Migration of outer race of a ball bearing in a housing
by a rotating shaft under constant loading.

This module has been designed 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). The module is used as an add-on to module PERMAS-CA (see preceding section).
The functionality comprises the following features:

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

Gasket elements can be alternatively handled as integral part of the contact iteration instead of a feature in nonlinear material analysis. This leads to a remarkable reduction of runtime compared to the classical solution method. In particular, this runtime reduction will be much higher, when the nonlinear features are contact and gasket elements only. The runtime reduction is still significant, if additional nonlinearities are applied.

Conical press-fit with all-slipping friction