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NONSTRUCTURAL MASS

14.13

NONSTRUCTURAL MASS: Specify mass contribution to the model from

nonstructural features.

This option is used to include the mass contribution from nonstructural features in the model. The

nonstructural m ass can be applied over an element set that contains solid, shell, m embrane, surface, beam ,

or truss elements.

Products: ABAQUS/Standard ABAQUS/Explicit

Type: Model data

Level: Part, Part instance, Assembly

Reference:

•

“Nonstructural mass deﬁnition,” Section 2.6.1 of the ABAQUS Analysis User’s Manual

Required parameters:

ELSET

Set this parameter equal to the name of the ele ment set containing the elements over which a given

nonstructural mass is to be distributed.

UNITS

Set UNITS=TOTAL MASS to specify the nonstructural mass in the units of “mass.”

Set U NITS=MASS PER VOLUME to specify the nonstructural mass in the units of “mass per

unit volume.”

Set UNITS=MASS PER AREA to specify the nonstructural mass in the units of “mass per

unit area.” This value is valid only for an element set that contains conventional shells, membranes,

and/or surface elements.

Set UNITS=MASS PER LENGTH to specify the nonstructural mass in the units of “mass per

unit length.” This value is valid only for an element set that contains beam and/or truss elements.

Optional parameter:

DISTRIBUTION

This parameter is relevant only when UNITS=TOTAL MASS.

Set DISTRIBUTION=MASS PROPORTIONAL (default) to distribute the total nonstructural

mass among the members of the element set region in proportion to the elem ent structural mass.

The underlying structural density over the element set region is scaled uniform ly; therefore, the

center of mass for the element set region is not altered.

14.13–1

ABAQUS Version 6.1 Module:

ID:

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Abaqus Volume II: I–Z Manual do Utilizador Página 215

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