基于动刚度法的热环境下纤维增强聚合物基复合薄板抗振性能的退化
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摘要
从动力学角度,提出了动刚度法来研究热环境下纤维增强聚合物基复合薄板的抗振性能退化特性。首先,考虑脉冲激励载荷的影响,利用能量法、板壳理论和振型叠加法等,实现了热环境下动刚度的理论求解。同时,总结和归纳了热环境下复合薄板抗振性能退化的分析流程,并以TC500碳纤维/树脂基复合薄板为例,通过对比理论与测试获得的动刚度、固有频率、阻尼和振型结果,证明了该动态指标的有效性和方法的可行性,可以利用该指标来量化评价复合薄板在热环境下的动态性能退化问题。
From the viewpoint of dynamics,dynamic stiffness method was proposed to study the vibration-resistant performance degradation properties of fiber-reinforced composite thin plate in thermal environment.Firstly,with the consideration of the effect of pulse excitation load,the dynamic stiffness values in thermal environment were solved by using the principle of energy method,plate and shell theory and modal shape superposition method.Meanwhile,the analysis process of vibration-resistant performance degradation of composite thin plate in high-temperature environment was summarized.In addition,a TC500 fiber/epoxy composite plate was taken as a study object,and through the comparison of dynamic stiffness,natural frequency,damping and modal shape results were obtained by the theoretical calculation and experimental test.The feasibility of the proposed method and the reliability of such a dynamic index have been verified,which can be used to quantitatively evaluate the dynamic performance degradation of composite thin plate in thermal environment.
From the viewpoint of dynamics,dynamic stiffness method was proposed to study the vibration-resistant performance degradation properties of fiber-reinforced composite thin plate in thermal environment.Firstly,with the consideration of the effect of pulse excitation load,the dynamic stiffness values in thermal environment were solved by using the principle of energy method,plate and shell theory and modal shape superposition method.Meanwhile,the analysis process of vibration-resistant performance degradation of composite thin plate in high-temperature environment was summarized.In addition,a TC500 fiber/epoxy composite plate was taken as a study object,and through the comparison of dynamic stiffness,natural frequency,damping and modal shape results were obtained by the theoretical calculation and experimental test.The feasibility of the proposed method and the reliability of such a dynamic index have been verified,which can be used to quantitatively evaluate the dynamic performance degradation of composite thin plate in thermal environment.
引文
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[16]刘娟.含孔隙CFRP层合板的湿热老化与力学性能退化[D].哈尔滨:哈尔滨工业大学,2014.LIU J.Hydrothermal aging and the deterioration of mechanical properties of CFRP laminates with voids[D].Harbin:Harbin Institute of Technology,2014(in Chinese).
[17]樊威,李嘉禄.热氧老化对碳纤维织物增强聚合物基复合材料弯曲性能的影响[J].复合材料学报,2015,32(5):1260-1270.FAN W,LI J L.Effects of thermo-oxidative aging on flexural properties of carbon fiber fabric reinforced polymer matrix composites[J].Acta Materiae Compositae Sinica,2015,32(5):1260-1270(in Chinese).
[18]刘新,武湛君,何辉永,等.超低温介质对碳纤维增强树脂基复合材料力学性能的影响[J].复合材料学报,2017,34(9):1944-1952.LIU X,WU Z J,HE H Y,et al.Influence of cryogenic mediums on mechanical properties of carbon fiber reinforced epoxy resin[J].Acta Materiae Compositae Sinica,2017,34(9):1944-1952(in Chinese).
[19] WHITNEY J M,ASHTON J E.Effect of environment on the elastic response of layered composite plates[J].AIAA Journal,1971,9(9):1708-1713.
[20]常永乐,李晖,杨雪峰,等.纤维增强聚合物基复合薄板非线性振动测试平台开发及应用[J].中国工程机械学报,2017,15(2):147-152.CHANG Y L,LI H,YANG X F,et al.Development and application of nonlinear vibration testing platform for fiber reinforced composite thin plate[J].Chinese Journal of Construction Machinery,2017,15(2):147-152(in Chinese).
[2] JONES R M.Mechanics of composite materials[M].Washington:Scripta Book Company,1975.
[3]王荇卫,蔡慧莲,王寿梅.复合材料桨叶振动特性分析的一种新方法[J].航空学报,1992,13(9):516-521.WANG X W,CAI H L,WANG S M.A new approach to analyzing the vibration characteristics of composite blades[J].Acta Aeronautica et Astronautica Sinica,1992,13(9):516-521(in Chinese).
[4]何连珠,赵沛霖.复合材料构件发射导弹的动响应分析[J].航空学报,1992,13(8):448-451.HE L Z,ZHANG P L.Dynamic response analysis of composite structure during launching missile[J].Acta Aeronautica et Astronautica Sinica,1992,13(8):448-451(in Chinese).
