Users:Geometry Generation/Design BRep Elements
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(Difference between revisions)
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Design BRep elements are based on NURBS entities in the parameter space of another NURBS patch. | Design BRep elements are based on NURBS entities in the parameter space of another NURBS patch. | ||
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| + | The block has to be initialized by DE-BREP-NURBS. Every design brep element starts with DE-BREP-EL. This is followed by the ID, the corresponding part and property. | ||
== Coupling == | == Coupling == | ||
| + | |||
| + | Additional coupling quantities are the allowed tolerance between master and slave gauss point and the range/location on the NURBS patch. | ||
=== Example of a Complete Input Block === | === Example of a Complete Input Block === | ||
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DE-BREP-NURBS | DE-BREP-NURBS | ||
! coupling | ! coupling | ||
| − | DE-BREP-EL 1 1 | + | DE-BREP-EL 1 1 4 PATCH_PAR 1 OF DE-EL 1 PATCH_PAR 5 OF DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: brep edge - brep edge |
| − | DE-BREP-EL 2 1 | + | DE-BREP-EL 2 1 4 PATCH_PAR 1 OF DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: brep edge - design element 1D |
| − | DE-BREP-EL 3 1 | + | DE-BREP-EL 3 1 4 DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: design element 1D - design element 1D |
| − | DE-BREP-EL 4 1 | + | DE-BREP-EL 4 1 4 DE-BREP 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: designboundary ( = brep edge) - design element 1D |
| − | DE-BREP-EL 5 1 | + | DE-BREP-EL 5 1 4 DE-BREP 1 DE-BREP 2 TOL=0.1 [0 10][0 10] !coupling on an interval: designboundary ( = brep edge) - designboundary ( = brep edge) |
DE-BREP-EL 6 1 5 PATCH_PAR 1 OF DE-EL 1 PATCH_PAR 5 OF DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - brep edge | DE-BREP-EL 6 1 5 PATCH_PAR 1 OF DE-EL 1 PATCH_PAR 5 OF DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - brep edge | ||
DE-BREP-EL 7 1 5 PATCH_PAR 1 OF DE-EL 1 DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - design element 1D | DE-BREP-EL 7 1 5 PATCH_PAR 1 OF DE-EL 1 DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - design element 1D | ||
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! ID PART PROP NURBS_TOP | ! ID PART PROP NURBS_TOP | ||
DE-BREP-NURBS | DE-BREP-NURBS | ||
| − | DE-BREP-EL 1 1 | + | DE-BREP-EL 1 1 4 PATCH_PAR 1 OF DE-EL 2 !brep edge for supports, load, etc. |
!DE-BREP-EL 2 1 5 [0.0] OF PATCH_PAR 1 OF DE-EL 2 !point on brep edge for supports, load, etc. | !DE-BREP-EL 2 1 5 [0.0] OF PATCH_PAR 1 OF DE-EL 2 !point on brep edge for supports, load, etc. | ||
DE-BREP-EL 3 1 5 [0.0] OF DE-BREP 1 !point on design boundary ( = brep edge) for supports, load, etc. | DE-BREP-EL 3 1 5 [0.0] OF DE-BREP 1 !point on design boundary ( = brep edge) for supports, load, etc. | ||
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== Structural Elements == | == Structural Elements == | ||
| − | The implicit, geometric description within another geometric entity can be also used for strucutral elements. By now, these are [[Users:General FEM Analysis/Elements Reference/NURBS_BRep_Edge_beam|BRep Edge Beam]] and [[Users:General FEM Analysis/Elements Reference/NURBS_BRep_Edge_cord|BRep Edge Cord]] | + | The implicit, geometric description within another geometric entity can be also used for strucutral elements. By now, these are [[Users:General FEM Analysis/Elements Reference/NURBS_BRep_Edge_beam|BRep Edge Beam]] and [[Users:General FEM Analysis/Elements Reference/NURBS_BRep_Edge_cord|BRep Edge Cord]]. |
=== Example of a Complete Input Block === | === Example of a Complete Input Block === | ||
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!geometric definitions | !geometric definitions | ||
DE-BREP-EL 1 1 6 PATCH_PAR 1 OF DE-EL 1 !brep edge for supports, load, etc. | DE-BREP-EL 1 1 6 PATCH_PAR 1 OF DE-EL 1 !brep edge for supports, load, etc. | ||
| + | DE-BREP-EL 11 1 6 [0.0 10.0] OF PATCH_PAR 4 OF DE-EL 1 !interval on a brep edge for supports, load, etc. | ||
</pre> | </pre> | ||
Revision as of 08:48, 28 November 2016
Design BRep elements are based on NURBS entities in the parameter space of another NURBS patch.
