
                     PROCISION(tm) analysis software

                             Version 3.51

                            RELEASE  NOTES

                           October 19, 1999 

These release notes describe the changes from PROCISION(tm) v3.50 to v3.51.


Ability to apply different types of boundary conditions to same entities
------------------------------------------------------------------------

Procision(tm) v.3.51 now permits the application of more than one boundary
condition to an entity. For example, pressure can now be combined with bearing
load on the same surface, etc.

The restriction remains that the boundary conditions applied to the same
entity can not be of the same type. E.g. two pressures can not be combined on
the same surface, etc.

Note that Procision(tm) checks for the compatibility of boundary
conditions should they overlap. E.g. load boundary condition can not be
combined with immovable one, etc.


Boundary conditions on 'composite' surfaces and edges
-----------------------------------------------------

It is well known that Pro/ENGINEER(tm) often represents revolved features like
holes, with two or more surfaces.

Procision(tm) v.3.51 now recognizes such 'composite' entities when applying
boundary conditions, and considers them as a single entity. For example, when
constraining a hole, the user no longer has to select and constrain both
surfaces separately; selecting either of two surfaces will result in
constraining the whole hole.

Note that non-uniform boundary conditions are not permitted on 'composite'
entities.


'Shift' key instead of 'Alt' key in post-processor
--------------------------------------------------

Due to the difficulties of implementing actions on 'Alt' key on 
Windows NT(tm) platforms, the 'Shift' key is now used instead of 'Alt'.

Therefore, the 'Shift' key must be used from now on to view the part 
wireframe in Procision(tm) post-processor.


Less RAM requirements
---------------------

More of the temporary data created and used during Procision(tm) solver run is
now written on disk. This results in less RAM and swap requirements, which is
important when solving big models.


More refined algorithm for stress concentration problems
--------------------------------------------------------

The algorithm used when solving stress concentration problems, has been
further refined. This results in more accurate and faster solutions.


Bugs Fixed
----------

Most of the known bugs have been fixed. The most significant were:
     - 'bad topology' error while processing part's geometry (NT platform only);
     - error in manual concentrators conversion when pre-3.50 model file
       was retrieved;
     - a few bugs in stress concentration algorithms that might result in
       erroneous stress plots, especially near dividers;
     - divider identification during subparts merge;
     - pathname could not be entered while changing the working directory;
     - post-processor's scale legend might now fit into the post-processing
       window if another result plot opened (Unix platforms only);
     - drawing of Min/Max dots in post-processor (NT platform only);
     - abscence of 'color ramp' functionality on HP UX platform;


Known bugs
----------

The 'color ramp' functionality is still unavailable on Windows NT(tm)
platform.
