Combination Analysis of Operational TPA and CAE Technique for Obtaining High Contributing Vibration Mode

Paper #:
  • 2017-01-1856

Published:
  • 2017-06-05
Citation:
Yoshida, J., Tanaka, K., Nakamoto, R., and Fukasawa, K., "Combination Analysis of Operational TPA and CAE Technique for Obtaining High Contributing Vibration Mode," SAE Technical Paper 2017-01-1856, 2017.
Pages:
10
Abstract:
In this study, we combined operational transfer path analysis (OTPA) method with CAE technique to obtain high contributing vibration modes. A rear frame model of a small construction machine was employed for the analysis. 20 vibration modes were obtained by CAE (eigenmode analysis) under 200 Hz. Subsequently, operational test, in which a sinusoidal input force was given, was carried out. For applying OTPA, acceleration signals at 15 points on the rear frame were used as the reference signals and the cab vibration positioned on the frame via rubber bushes was used as the response signal. These acceleration signals were then measured simultaneously in the operational condition. As the result of OTPA, high contributing principal component modes were calculated and high contributing vibration modes were also extracted using mode shape correlation between them. Two in the 20 calculated vibration modes remained as the important modes to the cab vibration through the analyses. Finally, CAE (response analysis) was applied for estimating the influence of a modification to reduce the high contributing mode amplitude at 150 Hz and the actual countermeasure was performed according to the simulation result. The result showed that the cab vibration could be reduced at the frequency largely and effectiveness of this combination analyses was verified.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2016-04-30
Technical Paper / Journal Article
2010-04-12
Training / Education
2015-07-13
Training / Education
2017-01-20
Technical Paper / Journal Article
2010-04-12
Training / Education
2016-03-07
Technical Paper / Journal Article
2010-04-12