STATSUB

Subcase Information Entry

STATSUB - Subcase Selection

Description

The STATSUB command can be used in the Subcase Information section to select a static solution subcase.

Format

STATSUB(type) = option

Argument	Options	Description
type	<BUCKLING, PRELOAD, PRETENS, STRUCTURE, BRAKE> Default = PRELOAD (for Non-Buckling subcases) BUCKLING (for Buckling subcases)	BUCKLING:	Referenced static subcase is used in forming the geometric stiffness needed for the linear buckling solution.
		PRELOAD:	Referenced static subcase defines a preload.
		PRETENS:	Referenced static subcase introduces pretensioning loads on bolts (Comment 4).
		STRUCTURE:	Referenced static subcase will determine the CONTACT/GAP status for a heat transfer analysis (Comment 6).
		BRAKE:	Referenced small displacement nonlinear quasi-static subcase will be used in a complex eigenvalue analysis (for brake squeal analysis) (Comment 7).
option	< SID > No default	SID:	Subcase identification number of a static solution subcase (Comment 5).

Comments

1.	A METHOD entry to define the eigenvalue extraction method is required in addition to a STATSUB entry for a linear buckling solution subcase.

2.	A linear buckling solution cannot be performed on a linear static subcase that uses inertia relief. STATSUB(BUCKLING) can only be used to reference buckling to linear static or nonlinear static (small displacement + N2S/S2S contact only) subcases.

STATSUB(PRELOAD) can only be used to reference linear static or nonlinear static (small displacement + N2S/S2S contact only) subcases. STATSUB(PRELOAD) can be used to apply preloading for linear static, normal modes, complex eigenvalue, direct frequency response, modal frequency response, direct transient response, and modal transient response solution sequences. Preloading applied to a Normal Modes Subcase is not transferred to modal solution sequences (with the same modal space and boundary conditions) in the same input deck. STATSUB(PRELOAD) can also be used to apply preloading for a Component Mode Synthesis (CMSMETH) subcase. STATSUB(PRELOAD) can be used with the AMSES eigensolver.

4.	STATSUB(PRETENS) is supported for nonlinear static subcases. Other subcase types can use STATSUB(PRELOAD), which refers to a pretension subcase, in order to incorporate the effect of pretensioning on natural frequencies, dynamic solutions, and so on.

5.	STATSUB(PRETENS) can only reference a subcase that precedes the current subcase in the input deck.

6.	STATSUB(STRUCTURE) is supported for both steady-state and transient heat transfer solution sequences.

7.	STATSUB(BRAKE) can only be specified within a Modal Complex Eigenvalue Analysis subcase and can only reference a small displacement nonlinear quasi-static analysis subcase. For more information, refer to Modal Complex Eigenvalue Analysis in the User's Guide.