Difference between revisions of "FEM ConstraintContact"

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(Created page with "<translate> <!--T:1--> {{GuiCommand|Name=FEM ConstraintContact|MenuLocation=FEM → Constraint contact||Workbenches=FEM|Shortcut=|SeeAlso=FEM_tutorial|FEM...")
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{{GuiCommand|Name=FEM ConstraintContact|MenuLocation=FEM → Constraint contact||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}
{{GuiCommand|Name=FEM ConstraintContact|MenuLocation=Model → Mechanical Constraints → Constraint contact||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}
==Description== <!--T:2-->
==Description== <!--T:2-->
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==Use== <!--T:3-->
==Use== <!--T:3-->
#Click on [[Image:FEM ConstraintContact.png|32px]] or choose {{KEY| FEM}} {{KEY|[[Image:FEM ConstraintContact.png|32px]] Constraint contact}}  from the top menu.
#Click on [[Image:FEM ConstraintContact.png|32px]] or choose {{KEY|Model}} → '''Mechanical Constraints''' → {{KEY|[[Image:FEM ConstraintContact.png|32px]] Constraint contact}}  from the top menu.
#Select the master face.
#Select the master face.
#Select the slave face.
#Select the slave face.

Revision as of 22:07, 3 March 2018

FEM ConstraintContact.png FEM ConstraintContact

Menu location
Model → Mechanical Constraints → Constraint contact
Default shortcut
Introduced in version
See also
FEM tutorial


Creates a FEM constraint for contact between 2 surfaces.


  1. Click on FEM ConstraintContact.png or choose ModelMechanical ConstraintsFEM ConstraintContact.png Constraint contact from the top menu.
  2. Select the master face.
  3. Select the slave face.
  4. Enter a contact stiffness.
  5. Enter a friction coefficient.


  1. The contact constraint can only be applied to two faces.


  1. The contact stiffness should be 10 times the young's modulus of the material for hard contact. The higher the value for contact stiffness, the harder the contact between surfaces.
  2. The slave face is the face which penetrates into the master face, and therefore experiences more deformation.
  3. The *CONTACT PAIR card is used for modeling contact in CalculiX. The constraint uses Face-to-Face penalty contact and the contact formulation is explained in detail at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node112.html
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