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A study of the integrated composite material structures under different fabrication processing
Authors:Jun Li  Xuefeng Yao  Yinghua Liu  Zhangzhi Cen  Zhejun Kou  Di Dai
Affiliation:1. Department of Engineering Mechanics, FML, Tsinghua University, Beijing 100084, PR China;2. Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, PR China;1. Department of Aerospace Engineering, 1320 Beal Avenue, Ann Arbor, MI 48109, USA;2. Department of Materials Science and Engineering, 2300 Hayward Street, Ann Arbor, MI 48109, USA;3. Department of Mechanical Engineering, 2350 Hayward, Ann Arbor, MI 48109, USA;4. Chairman—Board of Directors, Automotive Composites Consortium-ACC, and Chairman—Predictive Technology Development and Composites Crash Energy Management Group (ACC100), USCAR, Southfield, MI 48075, USA;5. Chrysler Technology Center, Chrysler Group LLC, Auburn Hills, MI 48326-2757, USA;1. Composites Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK;2. Centre for Future Materials, University of Southern Queensland, Toowoomba 4350, Queensland, Australia;1. Politecnico di Torino, Dipartimento di Ingegneria Meccanica ed Aerospaziale, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;2. Michigan State University, Composite Vehicle Research Center, 2727 Alliance Drive, Lansing, MI 48910, USA;1. Composite Structures and Processes, Cenaero, Rue des Frères Wright 29, 6041 Gosselies, Belgium;2. Institute of Mechanics, Materials and Civil Engineering, Université catholique de Louvain, Place Sainte Barbe 2, 1348 Louvain-la-Neuve, Belgium;3. Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium;1. Concordia Center for Composites (CONCOM), Department of Mechanical, Industrial and Aerospace Engineering, Concordia University, Montreal, Quebec H3G 1M8, Canada;2. Bristol Composites Institute (ACCIS), University of Bristol, Queens Building, University Walk, Bristol BS8 1TR, UK
Abstract:Based on the typical T-shaped integrated structures, three manufacturing schemes, such as co-cure, co-bonding and secondary bonding, are discussed in this paper. In the curing process of composite T-shaped integrated structures, the mechanism of the warpage deformation and internal stresses are analyzed, and a theoretical model is established. Some important curing mechanical properties of the T-shaped integrated structures are evaluated using the finite element method, including the internal temperature and the degree of cure, the warpage deformation and the internal stresses due to the internal exothermic chemical reaction and the volumetric shrinkage. The evolutions of material parameters are also considered while the degree of cure varied. And the relationships among the different manufacture schemes, the warpage deformation and internal stresses are studied. The results show that both warpage deformation and internal stresses are closely correlated with the fabrication process and the selection of different fabrication process can prominently reduce the warpage deformation and the internal stresses.
Keywords:
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