The block has to be initialized by DE-BREP-NURBS. Every design brep element starts with DE-BREP-EL. This is followed by the ID, the corresponding part and property.
Contents |
Coupling
Additional coupling quantities are the allowed tolerance between master and slave gauss point and the range/location on the NURBS patch.
Example of a Complete Input Block
!=================================================================== ! ID PART PROP NURBS_TOP DE-BREP-NURBS ! coupling DE-BREP-EL 1 1 4 PATCH_PAR 1 OF DE-EL 1 PATCH_PAR 5 OF DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: brep edge - brep edge DE-BREP-EL 2 1 4 PATCH_PAR 1 OF DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: brep edge - design element 1D DE-BREP-EL 3 1 4 DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: design element 1D - design element 1D DE-BREP-EL 4 1 4 DE-BREP 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling on an interval: designboundary ( = brep edge) - design element 1D DE-BREP-EL 5 1 4 DE-BREP 1 DE-BREP 2 TOL=0.1 [0 10][0 10] !coupling on an interval: designboundary ( = brep edge) - designboundary ( = brep edge) DE-BREP-EL 6 1 5 PATCH_PAR 1 OF DE-EL 1 PATCH_PAR 5 OF DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - brep edge DE-BREP-EL 7 1 5 PATCH_PAR 1 OF DE-EL 1 DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: brep edge - design element 1D DE-BREP-EL 8 1 5 DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0 10] !coupling of a point: design element 2D - design element 2D DE-BREP-EL 9 1 5 DE-EL 1 DE-EL 2 TOL=0.1 [0 10][0.0] !coupling of a point: design element 2D - design element 1D DE-BREP-EL 10 1 5 DE-EL 1 DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: design element 1D - design element 1D DE-BREP-EL 11 1 5 DE-BREP 1 DE-EL 2 TOL=0.1 [0.0][0 10] !coupling of a point: designboundary ( = brep edge) - design element 2D DE-BREP-EL 12 1 5 DE-BREP 1 DE-EL 2 TOL=0.1 [0.0][0.0] !coupling of a point: designboundary ( = brep edge) - design element 1D DE-BREP-EL 13 1 5 DE-BREP 1 DE-BREP 2 TOL=0.1 [0.0][0.0] !coupling of a point: designboundary ( = brep edge) - designboundary ( = brep edge)
Boundary Conditions
Design BRep elements can be used for applying Dirichlet and Neumann boundary conditions. The type of the Dirichlet boundary condition is defined in the property and the support block. Respective properties are BRep Edge Coupling and BRep Point with corresponding BREP_TYPE.
Example of a Complete Input Block
!=================================================================== ! ID PART PROP NURBS_TOP DE-BREP-NURBS DE-BREP-EL 1 1 4 PATCH_PAR 1 OF DE-EL 2 !brep edge for supports, load, etc. !DE-BREP-EL 2 1 5 [0.0] OF PATCH_PAR 1 OF DE-EL 2 !point on brep edge for supports, load, etc. DE-BREP-EL 3 1 5 [0.0] OF DE-BREP 1 !point on design boundary ( = brep edge) for supports, load, etc. DE-BREP-EL 4 1 5 [0 10] OF DE-EL 2 !point on design element 2D for supports, load, etc. !DE-BREP-EL 5 1 5 [0.0] OF DE-EL 1 !point on design element 1D for supports, load, etc.
They have to be activated in the support block, but not added to the LD-COM block.
DE-SUP 1 1 DE-BREP1 DISP_X, DISP_Y, DISP_Z DE-SUP 2 1 DE-BREP1 DISP_T1, DISP_T2, DISP_T3
Structural Elements
The implicit, geometric description within another geometric entity can be also used for strucutral elements. By now, these are BRep Edge Beam and BRep Edge Cord.
Example of a Complete Input Block
!=================================================================== ! ID PART PROP NURBS_TOP DE-BREP-NURBS !geometric definitions DE-BREP-EL 1 1 6 PATCH_PAR 1 OF DE-EL 1 !brep edge for supports, load, etc. DE-BREP-EL 11 1 6 [0.0 10.0] OF PATCH_PAR 4 OF DE-EL 1 !interval on a brep edge for supports, load, etc.
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