VIBRATION REDUCTION IN AN ARTICULATED ROTOR BLADE USING STRUCTURAL OPTIMIZATION

1992 ◽  
Vol 19 (1) ◽  
pp. 37-50 ◽  
Author(s):  
ADITI CHATTOPADHYAY
Keyword(s):  
Structural Optimization ◽  
Rotor Blade ◽  
Vibration Reduction

Structural Optimization of Tractor Frame for Noise and Vibration Reduction

1999 ◽  
Author(s):  
Nobutaka Tsujiuchi ◽  
Takayuki Koizumi ◽  
Isamu Kubomoto ◽  
Eiichi Ishida
Keyword(s):  
Structural Optimization ◽  
Vibration Reduction ◽  
Noise And Vibration ◽  
Noise And Vibration Reduction

Surrogate based design optimisation of composite aerofoil cross-section for helicopter vibration reduction

2012 ◽  
Vol 116 (1181) ◽  
pp. 709-725 ◽  
Author(s):  
M. S. Murugan ◽  
R. Ganguli ◽  
D. Harursampath
Keyword(s):  
Objective Function ◽  
Cross Section ◽  
Rotor Blade ◽  
Vibration Reduction ◽  
Substantial Reduction ◽  
Response Surfaces ◽  
Design Optimisation ◽  
Baseline Design ◽  
Real Coded Genetic Algorithm ◽  
Helicopter Vibration

AbstractDesign optimisation of a helicopter rotor blade is performed. The objective is to reduce helicopter vibration and constraints are put on frequencies and aeroelastic stability. The ply angles of the D-spar and skin of the composite rotor blade with NACA 0015 aerofoil section are considered as design variables. Polynomial response surfaces and space filling experimental designs are used to generate surrogate models of the objective function with respect to cross-section properties. The stacking sequence corresponding to the optimal cross-section is found using a real-coded genetic algorithm. Ply angle discretisation of 1°, 15°, 30° and 45° are used. The mean value of the objective function is used to find the optimal blade designs and the resulting designs are tested for variance. The optimal designs show a vibration reduction of 26% to 33% from the baseline design. A substantial reduction in vibration and an aeroelastically stable blade is obtained even after accounting for composite material uncertainty.

Optimizing tuning masses for helicopter rotor blade vibration reduction and comparison with test data

1993 ◽  
Vol 30 (6) ◽  
pp. 906-910 ◽  
Author(s):  
Jocelyn I. Pritchard ◽  
Howard M. Adelman ◽  
Joanne L. Walsh ◽  
Matthew L. Wilbur
Keyword(s):  
Test Data ◽  
Rotor Blade ◽  
Vibration Reduction ◽  
Helicopter Rotor ◽  
Blade Vibration ◽  
Helicopter Rotor Blade
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