Predicting the Analysis of Fretting Damage for Addis Ababa Light Rail Train Wheel Set
| dc.contributor.advisor | Daniel, Tilahun (PhD) | |
| dc.contributor.author | Kidanemariam, Gebretsadik | |
| dc.date.accessioned | 2020-12-14T05:44:48Z | |
| dc.date.accessioned | 2023-11-04T15:17:12Z | |
| dc.date.available | 2020-12-14T05:44:48Z | |
| dc.date.available | 2023-11-04T15:17:12Z | |
| dc.date.issued | 2014-10 | |
| dc.description.abstract | Fretting in railway transportation results usually on the contact areas (fitting zones) of wheels and axles due to repeated relative oscillatory movement of small amplitude which leads to the formulation of cracks. The wheel seat of the axle is the weak zone for fatigue with the impact of fretting; hence to minimize this, this research deals on the analysis of fretting damages on rail vehicle axles and wheels (wheel set) with respect to the Addis Ababa light train (LRT). The main objective of this research deals with the evaluation of fretting fatigue life of wheel set by using CATIA software for the modelling purpose and finite element analysis (FEA) ANSYS workbench for fatigue life and damage analysis. The results are computed by varying the main causes of fretting that is the influence of the coefficient of friction, slip amplitude, and frequency is observed. Calculation of The main causes for the formation of fretting such as bending stress, tangential force and frequency is done. Based on these results fretting fatigue life of wheel set is observed to decrease at friction coefficients ranging from 0.1 to 0.3.in addition to this it is observed that the fretting life of the axle and wheel assembly decreases with an increase of frequency and slip amplitude ranging from 8.84 Hz up to 200Hz and 5 μm up to 25μm respectively. Finally fretting damage is observed to increase with an increment of coefficient of friction, slip amplitude and frequency by the analysis made mathematically and using ANSYS software; hence this thesis would be applicable and will contribute detail information in our country railway system by reducing failures that arise due to fretting. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/24004 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Fretting Damage | en_US |
| dc.subject | Addis Ababa Light Rail Train Wheel Set | en_US |
| dc.subject | Predicting | en_US |
| dc.subject | Analysis | en_US |
| dc.title | Predicting the Analysis of Fretting Damage for Addis Ababa Light Rail Train Wheel Set | en_US |
| dc.type | Thesis | en_US |