| Abaqus Keywords Reference Guide |
|
| How to find keyword examples |
| Abaqus Keywords Reference Guide |
|
| How to find keyword examples |
This option can be used to input a matrix in sparse format.
Product: Abaqus/Standard
Type: Model data
Level: Model
Set this parameter equal to a label that will be used to refer to this matrix.
Set this parameter equal to the name of the alternate input file from which the data lines are to be read in text format. See “Input syntax rules,” Section 1.2.1 of the Abaqus Analysis User's Guide, for the syntax of such file names.
Set this parameter equal to the name of the .sim file to read a matrix from the SIM database. The MATRIX parameter is also required in this case.
If this parameter is omitted, it is assumed that the data follow the keyword line.
This parameter defines the matrix to be read from the SIM database. It must be used together with the INPUT parameter defining the .sim file.
Set MATRIX=STIFFNESS to read the stiffness matrix.
Set MATRIX=MASS to read the mass matrix.
Set MATRIX=VISCOUS DAMPING to read the viscous damping matrix.
Set MATRIX=STRUCTURAL DAMPING to read the structural damping matrix.
Set this parameter equal to a nonzero real number 
by which all matrix entries will be multiplied. The default value is 
.
This parameter defines the shape of the matrix.
Set TYPE=SYMMETRIC (default) to read the upper or lower triangular portion of a square symmetric matrix. If a full matrix is specified, corresponding terms above and below the diagonal must be equal.
Set TYPE=UNSYMMETRIC to read a square unsymmetric matrix.
First line:
Row node number.
Degree of freedom number for row node.
Column node number.
Degree of freedom number for column node.
Matrix entry.
Give data to define a symmetric matrix in lower triangular, upper triangular, or square format. For a square matrix to be symmetric, corresponding entries above and below the diagonal must have exactly the same values.
Repeat this data line as often as necessary.