Stress and fracture analysis of short flat bars with projections using boundary element method
Short flat bars with projections are widely used in many applications as a means of transmitting axial load between two components. With short flat bars with projections being ubiquitous across many sectors, it is of paramount importance that engineers design a safe bar to prevent accidents. H...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/166839 |
| _version_ | 1826117533738991616 |
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| author | Mok, Jing Wen |
| author2 | Ang Hock Eng |
| author_facet | Ang Hock Eng Mok, Jing Wen |
| author_sort | Mok, Jing Wen |
| collection | NTU |
| description | Short flat bars with projections are widely used in many applications as a means of
transmitting axial load between two components. With short flat bars with projections
being ubiquitous across many sectors, it is of paramount importance that engineers
design a safe bar to prevent accidents. However, often times, fatigue failure occur in
them due to geometric discontinuities and cracks.
In this report, the stress and fracture analysis of short flat bars with projections using
Boundary Element Method (BEM) were conducted and examined. Varying
geometrical parameters, boundary conditions and loading conditions were subjected
on both short flat bars with projections without and with crack to understand their
effects on the stress experienced by the short flat bar. Results obtained showed that
high stress concentration was always located at geometric discontinuities, i.e., the fillet
of short flat bars with projections. In addition, findings indicated that local constraints
led to higher stress experienced by the component as compared to remote constraints.
A decrease in fillet radius, a decrease in head length and an increase in head depth by
and large also led to an increase in the stress concentration factor. Depending on the
conditions, the relationship between these variables and the stress concentration factor
may differ. On the other hand, an increase in head length, head depth and a decrease
in fillet radius led to an increase in stress intensity factor.
All in all, this project aims to provide a deeper understanding on the factors affecting
the stress concentration in short flat bars with projections to enable engineers to
enhance the safety and security of these bars. |
| first_indexed | 2024-10-01T04:28:52Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/166839 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:28:52Z |
| publishDate | 2023 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1668392023-05-13T16:51:14Z Stress and fracture analysis of short flat bars with projections using boundary element method Mok, Jing Wen Ang Hock Eng School of Mechanical and Aerospace Engineering MHEANG@ntu.edu.sg Engineering::Mechanical engineering Short flat bars with projections are widely used in many applications as a means of transmitting axial load between two components. With short flat bars with projections being ubiquitous across many sectors, it is of paramount importance that engineers design a safe bar to prevent accidents. However, often times, fatigue failure occur in them due to geometric discontinuities and cracks. In this report, the stress and fracture analysis of short flat bars with projections using Boundary Element Method (BEM) were conducted and examined. Varying geometrical parameters, boundary conditions and loading conditions were subjected on both short flat bars with projections without and with crack to understand their effects on the stress experienced by the short flat bar. Results obtained showed that high stress concentration was always located at geometric discontinuities, i.e., the fillet of short flat bars with projections. In addition, findings indicated that local constraints led to higher stress experienced by the component as compared to remote constraints. A decrease in fillet radius, a decrease in head length and an increase in head depth by and large also led to an increase in the stress concentration factor. Depending on the conditions, the relationship between these variables and the stress concentration factor may differ. On the other hand, an increase in head length, head depth and a decrease in fillet radius led to an increase in stress intensity factor. All in all, this project aims to provide a deeper understanding on the factors affecting the stress concentration in short flat bars with projections to enable engineers to enhance the safety and security of these bars. Bachelor of Engineering (Mechanical Engineering) 2023-05-10T01:09:13Z 2023-05-10T01:09:13Z 2023 Final Year Project (FYP) Mok, J. W. (2023). Stress and fracture analysis of short flat bars with projections using boundary element method. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166839 https://hdl.handle.net/10356/166839 en B003 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering Mok, Jing Wen Stress and fracture analysis of short flat bars with projections using boundary element method |
| title | Stress and fracture analysis of short flat bars with projections using boundary element method |
| title_full | Stress and fracture analysis of short flat bars with projections using boundary element method |
| title_fullStr | Stress and fracture analysis of short flat bars with projections using boundary element method |
| title_full_unstemmed | Stress and fracture analysis of short flat bars with projections using boundary element method |
| title_short | Stress and fracture analysis of short flat bars with projections using boundary element method |
| title_sort | stress and fracture analysis of short flat bars with projections using boundary element method |
| topic | Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/166839 |
| work_keys_str_mv | AT mokjingwen stressandfractureanalysisofshortflatbarswithprojectionsusingboundaryelementmethod |