Transient three-dimensional contact problems: mortar method. Mixed methods and conserving integration

Hesch, Christian; Betsch, Peter
October 2011
Computational Mechanics;Oct2011, Vol. 48 Issue 4, p461
Academic Journal
The present work deals with the development of an energy-momentum conserving method to unilateral contact constraints and is a direct continuation of a previous work (Hesch and Betsch in Comput Mech , doi:) dealing with the NTS method. In this work, we introduce the mortar method and a newly developed segmentation process for the consistent integration of the contact interface. For the application of the energy-momentum approach to mortar constraints, we extend an approach based on a mixed formulation to the segment definition of the mortar constraints. The enhanced numerical stability of the newly proposed discretization method will be shown in several examples.


Related Articles

  • Optimization of acetabular component orientation using DOE. Krepelka, Mircea; Toth-Taşcău, Mirela // AIP Conference Proceedings;Sep2012, Vol. 1479 Issue 1, p1091 

    Stress shielding is increasingly recognized as an important cause of acetabular component failure. Several studies have been focused on improving the acetabular component placement to reduce the risk of dislocation, impingement and range of motion but little is known of its influence on...

  • Circulation based models for Boussinesq gravity currents. Borden, Zachary; Meiburg, Eckart // Physics of Fluids;Oct2013, Vol. 25 Issue 10, p101301 

    In addition to the conservation of mass and horizontal momentum, existing analytical models of gravity currents traditionally require an assumption about the conservation or loss of energy along specific streamlines for closure. Here, we show that the front velocity of gravity currents can be...

  • Transient 3d contact problems-NTS method: mixed methods and conserving integration. Hesch, Christian; Betsch, Peter // Computational Mechanics;Oct2011, Vol. 48 Issue 4, p437 

    The present work deals with a new formulation for transient large deformation contact problems. It is well known, that one-step implicit time integration schemes for highly non-linear systems fail to conserve the total energy of the system. To deal with this drawback, a mixed method is newly...

  • Bonding constraints and defect formation at interfaces between crystalline silicon and advanced... Lucovsky, G.; Wu, Y.; Niimi, H.; Misra, V.; Phillips, J.C. // Applied Physics Letters;4/5/1999, Vol. 74 Issue 14, p2005 

    Discusses the importance of understanding how departures from ideal bonding at silicon-dielectric interfaces generate electrically active defects that limit performance and reliability. Semiconductor device physics; Criteria for formation of low defect density glasses; Extension of constraint...

  • Effect of Friction on the Size of the Near-tip Contact Zone in a Penny-shaped Interface Crack. Graciani, Enrique; Mantič, Vladislav; París, Federico // Key Engineering Materials;2014, Vol. 618, p179 

    Relations between different solutions of an interface crack in a neighborhood of the crack tip given by the open model, frictionless and frictional contact models of interface cracks are analyzed numerically for a penny-shaped interface crack subjected to remote tension. A new analytic...

  • A thermodynamic model of multiphase flows with moving interfaces and contact line. Wang, Yongqi; Oberlack, Martin // Continuum Mechanics & Thermodynamics;Aug2011, Vol. 23 Issue 5, p409 

    In this paper, we develop a general continuum description for thermodynamic multiphase flows with intersecting dividing surfaces, and three-phase common contact line, taking the contribution of the excess surface and line thermodynamic quantities into account. Starting with the standard...

  • Transient Momentum Balance—A Method for Improving the Performance of Mean-Value Engine Plant Models. Katrašnik, Tomaž // Energies (19961073);Jun2013, Vol. 6 Issue 6, p2892 

    Mean-value engine models (MVEMs) are frequently applied in system-level simulations of vehicle powertrains. In particular, MVEMs are a common choice in engine simulators, where real-time execution is mandatory. In the case of real-time applications with prescribed, fixed sampling times, the use...

  • Modeling of generalized Newtonian fluid flow at a fluid-porous interface. Cloete, Marèt; Smit, Francois // AIP Conference Proceedings;Sep2012, Vol. 1479 Issue 1, p181 

    This paper discusses the coupling of the momentum and the Brinkman equations for generalized Newtonian fluids for modeling laminar viscous flow over a porous surface. An analytical model was derived for a Herschel-Bulkley fluid traversing a composite domain consisting of an open channel and an...

  • Front-tracking Lattice Boltzmann Simulation of a Wedge Water Entry. Zarghami, Ahad; Porfiri, Maurizio; Jannelli, Elio; Ubertini, Stefano // AIP Conference Proceedings;2015, Vol. 1648 Issue 1, p1 

    In this work, we present the implementation of a front-tracking variant of the lattice Boltzmann method to model water entry problems. In this method, the fluid is considered incompressible, the gas dynamics is neglected and the free surface is represented through a layer of interface cells,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics