FEA analysis of tractor axle modification

Sambamo, Richard (2014) FEA analysis of tractor axle modification. [USQ Project]

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Abstract

Agricultural tractor is one of the major and important agriculture implements and the modern heavy agricultural tractors have sophisticated front axles and suspensions. They are also now capable of travelling at speeds of more than 40 km/h. These agricultural tractors are playing an even more important role in the modern Controlled Traffic Farming (CTF) which is being embraced by many Australian farmers. Implementation of CTF however needs the tractors’ front axle to be modified to suit its different and unique farming configuration. The large United States based tractor manufacturers have not been able to satisfy this emerging unique market most likely because of its size and local Australian engineering firms have come up with different front axle modifications custom made to fit particular tractors currently on the market.

The purpose of this research project was to determine the safe loading levels for a modified tractor front axle. The modified tractor axle was for John Deere 8530. Creo 2.0 Parametric and Simulate a modern Finite Element Analysis package was used to complete some robust analysis of the existing product under a wider range of load conditions than are feasible through normal field testing. Manufacturer's CAD data was imported into Creo 2.0
Parametric which was then used to create the 3D model of components and axle. Using the loads calculated from the working weight of the JD8530 and the dynamic loads outlined in Vehicle Standards Bulletin 14 (VSB14), the model was committed to Creo 2.0 Simulate for analysis.

Results of the analysis were processed using the same platform and they indicated a potential problem with component 12 which consistently showed stresses above 300 MPa. These results though were based on worst cases of loadings which are unlikely to occur on the field. It was therefore concluded that the modified axle is safe from stress induced failure if the loadings levels are kept within the capacity of JD8530 tractor.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Mechanical) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Supervisors: Snook, Chris
Date Deposited: 09 Sep 2015 05:12
Last Modified: 09 Mar 2016 02:27
Uncontrolled Keywords: FEA software; axle; tractor axle; agriculture controlled traffic farming
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091302 Automation and Control Engineering
URI: http://eprints.usq.edu.au/id/eprint/27304

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