The Rotating Rectangular Thin Plate ’ s Dynamic Stress Experiment ( Single Point ’ s Frequency Research ) Xixin JIANG
نویسنده
چکیده
Utilizing optical Fiber Bragg Grating’s (FBG) characteristic of transmission optic signals in noncontact way, the measure method of the twisted, variable cross-section, variable thickness, rotating rectangular blade’s local strain has been presented. Firstly, by using the finite element method to obtain the rotating blade’s natural frequency, modal shape and strain modal shape, the mounting location of the FBG on the rotating blade is determined; secondly, using optical fiber non-contact transmission device, the rotating blade’s dynamic strain in different locations can be measured by FBG. In this paper, the author only analyzed the frequency, amplitude and the dynamic stiffening phenomenon of dynamic strain at one point in rotating state. Finally, the author points out that this method can effectively measure rotating blade’s dynamic strain and dynamic response, by result analysis, roatating blade worth further researching. Copyright © 2013 IFSA.
منابع مشابه
Damping and Frequency Shift in Microscale Modified Couple Stress Thermoelastic Plate Resonators
In this paper, the vibrations of thin plate in modified couple stress thermoelastic medium by using Kirchhoff- Love plate theory has been investigated. The governing equations of motion and heat conduction equation for Lord Shulman (L-S) [1] theory are written with the help of Kirchhoff- Love plate theory. The thermoelastic damping of micro-beam resonators is analyzed by using the normal mode a...
متن کاملEffect of Length-scale Parameter on Pull-in Voltage and Natural Frequency of a Micro-plate
This paper deals with the effect of the intrinsic material length-scale parameter on the stability and natural frequency of a rectangular micro-plate for two different cases; fully clamped and fully simply supported. A variational formulation based on Hamilton’s principle and the modified couple stress theory is used to obtain the nonlinear governing equation of a micro-plate incorporating the ...
متن کاملEffects of Geometric Nonlinearity on Stress Analysis in Large Amplitude Vibration of thin Circular Functionally Graded Plates With Rigid Core
Abstract In this paper , the nonlinear the nonlinear free and forced axisymmetric vibration of a thin circular functionally graded plate with rigid core is formulated in terms of von-Karman’s dynamic equation , and a semi-analytical approach is developed.Functionally graded material (FGM) properties vary through the thickness of the plate.FGM s are spatial composites within which material prop...
متن کاملAnalytical predictions for the buckling of a nanoplate subjected to non-uniform compression based on the four-variable plate theory
In the present study, the buckling analysis of the rectangular nanoplate under biaxial non-uniform compression using the modified couple stress continuum theory with various boundary conditions has been considered. The simplified first order shear deformation theory (S-FSDT) has been employed and the governing differential equations have been obtained using the Hamilton’s principle. An analytic...
متن کاملValidation of Shell Theory for Modeling the Radial Breathing Mode of a Single-Walled Carbon Nanotube (RESEARCH NOTE)
In this paper, the radial breathing mode (RBM) frequency of single-walled carbon nanotube (SWCNT) is studied based on the thin shell theory. For this purpose, SWCNT is considered as an elastic thin cylindrical shell. The dynamic equation of RBM is derived using the Hamilton’s principle. An analytical solution of the RBM frequency of SWCNT is obtained. The advantage of this formulation is that i...
متن کامل