Fracture mechanics investigation for a 3-D crack in a MRT rail
Fatigue crack growth has always been a concern for railways as it might lead to derailment which causes catastrophic consequences. When the crack is subjected to cyclic rolling contact due to regular movement of the trains, the rate of crack growth greatly increases. Although there were several stud...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/10356/74317 |
| _version_ | 1811696126538022912 |
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| author | Lim, Yu Heng |
| author2 | Xiao Zhongmin |
| author_facet | Xiao Zhongmin Lim, Yu Heng |
| author_sort | Lim, Yu Heng |
| collection | NTU |
| description | Fatigue crack growth has always been a concern for railways as it might lead to derailment which causes catastrophic consequences. When the crack is subjected to cyclic rolling contact due to regular movement of the trains, the rate of crack growth greatly increases. Although there were several studies previously done on fatigue crack growth, little research had been done to understand the crack growth due to cyclic loading. Numerical simulations were done to better understand the behaviour of crack growth under different parameters instead of conducting a full-scale experiment with actual scenarios due to the high cost involved. Simulations were done using a finite element software, ABAQUS. A total of 52 two dimensional configurations and 22 three dimensional configurations were simulated with varying conditions to allow observations of trends and behaviours. |
| first_indexed | 2024-10-01T07:34:24Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/74317 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:34:24Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/743172023-03-04T18:44:00Z Fracture mechanics investigation for a 3-D crack in a MRT rail Lim, Yu Heng Xiao Zhongmin School of Mechanical and Aerospace Engineering DRNTU::Engineering Fatigue crack growth has always been a concern for railways as it might lead to derailment which causes catastrophic consequences. When the crack is subjected to cyclic rolling contact due to regular movement of the trains, the rate of crack growth greatly increases. Although there were several studies previously done on fatigue crack growth, little research had been done to understand the crack growth due to cyclic loading. Numerical simulations were done to better understand the behaviour of crack growth under different parameters instead of conducting a full-scale experiment with actual scenarios due to the high cost involved. Simulations were done using a finite element software, ABAQUS. A total of 52 two dimensional configurations and 22 three dimensional configurations were simulated with varying conditions to allow observations of trends and behaviours. Bachelor of Engineering (Mechanical Engineering) 2018-05-15T08:47:31Z 2018-05-15T08:47:31Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/74317 en Nanyang Technological University 77 p. application/pdf |
| spellingShingle | DRNTU::Engineering Lim, Yu Heng Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title | Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title_full | Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title_fullStr | Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title_full_unstemmed | Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title_short | Fracture mechanics investigation for a 3-D crack in a MRT rail |
| title_sort | fracture mechanics investigation for a 3 d crack in a mrt rail |
| topic | DRNTU::Engineering |
| url | http://hdl.handle.net/10356/74317 |
| work_keys_str_mv | AT limyuheng fracturemechanicsinvestigationfora3dcrackinamrtrail |