FEM ConstraintContact: Difference between revisions
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==Description== <!--T:2--> |
==Description== <!--T:2--> |
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Creates a FEM constraint for contact between 2 surfaces. |
Creates a FEM constraint for contact between 2 surfaces. |
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==How to use== <!--T:3--> |
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#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. |
#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. |
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#Select the master face. |
#Select the master face. |
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==Limitations== <!--T:4--> |
==Limitations== <!--T:4--> |
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#The contact constraint can only be applied to two faces. |
#The contact constraint can only be applied to two faces. |
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==Notes== <!--T:5--> |
==Notes== <!--T:5--> |
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#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. |
#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. |
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#The slave face is the face which penetrates into the master face, and therefore experiences more deformation. |
#The slave face is the face which penetrates into the master face, and therefore experiences more deformation. |
Revision as of 09:10, 4 March 2018
FEM ConstraintContact |
Menu location |
---|
Model → Mechanical Constraints → Constraint contact |
Workbenches |
FEM |
Default shortcut |
None |
Introduced in version |
- |
See also |
FEM tutorial |
Description
Creates a FEM constraint for contact between 2 surfaces.
How to use
- Click on or choose Model → Mechanical Constraints → Constraint contact from the top menu.
- Select the master face.
- Select the slave face.
- Enter a contact stiffness.
- Enter a friction coefficient.
Limitations
- The contact constraint can only be applied to two faces.
Notes
- 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.
- The slave face is the face which penetrates into the master face, and therefore experiences more deformation.
- 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