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Command reference help topics

MASS21 dialog box (ANSYS)

Physical Property Table
Name Defines the name of the physical property table.
Label Specifies a unique numerical identifier for the physical property table.
Properties
Distribute Mass Controls whether Nastran treats elements that are assigned this physical property table as plane strain elements.
MASS21 Real Constants
Mass Lets you specify the element's mass as a single value that acts in all appropriate coordinate directions.
Mass Component X, Mass Component Y, Mass Component Z Specifies the concentrated mass components in the X, Y, and Z directions for the element.
Mass Moment of Inertia, Ixx, Mass Moment of Inertia, Iyy, Mass Moment of Inertia, Izz Specifies the rotational inertia values about the elemental coordinate system.
Coordinate system reference (KECN) Lets you specify a user-defined elemental coordinate system.Click CSYS Dialog to use the CSYS dialog box to create the coordinate system. See CSYS dialog box for more information.Click to choose a coordinate system command to create the coordinate system.
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MASS21 dialog box (ANSYS), Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1760617 · retrieved 2026-07-17