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热环境下复合式柔性蒙皮简化复合材料组合壳的模态分析
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Abstract:
针对当前变体飞机变弯度柔性前缘较高的气动载荷和较大的变形需求的问题，本研究提出并设计了一种新型柔性蒙皮模型。首先，将柔性蒙皮模型设计为复合材料–粘弹性材料组合壳结构，基于瑞利–里兹法和有限元法分析得到系统的固有频率和模态振型，与理论值进行了对比。通过改变温度、耦合角度，在多个工况下进行结果分析，讨论了温度、耦合角度对组合壳结构的固有频率和振型的影响。研究发现，温度对固有频率的影响主要来自于温度导致的材料力学性能下降，小耦合角下对低阶频率影响较大，为提高柔性蒙皮性能提供了一种新思路。
Aiming at the current problem of higher aerodynamic loads and larger deformation requirements of variable-angle flexible leading edge for morphing aircraft, a new flexible skin model is proposed and designed in this study. Firstly, the flexible skin model is designed as a composite-viscoelastic material combination shell structure, and the natural frequency and modal vibration pattern of the system are analyzed based on the Rayleigh-Ritz method and the finite element method, and compared with the theoretical values. The effects of temperature and coupling angle on the natural frequencies and vibration shapes of the combined shell structure are discussed by varying the temperature and coupling angle and analyzing the results under several working conditions. It is found that the effect of temperature on the natural frequency mainly comes from the temperature-induced degradation of the mechanical properties of the material; the small coupling angle has a greater effect on the low-order frequency, which provides a new way of thinking to improve the performance of the flexible skin.
| [1] | Jha, A.K. and Kudva, J.N. (2004) Morphing Aircraft Concepts, Classifications, and Challenges. Smart Structures and Materials 2004: Industrial and Commercial Applications of Smart Structures Technologies, San Diego, 14-18 March 2004, 213. https://doi.org/10.1117/12.544212 http://proceedings.spiedigitallibrary.org/proceeding.aspx?doi=10.1117/12.544212 |
| [2] | Barbarino, S., Bilgen, O., Ajaj, R.M., Friswell, M.I. and Inman, D.J. (2011) A Review of Morphing Aircraft. Journal of Intelligent Material Systems and Structures, 22, 823-877. https://doi.org/10.1177/1045389x11414084 |
| [3] | Satti, R., Li, Y., Shock, R. and Noelting, S. (2008) Computational Aeroacoustic Analysis of a High-Lift Configuration. 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, 7-10 January 2008, 1-13. https://doi.org/10.2514/6.2008-34 https://arc.aiaa.org/doi/10.2514/6.2008-34 |
| [4] | Thill, C., Etches, J.A., Bond, I.P., et al. (2007) Corrugated Composite Structures for Aircraft Morphing Skin Applications. 18th International Conference on Adaptive Structures and Technologies, ICAST 2007. Ottawa, 3-5 October 2007, 210-223. |
| [5] | Yokozeki, T., Takeda, S., Ogasawara, T. and Ishikawa, T. (2006) Mechanical Properties of Corrugated Composites for Candidate Materials of Flexible Wing Structures. Composites Part A: Applied Science and Manufacturing, 37, 1578-1586. https://doi.org/10.1016/j.compositesa.2005.10.015 |
| [6] | Thill, C., Etches, J.A., Bond, I.P., Potter, K.D. and Weaver, P.M. (2010) Composite Corrugated Structures for Morphing Wing Skin Applications. Smart Materials and Structures, 19, Article 124009. https://doi.org/10.1088/0964-1726/19/12/124009 |
| [7] | Peel, L.D., Mejia, J., Narvaez, B., Thompson, K. and Lingala, M. (2009) Development of a Simple Morphing Wing Using Elastomeric Composites as Skins and Actuators. Journal of Mechanical Design, 131, Article 091003. https://doi.org/10.1115/1.3159043 |
| [8] | Long, J.H., Hale, M.E., Mchenry, M.J. and Westneat, M.W. (1996) Functions of Fish Skin: Flexural Stiffness and Steady Swimming of Longnose Gar Lepisosteus Osseus. Journal of Experimental Biology, 199, 2139-2151. https://doi.org/10.1242/jeb.199.10.2139 |
