An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method

Resonant response of turbomachinery blades can lead to high cycle fatigue (HCF) if the vibration amplitudes are significant. Therefore, the dangerousness assessment of the resonance crossing is important. It requires accurate predictions of the aerodynamic excitation, damping, and response, which wi...

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Autores principales:	Xiaojie Zhang, Yanrong Wang, Xianghua Jiang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	resonant response time transformation method harmonic forced response method CFD simulations wake excitation Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/4c46b0ba373340e5b7fe29d5fd700882
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spelling	oai:doaj.org-article:4c46b0ba373340e5b7fe29d5fd7008822021-11-25T15:57:04ZAn Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method10.3390/aerospace81103122226-4310https://doaj.org/article/4c46b0ba373340e5b7fe29d5fd7008822021-10-01T00:00:00Zhttps://www.mdpi.com/2226-4310/8/11/312https://doaj.org/toc/2226-4310Resonant response of turbomachinery blades can lead to high cycle fatigue (HCF) if the vibration amplitudes are significant. Therefore, the dangerousness assessment of the resonance crossing is important. It requires accurate predictions of the aerodynamic excitation, damping, and response, which will consume immense computational costs. The novel aspect of this study is the development of an efficient approach, which incorporates the time transformation (TT) method to predict the aerodynamic excitations and the harmonic forced response method to obtain the response levels. The efficiency and accuracy of this method were evaluated by comparing with traditional methods for the resonance crossing excited by upstream wake in a 1.5 multistage compressor. For the aerodynamic excitation, discrepancies of ±2% at the mean pressure and ±25% at the harmonic pressure in most areas expect for the blade root were observed, but the calculation time required by the TT method was only 5% of that by the time-marching method. Moreover, response levels with the same aerodynamic forces were compared between the harmonic forced-response and transient dynamic methods. Small differences in the displacement and stress variables were observed; the relative deviation was smaller than 2% with only 1% computing time compared with the transient method, indicating the high accuracy and efficiency of the efficient approach.Xiaojie ZhangYanrong WangXianghua JiangMDPI AGarticleresonant responsetime transformation methodharmonic forced response methodCFD simulationswake excitationMotor vehicles. Aeronautics. AstronauticsTL1-4050ENAerospace, Vol 8, Iss 312, p 312 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	resonant response time transformation method harmonic forced response method CFD simulations wake excitation Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	resonant response time transformation method harmonic forced response method CFD simulations wake excitation Motor vehicles. Aeronautics. Astronautics TL1-4050 Xiaojie Zhang Yanrong Wang Xianghua Jiang An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
description	Resonant response of turbomachinery blades can lead to high cycle fatigue (HCF) if the vibration amplitudes are significant. Therefore, the dangerousness assessment of the resonance crossing is important. It requires accurate predictions of the aerodynamic excitation, damping, and response, which will consume immense computational costs. The novel aspect of this study is the development of an efficient approach, which incorporates the time transformation (TT) method to predict the aerodynamic excitations and the harmonic forced response method to obtain the response levels. The efficiency and accuracy of this method were evaluated by comparing with traditional methods for the resonance crossing excited by upstream wake in a 1.5 multistage compressor. For the aerodynamic excitation, discrepancies of ±2% at the mean pressure and ±25% at the harmonic pressure in most areas expect for the blade root were observed, but the calculation time required by the TT method was only 5% of that by the time-marching method. Moreover, response levels with the same aerodynamic forces were compared between the harmonic forced-response and transient dynamic methods. Small differences in the displacement and stress variables were observed; the relative deviation was smaller than 2% with only 1% computing time compared with the transient method, indicating the high accuracy and efficiency of the efficient approach.
format	article
author	Xiaojie Zhang Yanrong Wang Xianghua Jiang
author_facet	Xiaojie Zhang Yanrong Wang Xianghua Jiang
author_sort	Xiaojie Zhang
title	An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
title_short	An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
title_full	An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
title_fullStr	An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
title_full_unstemmed	An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method
title_sort	efficient approach for predicting resonant response with the utilization of the time transformation method and the harmonic forced response method
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4c46b0ba373340e5b7fe29d5fd700882
work_keys_str_mv	AT xiaojiezhang anefficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod AT yanrongwang anefficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod AT xianghuajiang anefficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod AT xiaojiezhang efficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod AT yanrongwang efficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod AT xianghuajiang efficientapproachforpredictingresonantresponsewiththeutilizationofthetimetransformationmethodandtheharmonicforcedresponsemethod
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An Efficient Approach for Predicting Resonant Response with the Utilization of the Time Transformation Method and the Harmonic Forced Response Method

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