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Numerical prediction of failure in high temperature formblowing and hardening
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-4634-4373
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-7514-0513
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0001-7074-8960
2011 (engelsk)Inngår i: Hot sheet metal forming of high-performance steel, CHS2: 3rd international conference, Proceedings. Kassel, Germany, June 13-17, 2011 / [ed] Mats Oldenburg; Kurt Steinhoff; Braham Prakash, Auerbach: Verlag Wissenschaftliche Scripten , 2011, s. 57-64Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The process studied in this work is high temperature formblowing and hardening (HTFH). Bursting failure is an irrecoverable failure mode present in the HTFH process. The main objective was to determine if a ductile fracture criterion would be possible to use as pre-bursting failure indicator in finite element (FE) simulations of the forming process. The failure criterion was implemented in the utilised FE code. Calibration was performed by the use of analytical forming limit curves (FLC:s). The FLC:s were derived from experimentally obtained stress-strain curves for different temperatures using theory for localised necking. Experiments with the HTFH process in the form of burst tests were performed. Experimental data and output from thermomechanical FE simula-tions of the process were compared. Results indicated that the implemented numerical criterion predicted failure prior to irrecoverable experimental failure. It is concluded that the implemented fracture criterion can be used as a failure indicator in FE simulations of the HTFH process.

sted, utgiver, år, opplag, sider
Auerbach: Verlag Wissenschaftliche Scripten , 2011. s. 57-64
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URN: urn:nbn:se:ltu:diva-37932Lokal ID: c206228b-0782-492d-bbde-af3086105bbbISBN: 978-3-942267-17-5 (tryckt)OAI: oai:DiVA.org:ltu-37932DiVA, id: diva2:1011431
Konferanse
International Conference on Hot Sheet Metal Forming of High-Perfomance Steel : 13/06/2011 - 17/06/2011
Merknad
Godkänd; 2011; 20111230 (gorlind)Tilgjengelig fra: 2016-10-03 Laget: 2016-10-03 Sist oppdatert: 2018-04-12bibliografisk kontrollert

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