Application of the finite-element method and the eigenmode expansion method to investigate the periodic and spectral characteristic of discrete phase-shift fiber Bragg grating

2017 ◽  
Vol 56 (11) ◽  
pp. 1
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Phase Shift ◽  
Spectral Characteristic ◽  
Fiber Bragg Grating ◽  
Expansion Method ◽  
Bragg Grating ◽  
The Finite Element Method ◽  
Eigenmode Expansion ◽  
Discrete Phase

Generalized Polynomial Expansion Method for the Dynamic Analysis of Rotor-Bearing Systems

1991 ◽  
Author(s):  
Ting Nung Shiau ◽  
Jon Li Hwang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Expansion Method ◽  
Polynomial Expansion ◽  
The Finite Element Method ◽  
Rotor Systems ◽  
Generalized Polynomial ◽  
Rotor Bearing ◽  
Polynomial Expansion Method ◽  
Element Method

The determination of critical speeds and modes and the unbalance response of rotor-bearing systems is investigated with the application of a technique called the generalized polynomial expansion method (GPEM). This method can be applied to both linear and nonlinear rotor systems, however, only linear systems are addressed in this paper. Three examples including single spool and dual rotor systems are used to demonstrate the efficiency and the accuracy of this method. The results indicate a very good agreement between the present method and the finite element method (FEM). In addition, computing time will be saved using this method in comparison with the finite element method.

Generalized Polynomial Expansion Method for the Dynamic Analysis of Rotor-Bearing Systems

1993 ◽  
Vol 115 (2) ◽  
pp. 209-217 ◽  
Author(s):  
T. N. Shiau ◽  
J. L. Hwang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Expansion Method ◽  
Polynomial Expansion ◽  
The Finite Element Method ◽  
Rotor Systems ◽  
Generalized Polynomial ◽  
Rotor Bearing ◽  
Polynomial Expansion Method ◽  
Element Method

The determination of critical speeds and modes and the unbalance response of rotor-bearing systems is investigated with the application of a technique called the generalized polynomial expansion method (GPEM). This method can be applied to both linear and nonlinear rotor systems; however, only linear systems are addressed in this paper. Three examples including single spool and dual rotor systems are used to demonstrate the efficiency and the accuracy of this method. The results indicate a very good agreement between the present method and the finite element method (FEM). In addition, computing time will be saved using this method in comparison with the finite element method.

scholarly journals Analyses of Composite Structures Behaviour with Embedded Bragg Grating Sensors

2006 ◽  
Vol 514-516 ◽  
pp. 614-618
Author(s):  
Carlos A. Ramos ◽  
José Luís Esteves ◽  
Rui A. Silva ◽  
António Torres Marques
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Health Monitoring ◽  
Composite Structures ◽  
Composite Laminate ◽  
Carbon Composite ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
The Finite Element Method

Structural health monitoring of composite structures may be accomplished by measuring strains with embedded optical fibre sensors. In this paper, we present the performance of Bragg grating sensors, which are embedded into a carbon composite laminate and them bonded to the structure in analyse. The paper will briefly discuss the results and compare them with a free fibre Bragg grating bonded in the surface of the carbon composite laminate, with existing electrical strain gauge installation and with a numerical analysis by the finite element method.

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