.disp file

The .disp file is an OptiStruct ASCII format results file.

File Creation

This file is created when the OPTI, OS or BOTH formats are chosen. (See documentation for the I/O Option OUTPUT).

File Contents

Result	Description
Acceleration	Acceleration results from frequency response analyses. Output is controlled by the I/O Option ACCELERATION.
Displacement	Displacement results from linear static, inertia relief, and frequency response analyses. Output is controlled by the I/O Option DISPLACEMENT.
Eigenvector	Eigenvector results from normal modes and linear buckling analyses. Output is controlled by the I/O Option DISPLACEMENT.
Velocity	Velocity results from frequency response analyses. Output is controlled by the I/O Option VELOCITY.

File Format

The displacement file has the following format:

For each iteration, the following header is used:
	iter	Iteration	Numids
where:
	iter	is a keyword identifying that the next field is the iteration number.
	Iteration	is the iteration number.
	Numids	is the number of linear static subcases plus the number of calculated normal and buckling modes.

Within the iteration section, the following header is used for each linear static subcase, normal or linear buckling mode, or direct modal frequency response:
	LCID	Numnod	Freq	Result: SPCcase (Datatype)
where:
	LCID	is the output ID for the subcase or mode. This is not necessarily the same as the subcase ID defined in the input data.
	Numnod	is the number of grids in the model.
	Freq	is the frequency or Buckling eigenvalue (1.0 for static subcases).
	Result	is a keyword declaring the result type given. DISP indicates displacement result. VELO indicates a velocity result (for frequency response analysis only). ACCE indicates an acceleration result (for frequency response analysis only).
	SPCcase	is the SPC set identification number for linear static, inertia relief, or frequency response subcases or 1 for eigenvectors.
	Datatype	is a keyword indicating the type of subcase involved. (LOAD) declares data is from a static subcase. (EIGV) declares data is from a normal modes subcase. (BKLV) declares data is from a linear buckling subcase. (DFRQ) declares data is from a direct frequency response subcase. (MFRQ) declares data is from a modal frequency response subcase.

Within the subcase or mode section, the following information is provided for each node:
	NID	X disp	Y disp	Z disp
where:
	NID	is the node identification number.
	X	is the X displacement of the node.
	Y	is the Y displacement of the node.
	Z	is the Z displacement of the node.

Comments

1.	The I/O option RESULTS controls the frequency of output for analytical results during an optimization.