Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method
Unlike monocrystalline cubic boron nitride (CBN), polycrystalline CBN (PCBN) shows not only higher fracture resistance induced by tool-workpiece interaction but also better self-sharpening capability; therefore, efforts have been devoted to the study of PCBN applications in manufacturing engineering...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/55812/ |
| _version_ | 1848799220289503232 |
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| author | Huang, Xin Li, Haonan Rao, Zhiwen Ding, Wenfeng |
| author_facet | Huang, Xin Li, Haonan Rao, Zhiwen Ding, Wenfeng |
| author_sort | Huang, Xin |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Unlike monocrystalline cubic boron nitride (CBN), polycrystalline CBN (PCBN) shows not only higher fracture resistance induced by tool-workpiece interaction but also better self-sharpening capability; therefore, efforts have been devoted to the study of PCBN applications in manufacturing engineering. Most of the studies, however, remain qualitative due to difficulties in experimental observations and theoretical modeling and provide limited in-depth understanding of the self-sharpening behavior/mechanism. To fill this research gap, the present study investigates the self-sharpening process of PCBN abrasives in grinding and analyzes the macro-scale fracture behavior and highly localized micro-scale crack propagation in detail. The widely employed finite element (FE) method, together with the classic Voronoi diagram and cohesive element technique, is used considering the pronounced success of FE applications in polycrystalline material modeling. Grinding trials with careful observation of the PCBN abrasive morphologies are performed to validate the proposed method. The self-sharpening details, including fracture morphology, grinding force, strain energy, and damage dissipation energy, are studied. The effects of maximum grain cut depths (MGCDs) and grinding speeds on the PCBN fracture behavior are discussed, and their optimum ranges for preferable PCBN self-sharpening performance are suggested. |
| first_indexed | 2025-11-14T20:32:12Z |
| format | Article |
| id | nottingham-55812 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:32:12Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | nottingham-558122019-01-04T09:51:00Z https://eprints.nottingham.ac.uk/55812/ Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method Huang, Xin Li, Haonan Rao, Zhiwen Ding, Wenfeng Unlike monocrystalline cubic boron nitride (CBN), polycrystalline CBN (PCBN) shows not only higher fracture resistance induced by tool-workpiece interaction but also better self-sharpening capability; therefore, efforts have been devoted to the study of PCBN applications in manufacturing engineering. Most of the studies, however, remain qualitative due to difficulties in experimental observations and theoretical modeling and provide limited in-depth understanding of the self-sharpening behavior/mechanism. To fill this research gap, the present study investigates the self-sharpening process of PCBN abrasives in grinding and analyzes the macro-scale fracture behavior and highly localized micro-scale crack propagation in detail. The widely employed finite element (FE) method, together with the classic Voronoi diagram and cohesive element technique, is used considering the pronounced success of FE applications in polycrystalline material modeling. Grinding trials with careful observation of the PCBN abrasive morphologies are performed to validate the proposed method. The self-sharpening details, including fracture morphology, grinding force, strain energy, and damage dissipation energy, are studied. The effects of maximum grain cut depths (MGCDs) and grinding speeds on the PCBN fracture behavior are discussed, and their optimum ranges for preferable PCBN self-sharpening performance are suggested. Elsevier 2018-11-22 Article PeerReviewed application/pdf en cc_by_nc_nd https://eprints.nottingham.ac.uk/55812/1/Fracture%20behavior%20and%20self-sharpening%20mechanisms%20of%20polycrystalline%20cubic%20boron%20nitride%20in%20grinding%20based%20on%20cohesive%20element%20method%20.pdf Huang, Xin, Li, Haonan, Rao, Zhiwen and Ding, Wenfeng (2018) Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method. Chinese Journal of Aeronautics . ISSN 1000-9361 Cohesive element theory; Finite element model; Fracture behavior scale; PCBN abrasive grain; Voronoi diagram http://dx.doi.org/10.1016/j.cja.2018.11.004 doi:10.1016/j.cja.2018.11.004 doi:10.1016/j.cja.2018.11.004 |
| spellingShingle | Cohesive element theory; Finite element model; Fracture behavior scale; PCBN abrasive grain; Voronoi diagram Huang, Xin Li, Haonan Rao, Zhiwen Ding, Wenfeng Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title | Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title_full | Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title_fullStr | Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title_full_unstemmed | Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title_short | Fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| title_sort | fracture behavior and self-sharpening mechanisms of polycrystalline cubic boron nitride in grinding based on cohesive element method |
| topic | Cohesive element theory; Finite element model; Fracture behavior scale; PCBN abrasive grain; Voronoi diagram |
| url | https://eprints.nottingham.ac.uk/55812/ https://eprints.nottingham.ac.uk/55812/ https://eprints.nottingham.ac.uk/55812/ |