FEM ElementFluid1D: Difference between revisions

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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 FEM_ElementFluid1D.png|32px]] or choose {{KEY| FEM}} → {{KEY|[[Image:FEM FEM_ElementFluid1D.png|32px]] Fluid section for 1D flow}} from the top menu.
#Select the master face.
#Select Fluid type: Liquid, Gas or Open Channel
#Select the slave face.
#Select Section type: Pipe Manning, Pipe Inlet etc.
#Enter a contact stiffness.
#Enter Section type parameters.
#Select and add edge.
#Enter a friction coefficient.


==Limitations== <!--T:4-->
==Limitations== <!--T:4-->

Revision as of 07:36, 26 June 2017

FEM ConstraintContact

Menu location
FEM → Constraint contact
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Description

Creates a FEM fluid section element for aerodynamic and hydraulic networks

Use

  1. Click on File:FEM FEM ElementFluid1D.png or choose FEMFile:FEM FEM ElementFluid1D.png Fluid section for 1D flow from the top menu.
  2. Select Fluid type: Liquid, Gas or Open Channel
  3. Select Section type: Pipe Manning, Pipe Inlet etc.
  4. Enter Section type parameters.
  5. Select and add edge.

Limitations

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

Notes

  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