Nomenclature

Opt-2

Opt-2-d

Stacking angle

[45˚/−60˚/−60˚/60˚/45˚/60˚/−60˚/60˚

/0˚/0˚/0˚/30˚/−30˚/90˚/−60˚/45˚]

[90˚/90˚/−45˚/90˚/90˚/60˚/−60˚/

−60˚/0˚/0˚/0˚/45˚/−60˚/45˚/60˚/45˚]

Objective function

1.2454

1.2376

Deformation

2.7 mm

2.6 mm

Damping thickness

0.127 mm

0.868 mm

Natural Frequency

667.9

648.1