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-CAU Contact Geometry Update

This module provides a new contact algorithm that takes signifikant changes of the contact geometry into account. See CV joint simulation. The module is used as an add-on to module PERMAS-CA.

In case of large relative displacements of two bodies in contact, the update of the contact properly reflects the change of the relative position of both bodies (s. Fig. 100 and 101).

If very accurate contact results are required, contact updating even reflects very small changes of the contact geometry which gives exact contact forces, displacements, stresses, etc..

The following features are supported by this module:

  • Special modelling is not required. Because the update process changes the position of the contacting surfaces, the contact geometry must be specified by surfaces (e.g. surface-to-surface or surface-to-node). Hence, node-to-node contact and contact to ground are not updated.
  • Contact updating works with and without friction.
  • Contact updating works with linear and nonlinear static analysis. For nonlinear applications, some modelling features are still restricted.

The geometry update is principally explained in Fig. 102. Steps 1 and 2 show the typical contact procedure and steps 3 and 4 show the first iteration of the updating process which will be repeated until a given number of iterations is performed or until a given accuracy is achieved. See also self contact.

nodal stresses
Extraction of a clip using update of contact geometry.
contact normal force
Contact pressure forces during extraction.
contact shear force
Contact frictional forces during extraction.