Effects of braiding angle on modal experimental analysis of three-dimensional and five-directional braided composites |
| |
| Authors: | Yan Gao Jialu Li |
| |
| Affiliation: | 1. School of Energy and Power Engineering, Beihang University, Beijing 100191, China;2. Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China;3. Beijing Key Laboratory of Aero-Engine Structure and Strength, Beijing 100191, China;4. Department of Mechanical Engineering, Inha University, Incheon 402-751, South Korea;5. Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA;1. Composites Research Institute, and Education Ministry Key Laboratory of Advanced Textile Composite Materials, Tianjin Polytechnic University, Tianjin 300160, China;2. School of Material Science and Engineering, and State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China;3. Centre for Nanoscale Science & Technology, Centre for Maritime Engineering, Control and Imaging, School of Computer Science, Engineering and Mathematics, Flinders University, South Australia 5042, Australia;4. P.B. 74#, East Campus, China Agricultural University, Beijing 100083, PR China;1. Composites Research Institute of Tianjin Polytechnic University, Key Laboratory of Advanced Textile Composite Materials, Tianjin 300160, China;2. Composites Research Institute of Tianjin and Education Ministry, Key Laboratory of Advanced Textile Composite Materials, Tianjin 300160, China;3. P.B. 74#, East Campus, China Agricultural University, Beijing 100083, China;4. School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China;5. Department of the Management and Construction of Teaching Resources, Tianjin Radio & TV University, Tianjin, China |
| |
| Abstract: | In this paper, the experimental modal analysis of three dimensional (3D) and five (5)-directional braided composite cantilever beams with different braiding angle was conducted systematically with a simple testing system. Preforms were made by four-step 1 × 1 square integral braiding method. The first three order modes of composite specimens were derived, which are different with braiding angles. The experimental result and mechanism were discussed. Experimental observations and analytical predictions show that the natural frequency of specimens decreased and the damping ratio of specimens increased when the braiding angle increased. Furthermore, specimens with smaller braiding angle will be valuable for the better anti-exiting property, and have an opposite effect on dissipation of vibration energy. The comparison between the specimens with different braiding angles reveals that braiding angle is a crucial factor for the vibration performance design of 3D and 5-directional braided composites. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
