Low-velocity impact damage on dispersed stacking sequence laminates. Part II: Numerical simulations |
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| Authors: | CS Lopes PP Camanho Z Gürdal P Maimí EV González |
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| Affiliation: | 1. Faculteit Luchtvaart- en Ruimtevaarttechniek, Technische Universiteit Delft, Kluyverweg 1, 2629 HS Delft, The Netherlands;2. DEMEGI, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;3. AMADE, Escola Politècnica Superior, Universitat de Girona, Girona, Spain;1. School of Aeronautics, Northwestern Polytechnical University, Xi''an, 710072, China;2. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing, 100190, China;3. Airworthiness Certification Center, Civil Aviation Administration of China, Beijing, 100102, China;4. Shaanxi Key Laboratory of Impact Dynamics and its Engineering Applications, Xi''an, 710072, China;1. Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China;2. First Aircraft Institute of Aviation Industry Corporation, Xi’an 710089, China;3. School of Materials Science and Engineering, Shanghai Jiaotong University, Shanghai 200030, China;1. Department of Aerospace Engineering, Middle East Technical University, Ankara, Turkey;2. Helicopter Group, Turkish Aerospace Industries Inc., Ankara, Turkey;3. METUWIND, METU Center for Wind Energy, Ankara, Turkey;4. Engineering Systems Division, Massachusetts Institute of Technology, Cambridge, MA, USA;1. School of Mechanical and Aerospace Engineering, Queen`s University Belfast, Ashby Building, Belfast BT9 5AH, UK;2. Engineering Department, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK;1. LMT-Cachan/ENS-Cachan/CNRS/Université Paris Saclay, 61 av. Du P?esident Wilson, 94235 Cachan Cedex, France;2. Advanced Composite Centre for Innovation and Science (ACCIS), University of Bristol, Queens Building, University Walk, Bristol BS8 1TR, UK;1. Institute of Chemical Machinery and Process Equipment, Zhejiang University, Hangzhou 310027, China;2. State Key Laboratory of Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China;3. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | This paper is the follow-up on the previous work by the authors on the experimental evaluation of the impact damage resistance of laminates with dispersed stacking sequences. The current work focuses on the evaluation of the impact performance of the tested laminates by innovative numerical methods.Constitutive models which take into account the physical progressive failure behaviour of fibres, matrix, and interfaces between plies were implemented in an explicit finite element method and used in the simulation of low-velocity impact events on composite laminates. The computational effort resulted in reliable predictions of the impact dynamics, impact footprint, locus and size of delaminations, matrix cracks and fibre damage, as well as the amount of energy dissipated through delaminations, intraply damage and friction. The accuracy achieved with this method increases the reliability of numerical methods in the simulation of impact loads enabling the reduction of the time and costs associated with mechanical testing. |
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