Nomenclature

Opt-4

Opt-4-d

Stacking angle

[30˚/−30˚/−60˚/30˚/−30˚/−30˚/60˚/−45˚

/0˚/0˚/0˚/0˚/90˚/−30˚/45˚/45˚]

[−30˚/30˚/60˚/−45˚/30˚/−60˚/90˚/0˚

/90˚/0˚/0˚/0˚/−45˚/−45˚/−45˚/30˚]

Objective function

1.3792

1.3264

Deformation

3.3 mm

2.9 mm

Damping thickness

0.127 mm

0.822 mm

Natural Frequency

794.9

797.9