Welcome to the Homepage of INTES GmbH, Stuttgart

If this webpage is presented to you in a simple layout, you are probably using an old browser (e.g. Netscape 4.78) without sufficient CSS-support. In order to be able to utilize this website in full extent, please use a modern browser.


Cookies are small text files that are placed on your computer by websites that you visit. They are widely used in order to make websites work, or work more efficiently, as well as to provide information to the owners of the site. This website makes use of cookies to monitor visitor sessions. No personal information is stored in the cookie that is issued by the site. The value stored in the cookie is an anonymous identifier, which is not linked to any other personal information you may give us during your visit. If you do not wish to receive these cookies you can disable them in your browser, though doing so may affect the functionality of our website. Most web browsers allow some control of cookies through the browser settings. To find out more about cookies, including how to see what cookies have been set and how to manage and delete them, visit www.allaboutcookies.org (opens in a new window).

PERMAS-CAX Extended Contact Analysis

Migration of rotating loaded ball bearing (from right to left line during one rotation, magnification factor 50)
Migration of outer race of a ball bearing in a housing
by a rotating shaft under constant loading.

This module has been designed for ambitious slip-stick problems and to provide new contact solution algorithms for large contact models (more than 10,000 contact node pairs) in order to essentially accelerate contact analysis runs again (by a factor of 3 and beyond), e.g. performance breakthrough. The module is used as an add-on to module PERMAS-CA.
The functionality comprises the following features:

  • High performance iterative solution algorithms to accelerate standard contact analysis with normal and frictional contact, see, engine analysis.
  • An additional very stable iteration method for critical slip-stick problems (when all contacts get into sliding state, see figure).

Gasket elements are handled as integral part of the contact iteration through contact controlled nonlinear gasket analysis (CCNG analysis) by default. This leads to a remarkable reduction of run time compared to the classical solution method with nonlinear material behaviour. In particular, this run time reduction will be much higher, when the nonlinear features are contact and gasket elements only. The run time reduction is still significant, if additional nonlinearities are applied.

For sliding friction between dynamically moving parts a velocity field can be prescribed to take it into account in a quasi-static contact analysis (see Brake Squeal Analysis).

Conical press-fit
Conical press-fit with all-slipping friction