Refined Structural Dynamics Model for Composite Rotor Blades

AIAA Journal ◽  
2001 ◽  
Vol 39 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Sung Nam Jung ◽  
V. T. Nagaraj ◽  
Inderjit Chopra
Keyword(s):  
Structural Dynamics ◽  
Rotor Blades ◽  
Dynamics Model

Refined structural dynamics model for composite rotor blades

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 339-348
Author(s):  
Sung N. Jung ◽  
V. T. Nagaraj ◽  
Inderjit Chopra
Keyword(s):  
Structural Dynamics ◽  
Rotor Blades ◽  
Dynamics Model

scholarly journals Feature Extraction for Structural Dynamics Model Validation

2016 ◽  
Author(s):  
Charles Farrar ◽  
Mayuko Nishio ◽  
Francois Hemez ◽  
Chris Stull ◽  
Gyuhae Park ◽  
...  
Keyword(s):  
Feature Extraction ◽  
Model Validation ◽  
Structural Dynamics ◽  
Dynamics Model

Structural Dynamics Analysis of Rotating Blades Using Fully Intrinsic Equations, Part I: Formulation and Verification of Single-Load-Path Configurations

2013 ◽  
Vol 58 (3) ◽  
pp. 1-9 ◽  
Author(s):  
Zahra Sotoudeh ◽  
Dewey H. Hodges
Keyword(s):  
Structural Dynamics ◽  
Equations Of Motion ◽  
Turbine Blades ◽  
Rotor Blades ◽  
Load Path ◽  
Dynamics Modeling ◽  
Governing Equations ◽  
Wind Turbine Blades ◽  
First Order ◽  
Infinite Degree

As part of an ongoing investigation into potential advantages of so-called fully intrinsic formulations, this paper presents an application of the fully intrinsic equations of motion and kinematics for beams to rotor blades. A fully intrinsic formulation is devoid of displacement and rotation variables. Although the governing equations are geometrically exact, they are free of the attendant singularities and infinite-degree nonlinearities found in other types of formulations. These nonlinear, first-order partial differential equations are suitable for analyzing initially curved and twisted, anisotropic beams and thus are very attractive for analysis of both helicopter and wind turbine blades. This two-part paper is devoted to the structural dynamics modeling of rotor blades with a wide variety of boundary conditions—in particular hingeless and bearingless rotor configurations. In Part I, the theory and the formulation are presented, along with verification of single-load-path configurations. Part II is devoted to the verification of dual-load-path configurations.

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