Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox

As the demand for agricultural electric vehicles increases, it is becoming important to conduct noise reduction in consideration of the characteristics of an electric powertrain. This study was conducted to optimize the shape design of gearbox housing for radiated noise reduction of an agricultural...

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Main Authors: Gwan-Hee Son, Beom-Soo Kim, Seung-Je Cho, Young-Jun Park
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/23/8414
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author Gwan-Hee Son
Beom-Soo Kim
Seung-Je Cho
Young-Jun Park
author_facet Gwan-Hee Son
Beom-Soo Kim
Seung-Je Cho
Young-Jun Park
author_sort Gwan-Hee Son
collection DOAJ
description As the demand for agricultural electric vehicles increases, it is becoming important to conduct noise reduction in consideration of the characteristics of an electric powertrain. This study was conducted to optimize the shape design of gearbox housing for radiated noise reduction of an agricultural electric vehicle gearbox. The noise and vibration of the gearbox were measured considering the noise characteristics of the electric vehicle gearbox, which radiates high-frequency pure tone noise. The main noise source radiated by the structural vibration of the gearbox housing was identified and considered when modeling the loading conditions in the numerical analysis. To improve the reliability, the finite element (FE) model was updated and validated. Internal machine elements were modeled as a substructure through a reduced-order modeling method to reduce the computing time and apply a constant gear excitation force. The weak areas of structure were determined and it was used as the design area for optimization. The topology optimization technique was used to reduce the equivalent radiated power (ERP) which was used as an indicator of radiated noise level. The maximum value of the ERP decreased under all operating conditions at the rated speed.
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spelling doaj.art-05f5278d1f1d4846a26015fd91da0c4a2023-11-20T22:24:14ZengMDPI AGApplied Sciences2076-34172020-11-011023841410.3390/app10238414Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle GearboxGwan-Hee Son0Beom-Soo Kim1Seung-Je Cho2Young-Jun Park3Department of Biosystems Engineering, College of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, KoreaDepartment of Biosystems Engineering, College of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, KoreaSmart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology, 119 Jipyeongseon sandan 3-gil, Baeksan-myeon, Gimje-si 54325, KoreaDepartment of Biosystems Engineering, College of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, KoreaAs the demand for agricultural electric vehicles increases, it is becoming important to conduct noise reduction in consideration of the characteristics of an electric powertrain. This study was conducted to optimize the shape design of gearbox housing for radiated noise reduction of an agricultural electric vehicle gearbox. The noise and vibration of the gearbox were measured considering the noise characteristics of the electric vehicle gearbox, which radiates high-frequency pure tone noise. The main noise source radiated by the structural vibration of the gearbox housing was identified and considered when modeling the loading conditions in the numerical analysis. To improve the reliability, the finite element (FE) model was updated and validated. Internal machine elements were modeled as a substructure through a reduced-order modeling method to reduce the computing time and apply a constant gear excitation force. The weak areas of structure were determined and it was used as the design area for optimization. The topology optimization technique was used to reduce the equivalent radiated power (ERP) which was used as an indicator of radiated noise level. The maximum value of the ERP decreased under all operating conditions at the rated speed.https://www.mdpi.com/2076-3417/10/23/8414agricultural electric vehiclegear whine noiseFE model updatetopology optimization
spellingShingle Gwan-Hee Son
Beom-Soo Kim
Seung-Je Cho
Young-Jun Park
Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
Applied Sciences
agricultural electric vehicle
gear whine noise
FE model update
topology optimization
title Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
title_full Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
title_fullStr Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
title_full_unstemmed Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
title_short Optimization of the Housing Shape Design for Radiated Noise Reduction of an Agricultural Electric Vehicle Gearbox
title_sort optimization of the housing shape design for radiated noise reduction of an agricultural electric vehicle gearbox
topic agricultural electric vehicle
gear whine noise
FE model update
topology optimization
url https://www.mdpi.com/2076-3417/10/23/8414
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