Users:Structural Optimization/Design Variables/Node Loads
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| + | == General Description == | ||
| + | |||
| + | === Short Info === | ||
| + | With this design variable, the nodal load can be optimized. | ||
| + | |||
| + | === Parameters in the Input File === | ||
| + | |||
| + | {| border="1" cellpadding="3" cellspacing="0" | ||
| + | |colspan="3" style="background:#efefef;"| 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 | ||
| + | |- | ||
| + | |colspan="3" style="background:#efefef;"| Optional Parameters | ||
| + | |- | ||
| + | !Parameter | ||
| + | !Values, Default(*) | ||
| + | !Description | ||
| + | |- | ||
| + | !BOUND | ||
| + | |OPT-BOUND ''ID'' | ||
| + | |Linking to a bound defined in BOUND block. | ||
| + | Remark: for valid bounds refer to the variable bounds section | ||
| + | |- | ||
| + | |} | ||
| + | |||
| + | |||
| + | === Example of a Complete Input Block === | ||
| + | |||
| + | This design variable can be defined for one node of for a nodal set. It is good practice to add a bound to the thickness design variables to avoid unrealistic values. In general, it is obvious to choose an upper and lower limit. Since the thickness is a scalar design variable, only SCALAR_BOUND is appropriate. | ||
| + | |||
| + | <pre> | ||
| + | OPT-VAR 1 | ||
| + | TYPE=NODE 100 SUBTYPE=DIR BOUND=OPT-BOUND 1 | ||
| + | TYPE=ND-SET 2 SUBTYPE=XYZ BOUND=OPT-BOUND 1 | ||
| + | TYPE=ND-SET 3 SUBTYPE=VEC D1=0.0 D2=0.0 D3=1.0 | ||
| + | </pre> | ||
| + | |||
| + | == A complete test example == | ||
| + | |||
| + | TODO | ||
Revision as of 11:53, 8 December 2016
Contents |
General Description
Short Info
With this design variable, the nodal load can be optimized.
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: for valid bounds refer to the variable bounds section |
Example of a Complete Input Block
This design variable can be defined for one node of for a nodal set. It is good practice to add a bound to the thickness design variables to avoid unrealistic values. In general, it is obvious to choose an upper and lower limit. Since the thickness is a scalar design variable, only SCALAR_BOUND is appropriate.
OPT-VAR 1 TYPE=NODE 100 SUBTYPE=DIR BOUND=OPT-BOUND 1 TYPE=ND-SET 2 SUBTYPE=XYZ BOUND=OPT-BOUND 1 TYPE=ND-SET 3 SUBTYPE=VEC D1=0.0 D2=0.0 D3=1.0
A complete test example
TODO
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