18. Physical quantities and units

Below is a table showing the units used to express different physical quantities within AGX Dynamics for Unreal.

Quantity

Unit

Acceleration

\(cm/s^2\)

Angle

\(deg\)

Angular velocity

\(deg/s\)

Angular acceleration

\(deg/s^2\)

Cohesion

\(Pa\)

Compliance (rotational)

\(rad/Nm\)

Compliance (translational)

\(m/N\)

Damping (rotational)

\(Nms/rad\)

Damping (translational)

\(Ns/m\)

Density

\(kg/m^3\)

Electric potential

\(V\)

Electric resistance

\(Ohm\)

Force

\(N\)

Length

\(cm\)

Mass

\(kg\)

Moment of inertia

\(kg m^2\)

Pressure

\(Pa\)

Speed

\(cm/s\)

Spook Damping*

\(s\)

Stiffness (rotational)

\(Nm/rad\)

Stiffness (translational)

\(N/m\)

Torque

\(Nm\)

Young’s Modulus

\(Pa\)

Spook damping is the damping used in AGX Dynamics and is the time in seconds a constraint have to fulfill its violation.

Generally, the unit of a certain property can also be seen in the Unreal Editor in the tooltip text. This is displayed by hovering the mouse cursor over the property of interest.

Using tooltip to see the physical unit.

The physical unit can be seen in the tooltip text.