibrationvibration of rotating bodynonlinear vibrationdynamic absorberpowertrainpiecewise-linear springsubharmonic vibration of order 1/2Mechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 3, Pp 14-00528-14-00528 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	forced vibration vibration of rotating body nonlinear vibration dynamic absorber powertrain piecewise-linear spring subharmonic vibration of order 1/2 Mechanical engineering and machinery TJ1-1570
spellingShingle	forced vibration vibration of rotating body nonlinear vibration dynamic absorber powertrain piecewise-linear spring subharmonic vibration of order 1/2 Mechanical engineering and machinery TJ1-1570 Sofian ROSBI Takahiro RYU Takashi NAKAE Kenichiro MATSUZAKI Atsuo SUEOKA Yoshihiro TAKIKAWA Yoichi OOI Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
description	This paper analyzed the suppression method of the nonlinear vibration called subharmonic vibration of order 1/2 in the car powertrain by using a dynamic absorber. In the car powertrain, the torsional forced vibration caused by engine explosions leads to inhibition of the ride quality. Thus, in the torque converter of an automatic transmission car, a piecewise-linear spring called damper is used to reduce the transmission of the forced vibration. However, the subharmonic vibration occurred in the actual vehicle, when the spring restoring characteristics is around the switching point. The fundamental vibration frequency of the subharmonic vibration is half to the engine forced vibration frequency. Although the design of the dynamic absorber to suppress the forced vibration has been established for the linear systems, the optimum design to suppress the subharmonic vibration of order 1/2 has not yet been investigated. The powertrain is modeled by multi degree-of-freedom system as an actual vehicle, including engine, torque converter, transmission gears and wheels. Equation of motion is developed with also considering spring restoring force of piecewise-linear spring. The numerical result shows subharmonic vibration occurs when the engine excitation frequency is almost twice of the second mode of natural frequency, and the result shows a good agreement with the experimental data. Then, the dynamic absorber is introduced to suppress the occurrence of subharmonic vibration theoretically. In this paper, the optimum design of the dynamic absorber to suppress the subharmonic vibration is discussed. The numerical result shows the optimally designed dynamic absorber in the natural frequency and the damping ratio is capable of suppressing the occurrence of the subharmonic vibration.
format	article
author	Sofian ROSBI Takahiro RYU Takashi NAKAE Kenichiro MATSUZAKI Atsuo SUEOKA Yoshihiro TAKIKAWA Yoichi OOI
author_facet	Sofian ROSBI Takahiro RYU Takashi NAKAE Kenichiro MATSUZAKI Atsuo SUEOKA Yoshihiro TAKIKAWA Yoichi OOI
author_sort	Sofian ROSBI
title	Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
title_short	Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
title_full	Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
title_fullStr	Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
title_full_unstemmed	Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
title_sort	evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/641e49e08f0f4a75ab4939db3953e5fa
work_keys_str_mv	AT sofianrosbi evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT takahiroryu evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT takashinakae evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT kenichiromatsuzaki evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT atsuosueoka evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT yoshihirotakikawa evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain AT yoichiooi evaluationofdynamicabsorbertosuppresssubharmonicnonlinearvibrationincarpowertrain
_version_	1718409780708507648

Evaluation of dynamic absorber to suppress subharmonic nonlinear vibration in car powertrain

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