Nomenclature

Opt-1

Opt-1-d

Stacking angle

[−60˚/−45˚/60˚/−60˚/60˚/−45˚/60˚/−60˚

/0˚/0˚/−45˚/0˚/0˚/30˚/−60˚/45˚]

[45˚/90˚/60˚/45˚/60˚/30˚/30˚/45˚

/0˚/0˚/30˚/30˚/−45˚/60˚/−45˚/−45˚]

Objective function

1.2581

1.2472

Deformation

3.1 mm

2.6 mm

Damping thickness

0.127 mm

0.882 mm

Natural Frequency

660.1

661.9