Ductile deformation mechanisms and designing instructions for integrated woven textile sandwich composites |
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| Authors: | Hualin Fan Long Zhao Hailong Chen Ning Kuang Chaokun Yang Shiqing Huang Yifan Jiang |
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| Affiliation: | 1. Laboratory of Structural Analysis for Defense Engineering and Equipment, College of Mechanics and Materials, Hohai University, Nanjing 210098, China;2. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;3. PLA University of Science and Technology, Nanjing 210007, China;4. Nanjing Fiberglass Research & Design Institute, Sinoma Science & Technology Co. Ltd, Nanjing 210012, China;5. MOE Key Lab of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou 510632, China |
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| Abstract: | To suggest designing instructions for integrated woven textile sandwich composites (IWTSCs), anti-crush properties of IWTSC and the corresponding ductile deformation mechanism were investigated. Quasi-static out-of-plane crushing and dynamic impact tests were carried out. Typical deformation curves with a relative stable deformation plateau were obtained from tests. Failure of IWTSC is ductile through coupled compression–shear deformation. An analytical plastic model was proposed to explain ductile mechanism of IWTSC qualitatively, including densification caused by interactions among inclined piles. Combining with qualitative analysis, comparisons between two kinds of IWTSC panels with piles of different density and thickness reveal the key to design a ductile IWTSC. |
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| Keywords: | A. Textile composites B. Mechanical properties B. Stress/strain curves C. Deformation C. Modelling |
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