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Preliminary Data
ASAS (Non-Linear) User Manual
PLAS
take plasticity effects into account
LARG
include large displacement effects in the calculation of strains and geometric
stiffness matrices.
This directive should be accompanied by the command
UPDATE GEOM (see UPDATE command)
CONL
use conservative pressure loading - i.e. calculate pressure loads using original
geometry throughout.
Only applicable with UPDATE GEOM (see UPDATE
command)
NRES
do not carry forward residuals into next increment
FLNS
form natural stiffness (i.e. Young’s modulus*Area) for FLA2 and FAT2 elements
CREP
creep analysis
NREC
(only use with the GROUP command). The stresses will not be recovered nor
element stiffnesses be reformed for elements in the group
EXPL
*
user explicit temporal integration scheme for transient analysis
: character to indicate the following text (up to and including column 80) forms a title for this
group
title
: any alphanumeric group title. It must be preceded by an asterisk (*). The title is used in the
output from ASASNL to describe the group
Notes
1.
If no directives are given, linear elastic behaviour is assumed with the default implicit temporal
2.
integration scheme for transient analysis.
Gaps and FLA2/FAT2 elements must always belong to their own group and must not be mixed with other
element types. In general, it is strongly recommended that each group defined comprises only one
element type to facilitate post-processing of the analysis results.
5.1.11
HYDR Command
This command defines the name and details of the file containing the hydrodynamic information. The command
is mandatory if linkage to the hydrodynamic data is required, e.g. import of RAOs via the load function type
RAOS.
HYDR
AQWA
aqwaid
(istr)
NRAO
filename
(wfform)
(wdform)
(raoform)
(rotform)
Parameters
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