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PARAM, UCORD

PARAM, UCORD

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PARAM, UCORD

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Parameter

Values

Description

UCORD

<CID>

Integer ≥ -1

Default = -1

If = -1, the mass moment of inertia is calculated about the center of gravity and is output in the basic coordinate system.

If = 0, the mass moment of inertia is calculated about the origin of the basic coordinate system. The output values are expressed in the basic coordinate system.

If ≥ 0, the center of gravity coordinates are expressed in the coordinate system CID. The mass moment of inertia is calculated about the center of gravity and expressed in the coordinate system CID.

Note:

1.If PARAM, UCORD is not specified, CID = -1, or CID given is not found, all values in PARAM, GRDPNT are calculated relative to the basic coordinate system.
2.If PARAM, GRDPNT is not specified in the input deck, then the center of gravity and moment of inertia are not output regardless of the value of PARAM, UCORD.
3.The values of PARAM, GRDPNT and PARAM, UCORD do not affect the output of Center of Gravity and Mass Moment of Inertia output via OUTPUT, MASSPROP.