Contact mechanics of half-space with micro-structures
The study of contact mechanics has traditionally focused on stress distributions within a uniform half-space. However, in industries dealing with micro and nano-scale devices, understanding contact mechanics in a non-uniform half-space has become increasingly relevant. This project explores the cont...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/181751 |
| _version_ | 1826111226519748608 |
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| author | Muhammad Nabil Bin Abdul Rahim |
| author2 | Fan Hui |
| author_facet | Fan Hui Muhammad Nabil Bin Abdul Rahim |
| author_sort | Muhammad Nabil Bin Abdul Rahim |
| collection | NTU |
| description | The study of contact mechanics has traditionally focused on stress distributions within a uniform half-space. However, in industries dealing with micro and nano-scale devices, understanding contact mechanics in a non-uniform half-space has become increasingly relevant. This project explores the contact stress behaviour in non-uniform half-space using finite element analysis (FEA) implemented through ANSYS. By modelling micro-structured surfaces and their interactions with contact indentors of varying geometric shapes and dimensions, this study aims to provide new insights into the mechanical behaviour of non-uniform and rough surfaces. The findings have significant implications for the design and optimization of micro and nano-scale devices, where accurate surface property detection is crucial.
This Final Year Report evaluates the contact mechanics of a half-space with micro-structures. A finite element scheme is used to develop a micro-mechanics model for rough surface contact with varying profiles and asperities (surface roughness or irregularities). The dimensionless average real pressure is obtained as a function of the ratio of the real contact area to the apparent contact area (A0 / An). The finite element method (FEM), implemented in ANSYS, is employed to study the contact behaviour between two materials: polymer and structural steel. These materials were selected based on their differing Young’s modulus ratios while maintaining the same Poisson’s ratio. |
| first_indexed | 2025-03-09T10:16:15Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/181751 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T10:16:15Z |
| publishDate | 2024 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1817512024-12-21T16:52:34Z Contact mechanics of half-space with micro-structures Muhammad Nabil Bin Abdul Rahim Fan Hui School of Mechanical and Aerospace Engineering MHFAN@ntu.edu.sg Engineering The study of contact mechanics has traditionally focused on stress distributions within a uniform half-space. However, in industries dealing with micro and nano-scale devices, understanding contact mechanics in a non-uniform half-space has become increasingly relevant. This project explores the contact stress behaviour in non-uniform half-space using finite element analysis (FEA) implemented through ANSYS. By modelling micro-structured surfaces and their interactions with contact indentors of varying geometric shapes and dimensions, this study aims to provide new insights into the mechanical behaviour of non-uniform and rough surfaces. The findings have significant implications for the design and optimization of micro and nano-scale devices, where accurate surface property detection is crucial. This Final Year Report evaluates the contact mechanics of a half-space with micro-structures. A finite element scheme is used to develop a micro-mechanics model for rough surface contact with varying profiles and asperities (surface roughness or irregularities). The dimensionless average real pressure is obtained as a function of the ratio of the real contact area to the apparent contact area (A0 / An). The finite element method (FEM), implemented in ANSYS, is employed to study the contact behaviour between two materials: polymer and structural steel. These materials were selected based on their differing Young’s modulus ratios while maintaining the same Poisson’s ratio. Bachelor's degree 2024-12-17T12:13:31Z 2024-12-17T12:13:31Z 2024 Final Year Project (FYP) Muhammad Nabil Bin Abdul Rahim (2024). Contact mechanics of half-space with micro-structures. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/181751 https://hdl.handle.net/10356/181751 en B063 application/pdf Nanyang Technological University |
| spellingShingle | Engineering Muhammad Nabil Bin Abdul Rahim Contact mechanics of half-space with micro-structures |
| title | Contact mechanics of half-space with micro-structures |
| title_full | Contact mechanics of half-space with micro-structures |
| title_fullStr | Contact mechanics of half-space with micro-structures |
| title_full_unstemmed | Contact mechanics of half-space with micro-structures |
| title_short | Contact mechanics of half-space with micro-structures |
| title_sort | contact mechanics of half space with micro structures |
| topic | Engineering |
| url | https://hdl.handle.net/10356/181751 |
| work_keys_str_mv | AT muhammadnabilbinabdulrahim contactmechanicsofhalfspacewithmicrostructures |