Traction prediction equations for riceland type tyre
A study was conducted to determine the accuracy of Wismer-Luth’s and Brixius’ equations in predicting motion resistance ratio, net traction ratio and tractive efficiency of a riceland type tyre. The tyre was tested on a sandy clay loam soil in an indoor UPM tyre traction testing facility. The experi...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
Universiti Putra Malaysia
1999
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| Online Access: | http://psasir.upm.edu.my/id/eprint/33850/ http://psasir.upm.edu.my/id/eprint/33850/1/33850.pdf |
| _version_ | 1848847612443099136 |
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| author | Khidir, Elwaleed Awad Yahya, Azmi |
| author_facet | Khidir, Elwaleed Awad Yahya, Azmi |
| author_sort | Khidir, Elwaleed Awad |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A study was conducted to determine the accuracy of Wismer-Luth’s and Brixius’ equations in predicting motion resistance ratio, net traction ratio and tractive efficiency of a riceland type tyre. The tyre was tested on a sandy clay loam soil in an indoor UPM tyre traction testing facility. The experiment was conducted by running the tyre in two operation modes; towing mode for formulation of tyre motion resistance ratio equation and driving mode for the formulation of the tyre net traction ratio and tractive efficiency equations. A total of ninety test runs were involved in the tyre motion resistance ratio determinations at three selected inflation pressures (i.e 221, 193 and 166 kPa) and selected wheel numerics ranging between 0 to 70. For the tyre net traction and tractive efficiency determinations, 126 test runs were conducted in a combination consisting of three selected inflation pressures namely (i.e 221, 193 and 166 kPa) and two wheel numerics (i.e 19 and 29) representing two extreme types of soil strength under different levels of travel reduction ranging between 0 to 40%. New equations were formulated using regression analysis to describe the tyre motion resistance ratio, torque ratio and net traction ratio. Analysis of covariance (ANCOVA) showed that the effect of tyre inflation pressure was highly significant at 0.01 probability level for both the tyre motion resistance ratio and tyre net traction ratio. The advantage of lower tyre inflation pressure was pronounced when decreasing the tyre nominal inflation pressure (i.e 221 kPa) to 193 kPa. However, the traction performance of the tyre was worst at inflation pressure of 166 kPa. |
| first_indexed | 2025-11-15T09:21:22Z |
| format | Conference or Workshop Item |
| id | upm-33850 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:21:22Z |
| publishDate | 1999 |
| publisher | Universiti Putra Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-338502017-11-02T02:42:45Z http://psasir.upm.edu.my/id/eprint/33850/ Traction prediction equations for riceland type tyre Khidir, Elwaleed Awad Yahya, Azmi A study was conducted to determine the accuracy of Wismer-Luth’s and Brixius’ equations in predicting motion resistance ratio, net traction ratio and tractive efficiency of a riceland type tyre. The tyre was tested on a sandy clay loam soil in an indoor UPM tyre traction testing facility. The experiment was conducted by running the tyre in two operation modes; towing mode for formulation of tyre motion resistance ratio equation and driving mode for the formulation of the tyre net traction ratio and tractive efficiency equations. A total of ninety test runs were involved in the tyre motion resistance ratio determinations at three selected inflation pressures (i.e 221, 193 and 166 kPa) and selected wheel numerics ranging between 0 to 70. For the tyre net traction and tractive efficiency determinations, 126 test runs were conducted in a combination consisting of three selected inflation pressures namely (i.e 221, 193 and 166 kPa) and two wheel numerics (i.e 19 and 29) representing two extreme types of soil strength under different levels of travel reduction ranging between 0 to 40%. New equations were formulated using regression analysis to describe the tyre motion resistance ratio, torque ratio and net traction ratio. Analysis of covariance (ANCOVA) showed that the effect of tyre inflation pressure was highly significant at 0.01 probability level for both the tyre motion resistance ratio and tyre net traction ratio. The advantage of lower tyre inflation pressure was pronounced when decreasing the tyre nominal inflation pressure (i.e 221 kPa) to 193 kPa. However, the traction performance of the tyre was worst at inflation pressure of 166 kPa. Universiti Putra Malaysia 1999 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/33850/1/33850.pdf Khidir, Elwaleed Awad and Yahya, Azmi (1999) Traction prediction equations for riceland type tyre. In: National Conference on Engineering Smart Farming for the Next Millenium, 14-16 Mar. 1999, UPM, Serdang, Selangor. (pp. 1-17). |
| spellingShingle | Khidir, Elwaleed Awad Yahya, Azmi Traction prediction equations for riceland type tyre |
| title | Traction prediction equations for riceland type tyre |
| title_full | Traction prediction equations for riceland type tyre |
| title_fullStr | Traction prediction equations for riceland type tyre |
| title_full_unstemmed | Traction prediction equations for riceland type tyre |
| title_short | Traction prediction equations for riceland type tyre |
| title_sort | traction prediction equations for riceland type tyre |
| url | http://psasir.upm.edu.my/id/eprint/33850/ http://psasir.upm.edu.my/id/eprint/33850/1/33850.pdf |