Solution of contact problems by FETI domain decomposition with natural coarse space projections

2000 ◽  
Vol 190 (13-14) ◽  
pp. 1611-1627 ◽  
Author(s):  
Z. Dostál ◽  
Francisco A.M. Gomes Neto ◽  
Sandra A. Santos
Author(s):  
Ihor Prokopyshyn

We consider a thermoelastic multibody contact problem for finite bodies with unilateral mechanical and imperfect thermal contact conditions. Using a penalty method, we obtain a weak formulation of this problem in the form of a system of linear and nonlinear variational equations in Hilbert space. To solve this variational system, we propose a class of iterative Robin type domain decomposition algorithms. In each iterative step of these algorithms one have to solve two linear variational equations for each of the bodies, which correspond to heat conduction problem with Newton boundary conditions on the possible contact areas and linear elasticity problem with additional volume forces and Robin boundary conditions respectively. The program implementation of proposed algorithms is made for plane thermoelastic contact problems with the use of linear and quadratic finite element approximations on triangles. The numerical analysis is performed for one-body and two-body thermoelastic contact problems.


Sign in / Sign up

Export Citation Format

Share Document