Hemming process with counteraction force to prevent creepage |
| |
| Institution: | 1. Mechanical Engineering Department 170 DHE, Oakland University, 2200 N. Squirrel Road, Rochester, MI 48309-4401, USA;2. Ford Motor Company, Ford Research and Innovation Center, P.O. Box 2053, Mail Drop 3135 RIC, Dearborn, MI 48121-2053, USA;1. Department of Materials Science and Metallurgical Engineering, Indian Institute of Technology Hyderabad, Sangareddy 502285, India;2. Presently with Rastriya Ispat Nigam Limited, Vizag Steel Plant, Visakhapatnam 53003, India;3. Presently with Renault Nissan TBCI Pvt. Ltd., Mahindra World City, 603004, India;4. Department of Mechanical and Aerospace Engineering, Indian Institute of Technology Hyderabad, Sangareddy 502285, India;1. Department of Engineering and Technology, University of Wolverhampton, Telford Campus, Telford TF2 9NT, United Kingdom;2. School of Engineering and Informatics, University of Sussex, Sussex House, Brighton BN1 9RH, United Kingdom;3. Hadley Industries plc, P.O. Box 92, Downing Street, Smethwick, West Midlands B66 2PA, United Kingdom;1. Univ. Bretagne Sud, FRE CNRS 3744, IRDL, F-56100 Lorient, France;2. Institute for Frontier Materials, Deakin University, Geelong Waurn Ponds, VIC 3220, Australia;3. Department of Mechanical Engineering, KAIST, Deajeon 305-701, Republic of Korea;1. Department of Mechanical, Automotive, and Materials Engineering, University of Windsor, 401 Sunset Ave., Windsor N9B 3P4, Canada;2. Ford Research & Innovation Center, Dearborn, MI, USA;1. Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, D-01069 Dresden, Germany;2. Technische Universität Dresden, Institute of Manufacturing Technology, George-Bähr-Str. 3c, D-01069 Dresden, Germany;3. Fraunhofer IWS Dresden, Winterbergstr. 28, D-01277 Dresden, Germany |
| |
| Abstract: | Creepage, a typical phenomenon in the hemming process, can be defined as undesired roll-in of the panel at the bending line. Creepage also reduces the final panel width and makes the hemming radius larger. In this study, experimental observations are reported, and a finite element model, based on the LS-DYNA® two dimensional plane strain solid formulation, is utilized to study the mechanics of how the hem flange bends and folds during the hemming process. A novel hemming process incorporating a counteraction force is proposed in order to prevent the creepage phenomenon during the hemming process. An experimental hemming tool was designed according to this concept, and optimization of the tooling geometry was carried out utilizing the finite element model. An experimental study was conducted to confirm that the new hemming process can prevent creep be employed to help retain a sharp radius during flanging operation. |
| |
| Keywords: | Hemming Creepage Sharp radius Tooling design Static model |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
