Table of Contents

PendulumDamper coming soon

https://bladednextgen.dnv.com/schema/0.4.1/Components/Damper/PendulumDamper.json

Not supported yet

A "pendulum" or "tuned mass" damper, which uses a suspended mass to damp oscillations in a tower.

  • ComponentType: string = PendulumDamper
  • Length: number (m)
  • Mass: number (kg)
  • Inertia: number (kgrad²)
  • Stiffness: number (Nm/rad)
  • Damping: number (Nms/rad)
  • InitialAngle: number (rad)
  • ConstantFriction: number (Nm)
  • AngleVsStiffnessTorque: array[object (AngleVsStiffnessTorque)]
  • VelocityVsDampingTorque: array[object (VelocityVsDampingTorque)]
  • MountingPosition: object (PendulumDamperMountingPosition)

A type of Component

Properties

ComponentType: stringcoming soon

Defines the specific type of Component model in use. For a PendulumDamper object, this must always be set to a value of PendulumDamper.

Length: number (m)coming soon

The length of the (rigid) pendulum arm.

Mass: number (kg)coming soon

The mass suspended at the end of the pendulum arm.

Inertia: number (kgrad²)coming soon

Any added inertia for the pendulum.

Stiffness: number (Nm/rad), optionalcoming soon

The constant stiffness term for the hinge of the pendulum. This is in addition to the non-linear terms defined in the AngleVsStiffnessTorque parameter.

Damping: number (Nms/rad), optionalcoming soon

The constant damping term for the hinge of the pendulum. This is in addition to the non-linear terms defined in the VelocityVsDampingTorque parameter.

InitialAngle: number (rad), optionalcoming soon

The initial angle of the pendulum at the beginning of the simulation.

ConstantFriction: number (Nm), optionalcoming soon

The constant friction torque applied to rotational hinge. Any other friction contributions will be in addition to this.

AngleVsStiffnessTorque: array[ object (AngleVsStiffnessTorque) ]coming soon

A look-up table of additional stiffnesses that vary with the pendulum's position.

VelocityVsDampingTorque: array[ object (VelocityVsDampingTorque) ]coming soon

A look-up table of additional damping that vary with the pendulum's velocity.

MountingPosition: object(PendulumDamperMountingPosition)coming soon

The offset of the pendulum damper from it's attachment point, in the component's axis system.