Detailed investigation of 3D frictional contact problems

CONTACT solves contact problems such as occur between wheel and rail, in roller bearings and in high-tech positioning systems. It aims to provide fast, reliable and detailed insights into contact interactions:

  • more detailed and complete than fast approximations such as Hertz' theory or the FASTSIM approach, and
  • many times faster than the detailed modeling provided by Finite Element approaches.

Capabilities

CONTACT implements the theories for rolling contact by Dr.ir. E.A.H. Vollebregt and Prof.dr.ir. J.J. Kalker of Delft University of Technology:

  • identification of the size and shape of the contact area;
  • identification of the regions with adhesion and (micro-)slip;
  • determination of the normal and tangential surface stresses (tractions) in the contact area;
  • calculation of elastic displacements and subsurface stresses in the bodies' interiors;
  • for stationary and instationary, rolling and sliding problems;
  • for massive homogeneous bodies of elastic and viscoelastic materials;
  • with Hertzian and non-Hertzian, "smooth edged" geometries.
The latter two aspects make that the contact is "concentrated" in a small, almost flat part of the bodies' exteriors.

Products

Our theories for rolling contact come in different forms. For an overview of these please refer to the Products page.

News

February, 2018: We released CONTACT version v18.1. This includes many improvements to the new wheel/rail contact module, and has many options added to the free version.

September, 2017: We released CONTACT version v17.1. This includes a beta-version of a whole new wheel/rail contact module.

August, 2016: We released CONTACT version v16.1. This includes fast calculation of the internal stresses and a new version of the CONTACT library.

April, 2016: Our CONTACT library is now available in MATLAB®, GENSYS and Universal Mechanism. For more information see the new Products page.

November 2015: The fourth edition of our course on contact mechanics with CONTACT was held in Delft, The Netherlands.

October, 2015: We released CONTACT version v15.1. This includes the fast solver TangCG and provides CONTACT as a library.

September, 2015: An invited presentation was held at the international Contact Mechanics conference (Colorado Springs, USA), giving an overview of recent developments.

April 2014: Two papers appeared on-line: describing the extensions of CONTACT for 3rd body layers and falling friction, and describing conformal contact simulation.

November 2012: The so-called "Kalker CONTACT add-on" to SIMPACK Rail is released for SIMPACK version 9.2 or higher.