为了在复合材料层合板阻尼分析中既考虑层合板厚度方向应力、应变对结构阻尼的贡献,又不增加厚度方向的单元数量,基于复合材料的有效三维阻尼矩阵预报理论,建立了新的高效复合材料结构模态阻尼的三维有限元预测方法.沿层合板厚度方向将原结构分成若干亚层,每一亚层包含若干单层.根据合成理论计算每一亚层的刚度矩阵、柔度矩阵和有效三维阻尼损耗矩阵.对亚层划分单元,进行结构的有限元模态分析.根据模态分析结果,利用有效三维阻尼矩阵求出各个模态对应的模态阻尼.利用该理论,分别计算了单向层合板、对称层合板以及厚板的结构模态阻尼.数值计算结果表明,该方法具有很好的适用性,其优点在于既考虑了板厚方向的阻尼贡献,又减少了厚度方向的单元数,提高了计算的准确性和效率.
参考文献
| [1] | Chaviaropoulos P K,Politis E S,Lekou D J,et al.Enhancing the damping or wind turbine rotor blades,the DAMPBLADE project[J].Wind Energy,2006,9(1/2):163-177. |
| [2] | Saravanos D A,Hopkins D A.Effects of delaminations on the damped dynamic characteristics of composite laminates:Analysis and experiments[J].Journal of Sound and Vibration,1996,192(5):977-993. |
| [3] | Chandra R,Singh S P,Gupta K.Damping studies in fiberreinforced composites:A review[J].Composite Structures.1999,46(1):41-51. |
| [4] | 李明俊,苏媛,孙向春,等.层合阻尼结构各向异性设计之阻尼特性分析[J].复合材料学报,2002,19(3):94-97.Li Mingjun,Su Yuan,Sun Xiangchun,et al.Anisotropic design and its damping analysis of laminated damped structure[J].Acta Materiae Compositae Sinica,2002,19(3):94-97. |
| [5] | 戴新进,林家浩,陈浩然.附面阻尼随频率变化的复合材料层合结构随机振动分析[J].复合材料学报,2006,23(1),173-179.Dai Xinjin,Lin Jiahao,Chen Haoran.Random vibration analysis of the composite laminated structures attached with frequency-dependant damping layer[J].Acta Materiae Compositae Sinica,2006,23(1):173-179. |
| [6] | 杨雪,王源升,朱金华,等.多层阻尼复合结构阻尼性能[J].复合材料学报,2005,22(3),175-181.Yang Xue,Wang Yuansheng,Zhu Jinhua,et al.Damping properties of the composite structures with muhilayered damping materials[J].Acta Materiae Compositae Sinica,2005,22(3):175-181. |
| [7] | Kyriazoglou C,Guild F J.Finite element prediction of damping of composite GFRP and CFRP laminates--A hybrid formulation-vibration damping experiments and Rayleigh damping[J].Composites Science and Technology,2007,67(11/12):2643-2654. |
| [8] | Plagianakos T S,Saravanos D A.Mechanics and finite elements for the damped dynamic characteristics of curvilinear laminates and composite shell structures[J].Journal of Sound and Vibration,2003,263(2):399-414. |
| [9] | Wei Y T,Gui L J,Yang T Q Prediction of the 3-D effective damping matrix and energy dissipation of viscoelastic fiber composites[J].Composite Structures,2001,54(1):49-55. |
| [10] | Sun C T,Li S.Three-dimensional effective elastic constants for thick laminates[J].Journal of Composite Materials,1988,22(7):629-639. |
| [11] | 万志敏,马六成,谭惠丰,等.黏弹性复合材料的三维有效阻尼矩阵预报与能耗计算[J].复合材料学报,2001,18(2),118-123.Wan Zhimin,Ma Liucheng,Tan Huifeng,et al.Prediction of 3-D damp matrix and energy dissipation of viscoelastic fiber composites[J].Acta Materiae Compositae Sinica,2001,18(2):118-123. |
| [12] | Saravanos D A,Chamis C C.Mechanics of damping for fiber composite laminates including hygrothermal effects[J].AIAA Journal,1990,28(10):1813-1819. |
| [13] | Saravanos D A.Integrated damping mechanics for thick composite laminates and plates[J].Journal of Applied Mechanics,1994,61(2):375-385. |
| [14] | 张少辉,陈花玲,粱天锡.纤维增强树脂基复合材料阻尼特性的数值模拟[J].航空材料学报,2004,24(3):10-14.Zhang Shaohui,Chen Hualing,Liang Tianxi.Numerical simulation on the damping characteristic of fiber reinforced composite[J].Journal of Aeronautical Materials,2004,24(3):10-14. |
| [15] | Lin D X,Ni R G,Adams R D.Prediction and measurement of the vibrational damping parameters of carbon and glass fibrereinforced plastics plates[J].Journal of Composite Materials,1984,18(2):132-152. |
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