Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming
Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due t...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Bambach, Markus [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
s.l. Stafa-Zurich, Switzerland: 2007 |
|---|
| Anmerkung: |
https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 |
|---|---|
| Umfang: |
Online-Ressource (8 pages) |
| Reproduktion: |
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 |
|---|---|
| Übergeordnetes Werk: |
In: Key engineering materials - Uetikon a.S. : Trans Tech Publications, 1986, Vol. 344 (July 2007), p. 511-518 |
| Übergeordnetes Werk: |
volume:344 ; year:2007 ; pages:511-518 |
| Links: |
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| DOI / URN: |
10.4028/www.scientific.net/KEM.344.511 |
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| 520 | |a Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design | ||
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10.4028/www.scientific.net/KEM.344.511 doi (DE-627)NLEJ23824282X DE-627 ger DE-627 rakwb eng Bambach, Markus verfasserin aut Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (8 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Todorova, M. oth Hirt, Gerhard oth In Key engineering materials Uetikon a.S. : Trans Tech Publications, 1986 Vol. 344 (July 2007), p. 511-518 Online-Ressource (DE-627)NLEJ237794934 (DE-600)2073306-9 1013-9826 nnns volume:344 year:2007 pages:511-518 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 344 2007 511-518 Vol. 344 (July 2007), p. 511-518 |
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10.4028/www.scientific.net/KEM.344.511 doi (DE-627)NLEJ23824282X DE-627 ger DE-627 rakwb eng Bambach, Markus verfasserin aut Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (8 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Todorova, M. oth Hirt, Gerhard oth In Key engineering materials Uetikon a.S. : Trans Tech Publications, 1986 Vol. 344 (July 2007), p. 511-518 Online-Ressource (DE-627)NLEJ237794934 (DE-600)2073306-9 1013-9826 nnns volume:344 year:2007 pages:511-518 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 344 2007 511-518 Vol. 344 (July 2007), p. 511-518 |
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10.4028/www.scientific.net/KEM.344.511 doi (DE-627)NLEJ23824282X DE-627 ger DE-627 rakwb eng Bambach, Markus verfasserin aut Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (8 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Todorova, M. oth Hirt, Gerhard oth In Key engineering materials Uetikon a.S. : Trans Tech Publications, 1986 Vol. 344 (July 2007), p. 511-518 Online-Ressource (DE-627)NLEJ237794934 (DE-600)2073306-9 1013-9826 nnns volume:344 year:2007 pages:511-518 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 344 2007 511-518 Vol. 344 (July 2007), p. 511-518 |
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10.4028/www.scientific.net/KEM.344.511 doi (DE-627)NLEJ23824282X DE-627 ger DE-627 rakwb eng Bambach, Markus verfasserin aut Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (8 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Todorova, M. oth Hirt, Gerhard oth In Key engineering materials Uetikon a.S. : Trans Tech Publications, 1986 Vol. 344 (July 2007), p. 511-518 Online-Ressource (DE-627)NLEJ237794934 (DE-600)2073306-9 1013-9826 nnns volume:344 year:2007 pages:511-518 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 344 2007 511-518 Vol. 344 (July 2007), p. 511-518 |
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10.4028/www.scientific.net/KEM.344.511 doi (DE-627)NLEJ23824282X DE-627 ger DE-627 rakwb eng Bambach, Markus verfasserin aut Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming s.l. Stafa-Zurich, Switzerland 2007 Online-Ressource (8 pages) nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008 Todorova, M. oth Hirt, Gerhard oth In Key engineering materials Uetikon a.S. : Trans Tech Publications, 1986 Vol. 344 (July 2007), p. 511-518 Online-Ressource (DE-627)NLEJ237794934 (DE-600)2073306-9 1013-9826 nnns volume:344 year:2007 pages:511-518 https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext https://doi.org//10.4028/www.scientific.net/KEM.344.511 text/html Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-SNT GBV_NL_ARTICLE AR 344 2007 511-518 Vol. 344 (July 2007), p. 511-518 |
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Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming |
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Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming |
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Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming |
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Bambach, Markus |
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Bambach, Markus |
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10.4028/www.scientific.net/KEM.344.511 |
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experimental and numerical analysis of forming limits in cnc incremental sheet forming |
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Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming |
| abstract |
Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 |
| abstractGer |
Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 |
| abstract_unstemmed |
Asymmetric incremental sheet forming (AISF) is a relatively new manufacturing processfor the production of low volumes of sheet metal parts. Forming is accomplished by the CNCcontrolled movements of a simple ball-headed tool that follows a 3D trajectory to gradually shapethe sheet metal blank. Due to the local plastic deformation under the tool, there is almost no draw-infrom the flange region to avoid thinning in the forming zone. As a consequence, sheet thinninglimits the amount of bearable deformation, and thus the range of possible applications. Muchattention has been given to the maximum strains that can be attained in AISF. Several authors havefound that the forming limits are considerably higher than those obtained using a Nakazima test andthat the forming limit curve is approximately a straight line (mostly having a slope of -1) in thestretching region of the FLD. Based on these findings they conclude that the “conventional”forming limit curves cannot be used for AISF and propose dedicated tests to record forming limitdiagrams for AISF. Up to now, there is no standardised test and no evaluation procedure for thedetermination of FLCs for AISF. In the present paper, we start with an analysis of the range ofstrain states and strain paths that are covered by the various tests that can be found in the literature.This is accomplished by means of on-line deformation measurements using a stereovision system.From these measurements, necking and fracture limits are derived. It is found that the fracture limitscan be described consistently by a straight line with negative slope. The necking limits seem to behighly dependent on the test shapes and forming parameters. It is concluded that standardisation inboth testing conditions and the evaluation procedures is necessary, and that a forming limit curvedoes not seem to be an appropriate tool to predict the feasibility of a given part design https://getinfo.de/app/details?id=transtech:doi~10.4028%252Fwww.scientific.net%252FKEM.344.511 |
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Experimental and Numerical Analysis of Forming Limits in CNC Incremental Sheet Forming |
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https://www.tib.eu/de/openurl/search/?pid=doi:10.4028/www.scientific.net/KEM.344.511 https://doi.org//10.4028/www.scientific.net/KEM.344.511 |
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