AdCo EngineeringGW Consultant and Developer for Market-Leading CAE Software Vendor ANSYS, Inc.
Collaboration with Global Market LeaderSince 2014, AdCo EngineeringGW GmbH proudly collaborates with ANSYS, Inc. as a consultant and developer for their Computer-Aided Engineering (CAE) software products. ANSYS, Inc., headquartered in Canonsburgh, PA, USA, is the global market-leading vendor for CAE software. This long-term collaboration covers various fields of CAE and currently focuses on mortar-based finite element methods (FEMs) for contact mechanics. The collaboration was initiated with the help of CADFEM GmbH, headquartered in Grafing, Germany, long-term sales partner of ANSYS, Inc. and ANSYS Elite Channel Partner. In the CADFEM Journal 02/2014 it was reported on the collaboration between AdCo EngineeringGW GmbH and ANSYS, Inc.
Mortar-Based Finite Element Methods: Cutting-Edge Approaches to Contact MechanicsContact phenomena are frequently observable in nature as well as biological systems, and they are part of a variety of technical systems and machine components. To name but a few technical examples, contact plays a major role when considering gears, bearings, shafts, seals and car tires (see Fig. 1). In fact, there is merely an astoundingly low number of non-linear mechanical problems in which contact does not play any role at all. Contact may occur as tied or unilateral, and issues such as adhesion and frictional sliding may be present.
In many cases, there are further physical phenomena appearing in combination with pure contact and friction, for example,
- thermal effects such as heating,
- and complex materials.
Just to provide two examples, (substantial) heating may occur as a result of frictional contact for brake discs such as the one depicted in Fig. 2, and hydrodynamic lubrication effects usually become prevalent for a tire as shown in Fig. 1 as soon as roadways get wet (“aquaplaning”).
From Academia to IndustryMeanwhile, computational methods based on the mortar approach are state-of-the-art methods for numerically solving the present problems of contact mechanics as well as mesh-tying. Recent research on mortar methods has proven that they outperform traditional methods for various academic setups, and AdCo EngineeringGW now transfers this performance to industrial applications. In fact, besides the aforementioned consistent load transfer for non-matching interface discretizations, several further advantages of mortar methods compared to traditional methods when simulating contact problems can be identified, for instance,
- the improved robustness of non-linear solution schemes, including the search for active and non-active contact zones,
- the accurate representation of secondary mechanical quantities such as contact stresses / tractions,
- the accurate treatment of sliding contact scenarios such as dropping-edge contacts, and
- a natural compatibility with various novel discretization paradigms such as NURBS-based isogeometric analysis (IGA).