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FEM: Constraint Force

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This page is a translated version of the page FEM ConstraintForce and the translation is 15% complete.
Outdated translations are marked like this.

FEM ConstraintForce

Menu location
Model → Mechanical Constraints → Constraint force
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Descriere

Această comandă aplică o forță de valoare dată [N] la geometria țintei selectată.

Cum se folosește

1)Aplicarea unei forțe în direcția normală a unei fațete

    • In Atelierul FEM, click pe Constraint Force or select ModelMechanical ConstraintsConstraint force pentru a deschide dialogul proprietăților Force Constraint

    • If you have Mesh displayed, you need to hide it (select the mesh object and press spacebar or right click and select Hide item) and show the original model.
    • Click on a face to which a force should be applied. It will appear in the list of geometrical objects.
    • Fill in Line load with a force value in [N] (attention: Not in [N/m])

    • Direction: In a typical case, you'll click this field empty to apply a force in normal direction to the face. You can revert the direction of the force by clicking Reverse direction. In other cases, you need to pick a face or plane, which is in normal to the force direction (it could differ from the face, to which the force is being applied)
    • Click pe obiectul Close to finish the dialog and create ConstraintForce

Properties

  • DateEnable Amplitude - introduced in 1.1: Enables the use of CalculiX's amplitude for the time variation of the force load. At a given time, magnitude of the load is multiplied by the amplitude value corresponding to that time. Linear interpolation is used between the specified values. Constant values are used outside of the specified range.
  • DateAmplitude Values - introduced in 1.1: Amplitude table in the following format:
time_1, amplitude_value_1
…
Default is linear increase from 0% at t=0 to 100% at t=1:
0, 0
1, 1

Notes

  • The defined force is applied uniformly to the selected objects. For example, if you define one force load with 200 N applied to two faces having the same area, each face will be uniformly loaded with 100 N.
  • This feature uses the *CLOAD card in CalculiX.