Geometrically Nonlinear Modeling and Analysis of Functionally Graded Carbon Nanotube-reinforced Composite Rectangular Plate Shells with MFCs

doi:10.3901/JME.2020.16.044

Abstract

Abstract: Vibration suppression has been a problem needs to be overcome for large-scale flexible structures in the aerospace environment. High elastic modulus, low density advantages of carbon nanotube (CNT) and large actuation forces and flexibility of micro-fiber composite (MFC) make the CNT gradient-reinforced fiber piezoelectric smart structure particularly suitable for aerospace high drop temperature environment.Based on the first order shear deformation and large rotation theory with six parameters, the nonlinear finite element modeling and analysis of the carbon nanotube-reinforced gradient composite plate with MFCs is meaningful.The geometrically nonlinear finite element model is developed for two different kinds of MFC, namely MFC-d31 and MFC-d33.First, the accuracy of the model is validated by experiment results of a piezoelectric cantilever beam and a FG-CNTRC plate. Then, The effects of the distribution form of CNT and piezo fiber angle of MFC on composite structure are verified, respectively. It is found that the distribution form of CNT has a great effect on the stiffness of shell structure, reinforcing in X shape can improve the whole stiffness much more effectively, the plate shows the lowest deflection when fiber is vertical to the reinforcement direction, different control modes make a big difference in the torsion control of the plate and shell. The simulation analysis of piezoelectric smart thin-shell structure based on large rotation theory with six parameters has great application value for shape control and vibration suppression of large flexible components in the aerospace field.

Key words: first order shear deformation-large rotation theory with six parameters, piezoelectric fiber, graded distribution, geometrically nonlinear

CLC Number:

O343

XUE Ting, QIN Xiansheng, ZHANG Shunqi, WANG Zhanxi, BAI Jing. Geometrically Nonlinear Modeling and Analysis of Functionally Graded Carbon Nanotube-reinforced Composite Rectangular Plate Shells with MFCs[J]. Journal of Mechanical Engineering, 2020, 56(16): 44-53.

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