Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Cyclic symmetric view of the composite bypass engine fan assembly 3D model analyzed

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Geometric dimensions (inches (in.) = 2.54 cm) of blade and dovetail 3D model analyzed (βH = 12.5 deg)

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Convergence of cyclic frequencies of rotating baseline composite bypass fan ([0 deg, +45 deg, 0 deg, -45 deg]s ply-orientation of 0.098 in. (0.249 cm), 0.098 in. (0.249 cm), 0.196 in. (0.498 cm), and 0.49 in. (1.245 cm) ply-thicknesses, respectively). (a) Imperfectly restrained boundary conditions.

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Dovetail (hub)-to-tip thickness distribution of the baseline composite bypass fan

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Dovetail (hub)-to-tip pretwist angle variation of the baseline composite bypass fan

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Comparison of cyclic frequency accuracy of rotating baseline composite bypass fan ([0 deg, +45 deg, 0 deg, -45 deg]s ply-orientation of 0.098 in. (0.249 cm), 0.098 in. (0.249 cm), 0.196 in. (0.498 cm), and 0.49 in. (1.245 cm) ply-thicknesses, respectively)

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Typical ANSYS finite element analysis discretization (40 × 60 × 8 grid shown) of an 8-ply baseline composite bypass fan ([0 deg, +45 deg, 0 deg, -45 deg]s ply-orientation of 0.098 in. (0.249 cm), 0.098 in. (0.249 cm), 0.196 in. (0.498 cm), and 0.49 in. (1.245 cm) ply-thicknesses, respectively)

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: Campbell diagrams of baseline fan and Newsumt-A [3] and ROS optimized 16-ply and 32-ply composite bypass fans ([0 deg, +45 deg, 0 deg2, -45 deg5]s (subscripted numbers denote ply-layers) 16-ply baseline fan orientation of 0.098 in. (0.249 cm) ply-thicknesses; [0 deg2, +45 deg2, 0 deg4, -45 deg10]s 32-ply baseline fan orientation of 0.049 in. (0.1245 cm) ply-thicknesses) (notation: “base” = baseline composite bypass fan; “opt 16-ply” = optimized 16-ply composite bypass fan; “opt 32-ply” = optimized 32-ply composite bypass fan)

Date of download: 12/23/2017 Copyright © ASME. All rights reserved. From: Three-Dimensional Tailored Vibration Response and Flutter Control of High-Bypass Shroudless Aeroengine Fans J. Vib. Acoust. 2013;135(2):021010-021010-26. doi:10.1115/1.4006758 Figure Legend: ROS and Newsumt-A [3] paths of solution convergence from baseline to global optimum fan designs