Beam Properties: Spring-Damper

Description

Used for the definition of spring-damper properties.

Common Toolbar

See Properties: Common Controls.

Material Tab

Spring Stiffness

• Axial

  Stiffness in the axial direction of the spring.

  Units are Force/Length (e.g., N/mm, lbf/in).

• Lateral

  Stiffness in any direction perpendicular to the axis of the spring.

  Units are Force/Length (e.g., N/mm, lbf/in).

• Torsion

  Rotational stiffness about the axis of the spring.

  Units are Force×Length/Angle (e.g., N·mm/rad, lbf·in/rad).

Damper

• Axial

  Viscous damping in the axial direction of the damper.

  Units are Force×Time/Length (e.g., N·s/mm, lbf·s/in)

• Lateral

  Viscous damping in any direction perpendicular to the axis of the damper.

  Units are Force×Time/Length (e.g., N·s/mm, lbf·s/in).

• Torsion

  Viscous rotational damping about the axis of the damper.

  Units are Force×Length×Time/Angle (e.g., N·mm·s/rad, lbf·in·s/rad).

Mass

Total mass of the spring. Note that this is a mass, not a mass density.

Units are Mass (e.g., kg, lb).

Common

• Thermal Expansion
• Damping Ratio (NFA)
• Conductivity
• Specific Heat
• Effective Thermal Area

Nonlinear Tab

Axial Force vs Displacement Table (Spring)

Force vs Displacement table defining the relationship between spring axial force and relative axial displacement between the nodes.

Torque vs Angle of Twist Table (Spring)

Moment vs Rotation table defining the relationship between spring torque and relative angle of twist between the nodes.

Axial Force vs Velocity Table (Damper)

Force vs Velocity table defining the relationship between damper axial force and relative axial velocity between the nodes.

Common

• Temperature / Time
• Material
• Hardening

Tables Tab

• Stiffness vs Temperature
• Yield vs Temperature
• Thermal Expansion vs Temperature
• Conductivity vs Temperature
• Specific Heat vs Temperature
• Stiffness vs Time
• Conductivity vs Time

See Also

• Beam Elements: Element Types