Normal impact behaviour of C/SiC rigid‐felt titanium alloy three‐layered plate |
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| Authors: | L Chen X Yao S Cen S Wang |
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| Affiliation: | 1. Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing, China;2. High Performance Computing Center, School of Aerospace Engineering, Tsinghua University, Beijing, China;3. State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering, National University of Defense Technology, Changsha, China |
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| Abstract: | In this paper, impact damage behaviours of C/SiC rigid‐felt titanium alloy three‐layered plate under normal impact are investigated. First, low velocity impact experiment of the three‐layered plate is performed by means of a drop weight impact apparatus. Second, the finite element model of the three‐layered plate is established using a damage constitutive model; also, the influences of the initial kinetic energy (the initial velocity and the mass of the impactor) on stress distributions and damage patterns of the three‐layered plate are analysed. Finally, the energy dissipation mechanisms and failure characterizations of the three‐layered plate are discussed; also, the agreements of physical variables and damage morphologies between experimental and numerical results validate the reliability of numerical simulation. The results will play an important role in designing and evaluating advanced thermal protection structure. |
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| Keywords: | C/SiC composite damage finite element analysis low‐velocity impact multilayered plate thermal protection structure (TPS) |
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