Users:Structural Optimization/Design Variables/Nodal Coordinates

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Contents

General Description

Short Info

Platzhaltertext (diese gesamtseite ist noch zu schreiben, nur das format ist bereitgestellt).

Die verschiedenen Version erklären, evtl. in Tabelle: DIR, NDIR, Node Plane, NodeVec

Gehört NodeSpaceBound auch in diese Gruppe? Dann evtl. auch das source-File in den entsprechenden Unterordner schieben.

evtl ein bild zur erklärung irgendein erklärungstext

referenzen wie diese: [1].


Parameters in the Input File

Compulsory Parameters
Parameter Values, Default(*) Description
MATERIAL EL-MAT int Linking to a material input block
INT_TYPE_HEXA FULL, REDUCED Control of integration type

20-noded elements are able to perform a uniform reduced integration (2x2x2 instead of 3x3x3) without hourglassing stabilisation

Optional Parameters
Parameter Values, Default(*) Description
EAS int Flag Enhances Assumed Strains (EAS) method

Possible values are:

  • 0* = EAS off
  • 9 = full and locking free linear strains can be described (recommended for one axial bending)
  • 15 = ellimination of parasitic bi-linear strains
  • 24 = full and locking free bi-linear strains can be described (recommended for two axial bending)
  • 30 = full tri-linear strains can be described


Example of a Complete Input Block

bla bla blub bla bla

EL-PROP 1: SOLIDHEXA1
MAT           = EL-MAT 1
INT_TYPE_HEXA = FULL
EAS           = 0


A complete test example

Model description

blabla mit bildern


Input File

bla


Documented Results

bla


Theory and Details

bla


References

  1. U. Andelfinger, E. Ramm: „EAS-Elements for two-dimensional, three-dimensional, plate and shell structures and their equivalence to HR-Elements“, in „International Journal for Numerical Methods in Engineeering“, Vol. 36, 1993, pages 1311-1337




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