Dynamic analysis, updating and modification of truck chassis
Reducing the weight and production cost of chassis is considered to be one of the most important area of research in automotive manufacturing industry. However with lighter vehicle, the chassis is easily subjected to large vibration mainly coming from the engine and road irregularities. This paper l...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/4129/ http://eprints.uthm.edu.my/4129/1/N38.pdf |
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| Summary: | Reducing the weight and production cost of chassis is considered to be one of the
most important area of research in automotive manufacturing industry. However
with lighter vehicle, the chassis is easily subjected to large vibration mainly
coming from the engine and road irregularities. This paper looks into the
application of dynamic analysis for verification of the complex FE model of truck
chassis. The dynamic characteristic of truck chassis such as the natural frequency
and mode shape is determined by finite element method. Experimental
measurement by modal testing is then carried out to determine the accuracy of
finite element analysis. Initial result indicated some discrepancies with regard to
natural frequencies at various modes. However for mode shape analysis, both
methods produced almost the same shape. As for getting a better agreement
between both methods of analysis, modal updating had been carried out by
adjusting parametric value of Modulus Young and mass density. It had been
pointed out that the error was reduced to ± 2% through the model updating
verified FE model has been obtained. Finally, the modifications of the verified FE
truck chassis model has been suggested by consider adding the stiffener to reduce
the vibration through chassis as well as improve the strength of structure. |
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