Mass and inertia tensor of solid mass
The Inertia block adds the inertial properties
of a point or distributed mass to the attached frame. The inertia
type depends on the parameterization selected. A
Mass parameterization enables you to model a concentrated
mass with no rotational inertia. A
enables you to model a distributed mass with the specified moments
and products of inertia. An inertia icon identifies the inertia location
in the Mechanics Explorer visualization pane.
R— Reference frame
Local reference frame of the inertia element. Connect to a frame line or frame port to define the relative position and orientation of the inertia.
Type— Inertia parameterization to use
Inertia parameterization to use. Select
Point Mass to
represent a mass with no rotational inertia. Select
represent a distributed mass with rotational inertia.
Mass— Aggregate mass of the solid
Aggregate mass of the solid. The mass can be a positive or negative value. Specify a negative mass to model the aggregate effect of voids and cavities in a compound body.
Custom: Center of Mass— Center-of-mass coordinates
[x y z] coordinates of the center of mass relative to the block reference frame. The center of mass coincides with the center of gravity in uniform gravitational fields only.
Custom: Moments of Inertia— Diagonal elements of inertia tensor
Three-element vector with the [Ixx Iyy Izz] moments of inertia specified relative to a frame with origin at the center of mass and axes parallel to the block reference frame. The moments of inertia are the diagonal elements of the inertia tensor
Custom: Products of Inertia— Off-diagonal elements of inertia tensor
Three-element vector with the [Iyz Izx Ixy] products of inertia specified relative to a frame with origin at the center of mass and axes parallel to the block reference frame. The products of inertia are the off-diagonal elements of the inertia tensor