基于非线性压缩变换的纤维增强复合薄板非线性阻尼的时域测试方法

李晖; 牛义; 梁晓龙; 闻邦椿

doi:10.13224/j.cnki.jasp.2018.06.019

基于非线性压缩变换的纤维增强复合薄板非线性阻尼的时域测试方法

doi: 10.13224/j.cnki.jasp.2018.06.019

东北大学机械工程与自动化学院,沈阳 110819

基金项目: 国家自然科学基金(51505070，51375079)；中央高校基本科研业务费专项资金（N150304011）

计量
- 文章访问数: 750
- HTML浏览量: 97
- PDF量: 507
- 被引次数: 0
出版历程
- 收稿日期: 2016-12-02
- 刊出日期: 2018-06-28

Time-domain test method for nonlinear damping of fiber reinforced composite thin plate based on nonlinear squeezing transform

摘要

摘要: 提出了基于非线性压缩变换的纤维增强复合薄板非线性阻尼的时域测试方法。基于非线性压缩变换构造了理论分析信号,并推导获得了复合结构系统非线性阻尼的表达式,明确了从时域测试角度获取非线性阻尼参数的理论原理。编写了Matlab算法,并用数值算例证明了该算法的正确性。总结并概括出一套合理、规范的测试流程,并对TC500碳纤维/树脂基复合薄板进行了实际测试。实践证明,利用所提出的方法可以有效获得复合薄板在不同衰减时刻对应的阻尼参数,该方法可以用来定量评价不同振动幅值及频率下复合结构的非线性阻尼特性。
- 纤维增强复合薄板 /
- 非线性阻尼 /
- 时域测试 /
- 测试方法 /
- 非线性压缩变换
Abstract: A time-domain test method for nonlinear damping of fiber reinforced composite thin plate based on nonlinear squeezing transform was proposed. The analytic signal was constructed based on the nonlinear squeezing transform, and the expression of nonlinear damping of the composite structure system was derived, so that the theoretical principles of acquiring the nonlinear damping parameters from the time-domain test view could be clarified. Then, the Matlab algorithm was written and numerical example was used to prove the correctness of the algorithm. The reasonable and standard test procedures were summarized and applied to real measurement of TC500 carbon fiber/resin composite thin plate. It was proved that the proposed method can effectively obtain its damping parameters in different decay time, thus it can be used to quantitatively evaluate nonlinear damping characteristic of composite structure under different excitation amplitudes and frequencies.
- fiber reinforced composite thin plate /
- nonlinear damping /
- time-domain test /
- test method /
- nonlinear squeezing transform

HTML

参考文献(21)

[1]	VINSON J R,SIERAKOWSKI R L,BERT C W.The behavior of structures composed of composite materials［M］.Berlin：Springer,2008.
[2]	沈观林.复合材料力学［M］.北京：清华大学出版社,2006.
[3]	傅恒志.未来航空发动机材料面临的挑战与发展趋向［J］.航空材料学报,1998,18(4):52-61.FU Hengzhi.Challenge and developement trends to future aero engine materials［J］.Journal of Aeronautical Materials,1998,18(4):52-61.(in Chinese)
[4]	HASELBACH F,NEWBY A,PARKER R.Concepts & technologies for the next generation of large civil aircraft engines［R］.Petersburg,Russia:the 29th Congress of the International Council of the Aeronautical Sciences,2014.
[5]	齐红宇,温卫东,崔海涛.含孔复合材料层合板疲劳寿命预测研究［J］.航空动力学报,2003,18(5):658-661.QI Hongyu,WEN Weidong,CUI Haitao.Fatigue life predication of notched composite material laminates［J］.Journal of Aerospace Power,2003,18(5):658-661.(in Chinese)
[6]	KAW A K.Mechanics of composite materials［M］.Boca Raton:the Chemical Rubber Company Press,2005.
[7]	LEYENS C,KOCIAN F,HAUSMANN J,et al.Materials and design concepts for high performance compressor components［J］.Aerospace Science and Technology,2003,7(3):201-210.
[8]	温卫东,崔海坡,徐颖.T300/BMP-316复合材料板冲击损伤研究［J］.航空动力学报,2007,22(5):749-754.WEN Weidong,CUI Haipo,XU Ying.Research on impact damage of T300/BMP-316 composite laminates［J］.Journal of Aerospace Power,2007,22(5):749-754.(in Chinese)
[9]	SCHULTZ A B,TSAI S W.Dynamic moduli and damping ratios in fiber-reinforced composites［J］.Journal of Composite Materials,1968,2(3):368-379.
[10]	SUAREZ S A,GIBSON R F,DEOBALDL R.Random and impulse techniques for measurement of damping in composite materials［J］.Experimental Techniques,1984,8(10):19-24.
[11]	CRANE R M,GILLESPIE J W.Characterization of the vibration damping loss factor of glass and graphite fiber composites［J］.Composites Science and Technology,1991,40(4):355-375.
[12]	WOLFENDEN A,WOLLA J M.Mechanical damping and dynamic modulus measurements in alumina and tungsten fibre-reinforced aluminium composites［J］.Journal of Materials Science,1989,24(9):3205-3212.
[13]	HADI A S,ASHTON J N.Measurement and theoretical modelling of the damping properties of a uni-directional glass/epoxy composite［J］.Composite Structures,1996,34(4):381-385.
[14]	KINRA V K,RAY S,ZHU C,et al.Measurement of nonlinear damping in a Gr/Al metal-matrix composite［J］.Experimental Mechanics,1997,37(1):5-10.
[15]	QIAN Guanliang,HOA S V,XIAO Xinran.A vibration method for measuring mechanical properties of composite,theory and experiment［J］.Composite Structures,1997,39(1/2):31-38.
[16]	黎大志,陈树年.复合材料阻尼测试方法及空气阻尼影响的探讨［J］.振动与冲击,1992(1/2):128-131.LI Dazhi,CHEN shunian.Study on the damping test method and the influence of air damping of the composite materials［J］.Journal of Aerospace Power,1992(1-2):128-131.(in Chinese)
[17]	李明俊,黎鹏平,徐泳文,等.不同边界条件和应变振幅对各向异性层合阻尼结构内耗的影响［J］.复合材料学报,2007,24(5):66-71.LI Mingjun,LI Pengping,XU Yongwen,et al.Influence of different boundary conditions and strain amplitudes on the structural internal friction of anisotropic laminated damped structures［J］.Journal of Composite Materials,2007,24(5):66-71.(in Chinese)
[18]	杨云昭,易凯,王建月,等.国产碳纤维增强树脂基复合材料阻尼性能实验研究［J］.强度与环境,2014,41(6):402-428.YANG Yunzhao,YI Kai,WANG Jianyue,et al.Experimental investigation of damping performance of domestic carbon fiber reinforced composite materials［J］.Structureand Environment Engineering,2014,41(6):402-428.(in Chinese)
[19]	CHEN J E,ZHANG W,GUO X Y,et al.Theoretical and experimental studies on nonlinear oscillations of symmetric cross-ply composite laminated plates［J］.Nonlinear Dynamics,2013,73(3):1697-1714.
[20]	WANG Shibin,CHEN Xuefeng,WANG Yan,et al.Nonlinear squeezing time-frequency transform for weak signal detection［J］.Signal Processing,2015,113(10):195-210.
[21]	胡广书.现代信号处理教程［M］.北京:清华大学出版社,2015:54-56.