PRO130     STRESS-11: A Structural Analysis Program for RT-11
Version: August 1985
 
Author: Digital Equipment Corporation
 
Submitted by: Stephen Hirsch, NZAEI, Canterbury, New Zealand
 
Operating System: RT-11 V5.1  Source Language: FORTRAN IV, MACRO-11
Memory Required: See below  Hardware Required: Floating point unit is
recommended because of large amount of double precision math.
Keywords: Engineering Applications, Professional-300 Series - RT-11
 
Abstract: STRESS-11 is an engineering application program used to
analyze forces, reactions and displacements in structural
designs.  Typical uses include the analysis of building
frames, bridge trusses, transmission towers and floor
systems.
 
Use of STRESS-11 requires no computer programming
experience.  Problem descriptions use engineering terms that
are familiar to a structural engineer.
 
To use the package, the engineer describes a structure with
a coordinate system that can be either 2 or 3 dimensional.
He then assigns a joint number and coordinates to each joint
in the structure.  With its information, the program is
capable of determining joint displacements, joint reactions
and forces for the structure.
 
The engineer then describes the physical properties of each
member, and the member and joint loads to be placed on the
structure.  With this information, the program is capable of
determining joint displacements, joint reactions and forces
for the structure.
 
This version of STRESS for RT-11 was developed on a
Professional 325 running the XM monitor.  Three link command
files are included which use different amounts of memory.
 
. High limit 23816 + OTS work area for SJ or FB monitor.
 
. High limit 23989 + OTS work area linked as a virtual job
  and will run on the Professional.
 
. High limit 23989 + OTS work area linked as a virtual job
  but with full high memory overlays and using 51235 words
  of memory.
 
The Inline FORTRAN compiler was used for program
development.  The link files above may not work if the
threaded code compiler is used.
 
Assoc. Documentation: There is a manual available as a separate
submission, see DECUS No. 110613.
 
Restrictions: It is not possible to perform more than one run with
STRESS without exiting
from the program and rerunning it.  On the second or subsequent runs
the
parser fails and reports a large number of non-existent errors.  There
is a
fault in the initialization routines somewhere which I have not been
able to
trace.  The program is written in a very unstructured way and has been
modified extensively many times, making debugging very difficult.
 
Media (Service Charge Code): One RX50 Diskette (JA)  Format: RT-11