EDIPART, PART, Option, Cvect, TM, IRCS, Ivect, Vvect, CID
Defines inertia for rigid parts in an explicit dynamics analysis.
PARTPart number for which the inertia is defined (the part number
must have been previously generated using the EDPART command).
The part should be composed of a rigid material (EDMP,RIGID).
For Option = ADD, you must input a value; there
is no default. For Option = DELE or LIST, PART defaults
to all parts.
Option
ADD | — | Define inertia for the specified |
DELE | — | Delete the inertia properties
for the specified |
LIST | — | List the inertia properties for
the specified |
CvectThe vector containing the global Cartesian coordinates of
the center of mass for the part. This vector must have been previously defined
with a dimension of three (*DIM command) and filled in
as shown below. If Cvect is blank, the global Cartesian
origin (0,0,0) is used as the center of mass.
Cvect(1) -- X-coordinate of the center
of mass |
Cvect(2) -- Y-coordinate of the center
of mass |
Cvect(3) -- Z-coordinate of the center
of mass |
TMTranslation mass (no default, must be defined).
IRCSFlag for inertia tensor reference coordinate system.
0 (or blank) | — | Global inertia tensor
(default). You must supply all six inertia tensor components (see |
1 | — | Principal moments of inertia with
orientation vectors. You must supply IXX, IYY, IZZ (see |
IvectThe name of a vector containing the components of the inertia
tensor. This vector must have been previously defined (*DIM command)
with a dimension of six and filled in as shown below. Vector entries 2, 3,
and 5 are ignored if IRCS = 1. There is no default
for this vector; it must be specified.
Ivect(1) -- IXX component of the inertia
tensor |
Ivect(2) -- IXY (set this entry
to zero if IRCS = 1) |
Ivect(3) -- IXZ (set this entry
to zero if IRCS = 1) |
Ivect(4) -- IYY component of
the inertia tensor |
Ivect(5) -- IYZ (set this entry
to zero if IRCS = 1) |
Ivect(6) -- IZZ component of
the inertia tensor |
VvectThe name of a vector containing the initial velocity (relative
to the global Cartesian coordinate system) of the rigid part. This vector
must have been previously defined (*DIM command) with a
dimension of six and filled in as shown below. If Vvect is
blank, the initial velocity defaults to zero.
Vvect(1) -- Initial translational
velocity of rigid body in X-direction |
Vvect(2) -- Initial translational
velocity of rigid body in Y-direction |
Vvect(3) -- Initial translational
velocity of rigid body in Z-direction |
Vvect(4) -- Initial rotational
velocity of rigid body about the X-axis |
Vvect(5) -- Initial rotational
velocity of rigid body about the Y-axis |
Vvect(6) -- Initial rotational
velocity of rigid body about the Z-axis |
CIDLocal coordinate system ID. This coordinate system must have
been previously defined with the EDLCS command. You must
input CID if IRCS =
1 (no default).
The EDIPART command applies only to rigid parts (EDMP,RIGID). It allows you to input the inertia properties for the rigid part rather than having the program calculate the properties from the finite element mesh.
This command is also valid in Solution.
Distributed ANSYS Restriction This command is not supported in Distributed ANSYS.