[5]王慧杰.航空复合材料树脂基体的现状及发展[J].复合材料学报,1995,12(4):35-38.WANG H J.Present state and future development of resin matrix in aircraft composite materials[J].Acta Materiae Compositae Sinica,1995,12(4):35-38(in Chinese).
[6]姚起杭,姚军.工程结构的振动疲劳问题[J].应用力学学报,2006,23(1):12-15.YAO Q H,YAO J.Vibration fatigue in engineering structures[J].Chinese Journal of Applied Mechanics,2006,23(1):12-15(in Chinese).
[7]程昊,李海波,靳荣华,等.高超声速飞行器结构热模态试验国外进展[J].强度与环境,2012,39(3):52-59.CHENG H,LI H B,JIN R H,et al.The review of the high temperature modal test for the hypersonic vehicle[J].Structure&Environment Engineering,2012,39(3):52-59(in Chinese).
[8] REDDY J N.Theory and analysis of elastic plates and shells[M].Florida:CRC Press,2004.
[9]梁军,杜善义.防热复合材料高温力学性能[J].复合材料学报,2004,21(1):73-77.LIANG J,DU S Y.Investigation of the thermo-mechanical properties of thermal protective composites under high temperature[J].Acta Materiae Compositae Sinica,2004,21(1):73-77(in Chinese).
[10] TORRE L,KENNY J M,BOGHETICH G,et al.Degradation behaviour of a composite material for thermal protection systems:Part III—Char characterization[J].Journal of Materials Science,2000,35(18):4563-4566.
[11] CHUNG K,SEFERIS J C,NAM J D.Investigation of thermal degradation behavior of polymeric composites:Prediction of thermal cycling effect from isothermal data[J].Composites Part A,2000,31(9):945-957.
[12]雷文,许驰,王考将.加速热老化对苎麻纤维/聚丙烯复合材料性能的影响[J].南京林业大学学报(自然科学版),2009,33(5):89-94.LEI W,XU C,WANG K J.Effects of accelerated thermal aging on properties of ramie fibre/polypropylene composites[J].Journal of Nanjing Forestry University(Natural Science Edition),2009,33(5):89-94(in Chinese).
[13] WOLFRUM J,EIBL S,LIETCH L.Rapid evaluation of long-term thermal degradation of carbon fibre epoxy composites[J].Composites Science&Technology,2009,69(3-4):523-530.
[14] ZHU H G,LEUNG C K Y,KIM J K,et al.Degradation of glass fiber-reinforced plastic composites containing nanoclay in alkaline environment[J].Journal of Composite Materials,2011,45(21):2147-2156.
[15] UPADHYAYA P,SINGH S,ROY S.A mechanism-based multi-scale model for predicting thermo-oxidative degradation in high temperature polymer matrix composites[J].Composites Science&Technology,2011,71(10):1309-1315.
[16]刘娟.含孔隙CFRP层合板的湿热老化与力学性能退化[D].哈尔滨:哈尔滨工业大学,2014.LIU J.Hydrothermal aging and the deterioration of mechanical properties of CFRP laminates with voids[D].Harbin:Harbin Institute of Technology,2014(in Chinese).
[17]樊威,李嘉禄.热氧老化对碳纤维织物增强聚合物基复合材料弯曲性能的影响[J].复合材料学报,2015,32(5):1260-1270.FAN W,LI J L.Effects of thermo-oxidative aging on flexural properties of carbon fiber fabric reinforced polymer matrix composites[J].Acta Materiae Compositae Sinica,2015,32(5):1260-1270(in Chinese).
[18]刘新,武湛君,何辉永,等.超低温介质对碳纤维增强树脂基复合材料力学性能的影响[J].复合材料学报,2017,34(9):1944-1952.LIU X,WU Z J,HE H Y,et al.Influence of cryogenic mediums on mechanical properties of carbon fiber reinforced epoxy resin[J].Acta Materiae Compositae Sinica,2017,34(9):1944-1952(in Chinese).
[19] WHITNEY J M,ASHTON J E.Effect of environment on the elastic response of layered composite plates[J].AIAA Journal,1971,9(9):1708-1713.
[20]常永乐,李晖,杨雪峰,等.纤维增强聚合物基复合薄板非线性振动测试平台开发及应用[J].中国工程机械学报,2017,15(2):147-152.CHANG Y L,LI H,YANG X F,et al.Development and application of nonlinear vibration testing platform for fiber reinforced composite thin plate[J].Chinese Journal of Construction Machinery,2017,15(2):147-152(in Chinese).
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