| [9] | Reed, Jr., J.L., Hemmelgarn, C.D., Pelley, B.M. and Havens, E. (2005) Adaptive Wing Structures. Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies, San Diego, 7-10 March 2005, 132. https://doi.org/10.1117/12.599922 |
| [10] | Gross, K. (2009) Mechanical Characterization of Shape Memory Polymers to Assess Candi-Dacy as Morphing Aircraft Skin. https://www.semanticscholar.org/paper/MECHANICAL-CHARACTERIZATION-OF-SHAPE-MEMORY-TO-AS-Gross/77d173d31b1e8aa714bbdf55c8243d0530a26415 |
| [11] | Keihl, M.M., Bortolin, R.S., Sanders, B., Joshi, S. and Tidwell, Z. (2005) Mechanical Properties of Shape Memory Polymers for Morphing Aircraft Applications. Smart Structures and Materials 2005: Industrial and Commercial Applications of Smart Structures Technologies, San Diego, 7-10 March 2005, 143. https://doi.org/10.1117/12.600569 |
| [12] | 尹维龙, 孙启健, 张波, 等. 形状记忆聚合物在可变形飞行器上的应用[C/OL]//中国力学学会. 第十五届全国复合材料学术会议论文集(下册). 2008. https://kns.cnki.net/kcms2/article/abstract?v=4HX-653LtvLlMWsutYoQyVdnGNjeK1mPX1_WksldOwNEpQbh5wRZ9Vt-HCRELjyOGxQw2Pp10rcn3oUmJaWHX6g_EyVFh8SQ5PJZRm47uavJ-2wh96UxzEYyxYGPzjk2ro2JZcu0vknN6Ivk3KxzLw==&uniplatform=NZKPT&language=CHS, 2024-07-05. |
| [13] | Flanagan, J., Strutzenberg, R., Myers, R. and Rodrian, J. (2007) Development and Flight Testing of a Morphing Aircraft, the Nextgen Mfx-1. 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, 23-26 April 2007, 1-3. https://doi.org/10.2514/6.2007-1707 |
| [14] | Andersen, G., Cowan, D. and Piatak, D. (2007) Aeroelastic Modeling, Analysis and Testing of a Morphing Wing Structure. 48th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, 23-26 April 2007, 1-15. https://doi.org/10.2514/6.2007-1734 |
| [15] | Messina, A. and Soldatos, K.P. (1999) Vibration of Completely Free Composite Plates and Cylindrical Shell Panels by a Higher-Order Theory. International Journal of Mechanical Sciences, 41, 891-918. https://doi.org/10.1016/s0020-7403(98)00069-1 |
| [16] | Ye, T., Jin, G., Chen, Y. and Shi, S. (2014) A Unified Formulation for Vibration Analysis of Open Shells with Arbitrary Boundary Conditions. International Journal of Mechanical Sciences, 81, 42-59. https://doi.org/10.1016/j.ijmecsci.2014.02.002 |
| [17] | Wang, Q., Shi, D., Pang, F. and e Ahad, F. (2017) Benchmark Solution for Free Vibration of Thick Open Cylindrical Shells on Pasternak Foundation with General Boundary Conditions. Meccanica, 52, 457-482. https://doi.org/10.1007/s11012-016-0406-2 |
| [18] | Qin, Z., Chu, F. and Zu, J. (2017) Free Vibrations of Cylindrical Shells with Arbitrary Boundary Conditions: A Comparison Study. International Journal of Mechanical Sciences, 133, 91-99. https://doi.org/10.1016/j.ijmecsci.2017.08.012 |
| [19] | Chen, Z., Qin, B., Wang, Q., Zhong, R. and Wang, A. (2022) Vibration Analysis of Laminated Open Cylindrical Shell Coupled with Rectangular Plates. Composite Structures, 292, Article 115607. https://doi.org/10.1016/j.compstruct.2022.115607 |
| [20] | Jeyaraj, P., Ganesan, N. and Padmanabhan, C. (2009) Vibration and Acoustic Response of a Composite Plate with Inherent Material Damping in a Thermal Environment. Journal of Sound and Vibration, 320, 322-338. https://doi.org/10.1016/j.jsv.2008.08.013 |
| [21] | Fazzolari, F.A. and Carrera, E. (2013) Free Vibration Analysis of Sandwich Plates with Anisotropic Face Sheets in Thermal Environment by Using the Hierarchical Trigonometric Ritz Formulation. Composites Part B: Engineering, 50, 67-81. https://doi.org/10.1016/j.compositesb.2013.01.020 |
| [22] | Li, Z., Zhong, R., Wang, Q., Qin, B. and Yu, H. (2020) The Thermal Vibration Characteristics of the Functionally Graded Porous Stepped Cylindrical Shell by Using Characteristic Orthogonal Polynomials. International Journal of Mechanical Sciences, 182, Article 105779. https://doi.org/10.1016/j.ijmecsci.2020.105779 |
