Users:Structural Optimization/Design Variables/Node Loads

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=== Short Info ===
 
=== Short Info ===
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Platzhaltertext (diese gesamtseite ist noch zu schreiben, nur das format ist bereitgestellt).  
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With this design variable, the nodal load can be optimized.
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Die verschiedenen Version erklären, evtl. in Tabelle: DIR, NDIR, Node Plane, NodeVec
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Gehört NodeSpaceBound auch in diese Gruppe? Dann evtl. auch das source-File in den entsprechenden Unterordner schieben.
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evtl ein bild zur erklärung [[File:Element_hexa_topo.png|400px|border|up|irgendein erklärungstext]]
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referenzen wie diese:
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<ref name="AnRa93"
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> 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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</ref>. 
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Known Bugs: Filtering does not work for these design variables
  
 
=== Parameters in the Input File ===
 
=== Parameters in the Input File ===
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!Description
 
!Description
 
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!MATERIAL
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!TYPE
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|EL-MAT ''int''
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|LD-NODE ''ID''
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|Linking to a material input block
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|Linking to previously defined node load
 
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!INT_TYPE_HEXA
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!SPLIT
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|FULL, REDUCED
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|''0'',''1''
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|Control of integration type <br>
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|0: whole LD-NODE block is optimized at once; 1: node load is optimized for each node individually
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20-noded elements are able to perform a uniform reduced integration (2x2x2 instead of 3x3x3) without hourglassing stabilisation
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|-
 
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|colspan="3" style="background:#efefef;"| Optional Parameters
 
|colspan="3" style="background:#efefef;"| Optional Parameters
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!Description
 
!Description
 
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!EAS
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!BOUND
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|''int''
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|OPT-BOUND ''ID''
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|Flag Enhances Assumed Strains (EAS) method <br>
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|Linking to a bound defined in BOUND block.
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Possible values are:  
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Remark: only SCALAR_BOUND in combination with SPLIT=1 is working
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* 0*  = EAS off
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* 9  = full and locking free linear strains can be described (recommended for one axial bending)
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* 15 = ellimination of parasitic bi-linear strains
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* 24 = full and locking free bi-linear strains can be described (recommended for two axial bending)
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* 30 = full tri-linear strains can be described
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=== Example of a Complete Input Block ===
 
=== Example of a Complete Input Block ===
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bla bla blub bla bla
 
  
 
<pre>
 
<pre>
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EL-PROP 1: SOLIDHEXA1
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OPT-VAR 1
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MAT          = EL-MAT 1
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TYPE=LD-NODE 1 SPLIT=1 BOUND=OPT-BOUND 1
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INT_TYPE_HEXA = FULL
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EAS          = 0
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</pre>
 
</pre>
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== A complete test example ==
 
== A complete test example ==
  
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TODO
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=== Model description ===
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blabla mit bildern
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<gallery caption="" widths="350px" heights="350px" perrow="2">
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File:Cantilever_locking.JPG | HEXA8
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File:Cantilever_lockingfree.JPG | HEXA8EAS9
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</gallery>
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=== Input File ===
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bla
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=== Documented Results ===
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bla
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== Theory and Details ==
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bla
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== References ==
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<references/>
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Latest revision as of 12:25, 8 December 2016


Contents

General Description

Short Info

With this design variable, the nodal load can be optimized.

Known Bugs: Filtering does not work for these design variables

Parameters in the Input File

Compulsory Parameters
Parameter Values, Default(*) Description
TYPE LD-NODE ID Linking to previously defined node load
SPLIT 0,1 0: whole LD-NODE block is optimized at once; 1: node load is optimized for each node individually
Optional Parameters
Parameter Values, Default(*) Description
BOUND OPT-BOUND ID Linking to a bound defined in BOUND block.

Remark: only SCALAR_BOUND in combination with SPLIT=1 is working


Example of a Complete Input Block 

OPT-VAR 1
 TYPE=LD-NODE 1 SPLIT=1 BOUND=OPT-BOUND 1

A complete test example

TODO





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