PATRAN Beginner's Guide

¡
¡
¢
¢
¢
2 HOW TO START A PATRAN SESSION 2.2 Opening New Database
2 HOW TO START A PATRAN SESSION 2.3 Leaving a PATRAN Session
New Database
Template Database Name
/export/../patran2004r2/template.db
Filter
Modify Preferences ...
Change Template ...
Click on this
New Model Preference
Model Preference for :
bracket.db
Tolerance
10.0
based on Model
Default
Approximate Maximum
Model Dimension :
This is the largest dimension
of the example problem being
considered.
Change this to 100.
/amd_tmp/needle−16/usersn/userid/patran/*.db
Directories
.........................................../patran/.
.........................................../patran/..
Database List
Analysis Code
ABAQUS
Analysis Type :
Structural
Use the
Delete
char
or
Delete
This should display ABAQUS
key
to delete
characters
New Database Name
bracket
Filter
OK
OK
/export/../patran2004r2/*.db
Directories
Template Name
Filter
Filter
.........................................../patran/.
.........................................../patran/..
Figure 4: New database
Database Template
Cancel
Cancel
Database Template List
abaqus.db
base.db
template.db
Figure 5: Change template
Type
bracket
Click on this for
ABAQUS analysis.
Then this name
should appear in
the box below :
OK
Reset
4. Creating journal file bracket.db.jou at date
Figure 6: Model Preference
Note that “.db” is automatically appended to the name. This denotes “database”. An empty viewport
should appear with a black background. The axes will be displayed. The cross hair symbol
represents the origin. The name of the database is displayed at the top of the viewport.
Appendix A contains a brief review of the notations used in PATRAN. It also explains the purpose
of the five icons (repaint, window layering, cleanup, abort and undo) displayed at the top right hand
corner.
When a new database is opened, the following form appears (see Figure 6).
time
Click on the box marked ‘Model Dimension’ and change the 10 to 100.
For the current example problem this is the largest dimension. The Tolerance parameter which
is used later is calculated based on this value. Therefore it is important to get this right approximately.
Getting this wrong can create a few problems later. The tolerance is taken as 0.0005 of
the largest dimension, so it will 0.05 for the current example. More on tolerance later.
Click on the OK button. This will close that form.
In general when entering/editing data in boxes in a form you need to click on the box first to
indicate to the program that you wish to do so. In the rest of this document when reference is made to
entering data in a box it will be assumed that you have to click on that box first even though this may
not be explicitly stated. Where there are exceptions to this rule it will be pointed out.
The next step is to create the geometry.
2.3 Leaving a PATRAN Session
You can quit the current session at any time you wish. Make sure that the heartbeat is Green.
Then Click on the Quit button.
.
7
8