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Suspension forces on a tri-axle air suspended semi-trailer
Dissertation (MEng)--University of Pretoria, 2009.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2013
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| _version_ | 1867613565369712640 |
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| access_status_str | Open Access |
| author2 | Els, P.S. (Pieter Schalk) |
| author_browse | Els, P.S. (Pieter Schalk) |
| author_facet | Els, P.S. (Pieter Schalk) |
| collection | Thesis |
| dc_rights_str_mv | © 2009 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2009. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/30959 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:09.710Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/30959 Suspension forces on a tri-axle air suspended semi-trailer Els, P.S. (Pieter Schalk) katc@tuks.co.za Kat, Cor-Jacques Rough road Validated air spring model Validated trailer model Force UCTD Dissertation (MEng)--University of Pretoria, 2009. The aim of this study is to investigate the use of multi-body vehicle simulation models to predict the suspension forces acting on the chassis of the vehicle, in order to perform durability analyses. Traditionally, durability of vehicles is evaluated with proving ground tests. This implies that a physical prototype of the vehicle is required before its durability can be evaluated. If we were able to evaluate the durability of the vehicle without any physical part or a full prototype of the vehicle available, great cost and time savings may be gained. These possible gains have lead to the use of computer aided engineering (CAE) tools. These tools have supplemented the proving ground durability test by using historical measured data and/or predicted data from vehicle simulation models, as input to the durability analyses i.e. Finite Element Analyses (FEA). The usefulness of the historical test data is limited and many of the vehicle simulation models that are used to predict the input data, have not been validated. In this study a validated mathematical model of a 40 ton flat bed tri-axle semi-trailer, able to predict the suspension forces, is created. The validation of the full vehicle model includes correlations for displacements, velocities, accelerations and forces of various vehicle parameters. A validated mathematical model of the air springs, that includes mass transfer and flow effects for use in full vehicle dynamic simulations, is also developed. The results obtained indicate that the air spring model, integrated into the full vehicle model, is able to give relative accurate predictions of displacements, velocities, accelerations and forces of various vehicle parameters, over a discrete road event and over a rough road. Mechanical and Aeronautical Engineering Unrestricted 2013-09-09T07:53:23Z 2009-06-29 2013-09-09T07:53:23Z 2009-04-28 2009-06-29 2009-06-24 Dissertation Kat, C-J 2009, Suspension forces on a tri-axle air suspended semi-trailer, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-06242009-153546/ > E1302/gm http://hdl.handle.net/2263/30959 http://upetd.up.ac.za/thesis/available/etd-06242009-153546/ en © 2009 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Rough road Validated air spring model Validated trailer model Force UCTD Suspension forces on a tri-axle air suspended semi-trailer |
| title | Suspension forces on a tri-axle air suspended semi-trailer |
| title_full | Suspension forces on a tri-axle air suspended semi-trailer |
| title_fullStr | Suspension forces on a tri-axle air suspended semi-trailer |
| title_full_unstemmed | Suspension forces on a tri-axle air suspended semi-trailer |
| title_short | Suspension forces on a tri-axle air suspended semi-trailer |
| title_sort | suspension forces on a tri axle air suspended semi trailer |
| topic | Rough road Validated air spring model Validated trailer model Force UCTD |
| url | http://hdl.handle.net/2263/30959 http://upetd.up.ac.za/thesis/available/etd-06242009-153546/ |