This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Root Cause Analysis of Drive Noise in an Agriculture Machine End Unit
Technical Paper
2023-01-5013
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
In any off-highway machinery throughout the product development cycle, noise is
considered an important characteristic. This characteristic drives the product
quality, safety, and productivity and meets the homologation requirements.
Identifying the critical noise source and finding out the true root cause of the
noise source is a very critical element in improving the design to reduce the
noise levels. A systematic approach is needed to understand the behavior of the
system, which can be achieved through collaborative efforts among the analysis,
design, and testing teams.
This paper describes how virtual analysis helps to determine the main source of
noise radiation in the audible frequency range of the human ear. The sound
pressure level (SPL) in the test data at the end unit drive of an agriculture
machine showed high peaks at a few frequencies in the critical frequency range.
The spectral content remains the same regardless of the backshaft speed. The
noise goes away when the tensioner sprocket center nut is loosened. In the
initial stage, the accuracy of the end unit drive finite element (FE) model is
ensured by comparing the virtual driving point impedances with test data for
both loose and tight nut conditions. In the later stage, the acoustic finite
element method adaptive order (FEM AO) model is developed [1] and correlated with test data of SPLs. In the final
stage, panel contribution analysis is carried out to determine the critical
noise-radiating component. This validated model will be confidently used to
improve the design further.
Authors
Topic
Citation
Chaudhari, D., Dasabai, B., Bogue, B., and Faulkner, S., "Root Cause Analysis of Drive Noise in an Agriculture Machine End Unit," SAE Technical Paper 2023-01-5013, 2023, https://doi.org/10.4271/2023-01-5013.Also In
References
- Dasabai , B. and Bogue , B. Noise Prediction Method Development for Crop Feed Mechanism SAE Technical Paper 2021-01-1072 2021 https://doi.org/10.4271/2021-01-1072
- Duncan , A. , Geotchius , G. , and Guan , J. SAE 2013 NVH Conference Structure-Borne NVH Workshop 2013 SAE Noise and Vibration Conference and Exhibition 2013
- Rao , S.S. Mechanical Vibrations 5th Upper Saddle River, NJ Prentice Hall 2011
- Mandke , D. , Ghaisas , D. , Pawar , S. , and Suh , S. Numerical Prediction and Verification of Noise Radiation Characteristics of Diesel Engine Block SAE Technical Paper 2019-01-1591 2019 https://doi.org/10.4271/2019-01-1591
- Kumaraswamy , S. Measurement and Analysis of Cam Chain Noise for Source Identification and Mitigation SAE Technical Paper 2009-01-2167 2009 https://doi.org/10.4271/2009-01-2167
- He , J. and Fu , Z.-F. Modal Analysis 1st Oxford Butterworth-Heinemann 2001