Application of Advanced Composites to Helicopter Structures Static

Application of Advanced Composites to Helicopter Structures Static Structural Analysis Introduction Composites respond to mechanical and hygrothermal loading in ways that are very different in metals. Due to their fibrous laminar non-isotropic structure, their extra modes of failure (usually due to the weak resin matrix) require special attention. Material allowables must consider the degrading effects of temperature, moisture, fabrication and service flaws and damage. 1

Application of Advanced Composites to Helicopter Structures Static Structural Analysis of Composite Rotor Blades 2

Application of Advanced Composites to Helicopter Structures Static Structural Analysis Independent Parts of Blade Structure 3

Application of Advanced Composites to Helicopter Structures Static Structural Analysis Spar Dimensions 4

Application of Advanced Composites to Helicopter Structures Static Structural Analysis Close Approximations Using Shape Coefficients SKINS AREA OF SOLID MANDRELS AND CORES 5

Application of Advanced Composites to Helicopter Structures Static Structural Analysis SECOND MOMENT OF AREA FOR SOLID SHAPES 6

Application of Advanced Composites to Helicopter Structures Static Structural Analysis SECOND MOMENT OF AREA OF AIRFOIL-SHAPED SHELLS 7

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 8

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 9

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 10

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 11

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 12

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 13

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 14

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 15

Application of Advanced Composites to Helicopter Structures Static Structural Analysis Two Cell Torsion Analysis 16

Application of Advanced Composites to Helicopter Structures Static Structural Analysis 17