Dynamic behaviour of sandwich plates containing single/multiple debonding |
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| Authors: | VN Burlayenko T Sadowski |
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| Affiliation: | 1. Department of Applied Mathematics, National Technical University ‘KhPI’, Frunze 21, 61002 Kharkov, Ukraine;2. Department of Solid Mechanics, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, Poland;1. Ovidius University of Constanta Romania;2. University of Stuttgart Germany;1. Key Laboratory for Liquid-solid Structural Evolution & Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China;2. National Key Laboratory of Advanced Composites, AVIC Composites Center, Beijing, 100095, China;1. Institute of Applied Mechanics, RWTH Aachen University, 52074 Aachen, Germany;2. NASA Glenn Research Center, Cleveland, OH 44135, USA;1. AML, School of Aerospace, Tsinghua University, Beijing 100084, China;2. National Center for Nanoscience and Technology, Beijing 100190, China;3. LTCS, College of Engineering, Peking University, Beijing 100871, China;1. Department of Mechanical Engineering, Madanapalle Institute of Technology & Science, Madanapalle, Andhra Pradesh 517325, India;2. Department of Mechanical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha 769008, India;3. School of Mechanical Engineering, KIIT Bhubaneswar (Deemed to be University), Bhubaneswar 751024, Odisha, India |
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| Abstract: | Debonding is one of most severe defects associated with sandwich composite structures. The damage inflicted on debonding may lead to the significant degradation of the load carrying capacity of sandwich structures and affects their mechanical behaviours. Free vibration analyses of sandwich plates with honeycomb and PVC foam cores containing single/multiple debonding are carried out. Dynamic characteristics such as natural frequencies and corresponding mode shapes of sandwich plates with and without debonding are calculated using the commercial finite element code ABAQUS. Parametric studies over a wide range of size, location and number of debonding zones to examine the influence of these parameters on the overall dynamic behaviour of the damaged plates are performed. As a consequence, natural frequencies and mode shapes are being calculated as functions of these parameters that enable to draw conclusions concerning the debonding influence. |
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