Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model
The incremental sheet forming (ISF) process is considered as a feasible solution for forming a variety of small batch and even customised sheet components. The quality of an ISF product is affected by various process parameters, e.g. sheet material, step-down, feed rate, tool diameter and lubricant....
| Main Authors: | , , , , |
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| Format: | Article |
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Springer
2018
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| Online Access: | https://eprints.nottingham.ac.uk/53089/ |
| _version_ | 1848798874511081472 |
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| author | Gatea, Shakir Lu, Bin Chen, Jun Ou, Hengan McCartney, Graham |
| author_facet | Gatea, Shakir Lu, Bin Chen, Jun Ou, Hengan McCartney, Graham |
| author_sort | Gatea, Shakir |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The incremental sheet forming (ISF) process is considered as a feasible solution for forming a variety of small batch and even customised sheet components. The quality of an ISF product is affected by various process parameters, e.g. sheet material, step-down, feed rate, tool diameter and lubricant. To produce an ISF part of sufficient quality and accuracy without defects, optimal parameters of the ISF process should be selected. In the present work, experiments and FE analyses were conducted to evaluate the influence of the main ISF process parameters including the step-down, feed rate and tool diameter on the formability and fracture of two types of pure Ti (grade 1 and 2). The Gurson–Tvergaard-Needleman (GTN) damage constitutive model with consideration of stress triaxiality was developed to predict ductile fracture in the ISF process due to void nucleation, growth and coalescence. It was found that the ISF parameters have varying degrees of effect on the formability and fracture occurrence of the two types of pure Ti, and grade 2 pure Ti sheet is more sensitive than grade 1 Ti sheet to the forming parameters due to low ductility. |
| first_indexed | 2025-11-14T20:26:42Z |
| format | Article |
| id | nottingham-53089 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:26:42Z |
| publishDate | 2018 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-530892020-05-04T19:47:03Z https://eprints.nottingham.ac.uk/53089/ Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model Gatea, Shakir Lu, Bin Chen, Jun Ou, Hengan McCartney, Graham The incremental sheet forming (ISF) process is considered as a feasible solution for forming a variety of small batch and even customised sheet components. The quality of an ISF product is affected by various process parameters, e.g. sheet material, step-down, feed rate, tool diameter and lubricant. To produce an ISF part of sufficient quality and accuracy without defects, optimal parameters of the ISF process should be selected. In the present work, experiments and FE analyses were conducted to evaluate the influence of the main ISF process parameters including the step-down, feed rate and tool diameter on the formability and fracture of two types of pure Ti (grade 1 and 2). The Gurson–Tvergaard-Needleman (GTN) damage constitutive model with consideration of stress triaxiality was developed to predict ductile fracture in the ISF process due to void nucleation, growth and coalescence. It was found that the ISF parameters have varying degrees of effect on the formability and fracture occurrence of the two types of pure Ti, and grade 2 pure Ti sheet is more sensitive than grade 1 Ti sheet to the forming parameters due to low ductility. Springer 2018-07-30 Article PeerReviewed Gatea, Shakir, Lu, Bin, Chen, Jun, Ou, Hengan and McCartney, Graham (2018) Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model. International Journal of Material Forming . ISSN 1960-6214 ISF; Forming parameters; Formability; Fracture; Stress triaxiality; GTN model https://link.springer.com/article/10.1007/s12289-018-1434-3 doi:10.1007/s12289-018-1434-3 doi:10.1007/s12289-018-1434-3 |
| spellingShingle | ISF; Forming parameters; Formability; Fracture; Stress triaxiality; GTN model Gatea, Shakir Lu, Bin Chen, Jun Ou, Hengan McCartney, Graham Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title | Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title_full | Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title_fullStr | Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title_full_unstemmed | Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title_short | Investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| title_sort | investigation of the effect of forming parameters in incremental sheet forming using a micromechanics based damage model |
| topic | ISF; Forming parameters; Formability; Fracture; Stress triaxiality; GTN model |
| url | https://eprints.nottingham.ac.uk/53089/ https://eprints.nottingham.ac.uk/53089/ https://eprints.nottingham.ac.uk/53089/ |