Higher order dual Lagrange multiplier spaces�for mortar finite element discretizations

CALCOLO ◽  
2002 ◽  
Vol 39 (4) ◽  
pp. 219-237 ◽  
Author(s):  
B. P. Lamichhane ◽  
B. I. Wohlmuth
Keyword(s):  
Finite Element ◽  
Lagrange Multiplier ◽  
Higher Order ◽  
Finite Element Discretizations ◽  
Element Discretizations

scholarly journals A quasi-symmetric formulation for contact between deformable bodies

2008 ◽  
pp. 907-918
Author(s):  
Lionel Fourment
Keyword(s):  
Finite Element ◽  
Lagrange Multiplier ◽  
Numerical Results ◽  
Test Cases ◽  
Contact Conditions ◽  
Finite Element Software ◽  
Finite Element Discretizations ◽  
Deformable Bodies ◽  
Symmetric Formulation ◽  
Element Discretizations

In the frame of contact issues between 3D deformable bodies with non-matching finite element discretizations of possibly very different mesh sizes, a quasi-symmetric formulation is proposed to obtain satisfactory results whichever body is selected as master or slave. This approach is not based on usual mortar elements in order to avoid the creation of an additional integration surface. It draws its inspiration from a symmetric treatment of the contact conditions, where the formulation is made compatible by replacing the Lagrange multiplier of the master body by the projection of the slave one. Numerical results are obtained within the FORGE3® finite element software. Numerous 3D test cases numerically show that this approach actually solves the main issues of contact between deformable bodies, in a rather simple way.

Sign in / Sign up

Export Citation Format

Share Document