developed to run on any graphical environment, including
Windows, Unix, Linux, Solaris, and even MacIntosh.
iSTRDYN is being
distributed on a fee basis. This means you do not buy
a copy, instead you purchase a user license. The term of
this license depends on the version of the program you select.
There are two versions available:
- Local - the entire program is
installed on a workstation or network server. The license
period is one year. If installed on a single machine,
the program will only operate on that computer. Multiple users can access and run
the network version. Typically, companies with steady
analysis needs will select this option.
- Remote - only the desktop client
is installed on a local computer, with the execution
performed on a managed host over the Internet. The
license period is one month. Only one user at a time can run
this version. Normally, infrequent or occasional users
will choose this option. Note that in order to run
this version, it is necessary for the client computer to
remotely connect with our server over the Internet. In
some cases, firewalls may severely limit or prevent this
If you have questions about which version is appropriate for
your needs, and if that version is compatible with your
computing environment, please contact us
for consultation. No matter which version is used, the
model file written by the program resides on the client computer
and can be transferred to/from different operating systems as
With the Local version, after the initial license period
expires, the license fee will drop to a support and maintenance
level, which is a fraction of the first year price. There
is no reduction in the license cost with the Remote version for
License fees for using
iSTRDYN start with a basic linear version and then
incrementally increase depending on which additional support
options are selected:
- Piecewise non-linear - definition of a
non-linear force-deflection relationship in the radial and
axial directions with an iterative solution
- Rolling element bearings -
specification of bearing properties in terms of geometry and
lubricants with non-linear iterative solution
- Fluid film bearings - selection of hydrodynamic
or hydrostatic supports by specifying geometry and
lubricants with non-linear iteration
- Magnetic bearings - representation of a complete
magnetic circuit model, consisting of sensors, controllers,
amplifiers, and actuators, including frequency dependent
Multiple user discounts will be provided.
For more details on pricing, please
contact us for a quote.
To examine the suitability of
iSTRDYN, a trial edition
is available. This is demo is a fully operating program
that is the Local version with basic linear supports. To
obtain a copy of this demo, which is time-limited for 30 days,
follow the downloading and installation instructions for the
Local version below.
Since the demo is the actual program, it does not include any
example files. If you would like to have some sample model
files sent to you, please let us know when you inquire about
downloading the demo.
Downloading and Installation - Local and Remote Versions
To obtain a copy of either program version, the setup files
are normally downloaded. If desired, a CD can be provided
for the Local version setup, although this method of
distribution may incur sales tax. Detailed instructions for downloading and
installing both versions are contained in the file "Downloading
and Installing iSTRDYN". Please review this
attempting to acquire and run the program.
* * * * * IMPORTANT NOTE * * * * *
Before starting any download, please
contact us to get a Username and
Password. It is not possible to download either
program version without these credentials.
process to download and install the Local version, for demo,
desktop, or network use, involves the following steps:
- Download the setup file (93 MB) by
- The Local install package is an executable file that
when run will unpack and place the program on a single computer or
network. To begin the installation, run the setup file
downloaded in Step 1.
instructions for installing
iSTRDYN on a local area network are contained in
the Local install package. If you are downloading the
Local version as a demo, it will only install as a desktop
- After running the
iSTRDYN will be ready for use. On Windows
machines, a desktop icon and a Programs folder will be
- Initial installations of the Local version will be
provided with a temporary license file, good for up to 90
days. During this time, a permanent license must be
obtained or the program will cease to operate. Demo
versions will have a 30 day license file. The demo can
be easily converted to a fully functional program without
downloading the entire setup file.
To download the necessary client files to run the Remote
version, the following steps are required:
- Make sure the most recent runtime version of Java is
available on the client machine.
to determine if a newer version is needed, and to download
the appropriate files.
- Once the Java runtime is installed or verified,
click here to begin the download and setup of the
iSTRDYN client interface
- With the Remote version, only the client is installed.
When this process is complete,
iSTRDYN is ready to run.
- There is no license file needed with the Remote version.
is a complicated program, the installation of either version makes very few
changes to the client file structure other than writing files to
a user-specified folder and normally does not require the client
and/or server to be restarted.