首页 | 本学科首页   官方微博 | 高级检索  
     


Analysis of the thermomechanical shear behaviour of woven-reinforced thermoplastic-matrix composites during forming
Affiliation:1. Institute of Polymer Product Engineering, Johannes Kepler University, Altenbergerstraße 69, 4040 Linz, Austria;2. Institute of Polymer Injection Moulding and Process Automation, Johannes Kepler University, Altenbergerstraße 69, 4040 Linz, Austria;3. Center for Lightweight Composite Technologies, Engel Austria GmbH, Steyrer Straße 20, 4300 St. Valentin, Austria;1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China;2. Institute of Aeronautical Manufacturing Technology, Shanghai Aircraft Manufacturing Co., Ltd, Shanghai 201324, China;1. Département de génie mécanique, Université du Québec à Trois-Rivières, 3351 boul. des Forges, Trois-Rivières, QC G9A 5H7, Canada;2. Département de génie mécanique, École de technologies supérieures, 1100 rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada;1. Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA;2. Ford Motor Company, Dearborn, MI, USA;3. Dow Chemical Company, Midland, MI, USA;4. Livermore Software Technology Corporation, Livermore, CA, USA;1. Department of Mechanical Engineering, University of Massachusetts Lowell, 1 University Ave., Lowell, MA 01854, USA;2. US Army Natick Soldier Research, Development & Engineering Center, 15 Kansas St., Natick, MA 01760, USA;1. Chair of Carbon Composites, Technical University of Munich, Faculty of Mechanical Engineering, Boltzmannstraße 15, D-85478 Garching b. München, Germany;2. LMC2, Université Lyon 1, 82 Blvd. Niels Bohr, Domaine Science DOUA, F-69622 Villeurbanne Cedex, France
Abstract:Shear behaviour of a glass fibre/polypropylene composite is characterized over a wide range of strain rates and forming temperatures using the bias extension test. A temperature- and rate-dependent material model is here introduced to describe the observed behaviour. The model is based on a continuous approach and formulated considering a stress objective derivative based on the warp and weft yarns rotation. The effects of temperature and strain rate on the shear behaviour are analysed via bias extension test simulations. Temperature change in the sheet during forming was measured. This data is used to model cooling during forming. Isothermal and transient forming simulations were performed in order to show the effects of temperature and forming speed on the obtained shear angle distribution. It was found that at low forming speeds the assumption of isothermal forming is not valid anymore since the cooling of the sheet affects the shear behaviour.
Keywords:A  Thermoplastic resin  B  Thermomechanical  C  Finite element analysis (FEA)  E  Forming
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号