Commands
Specifies a 2D geometry, then creates zones by extruding into the third dimension. Creates and manipulates a 2D geometric description of a model, which can be extruded in the third dimension to create 3D zones. Multiple sets of extrude data can be created, each under a different name. Points are created in space, connected to edges, which are themselves connected into blocks. Edges are either linear or curved, in which case they follow a path given by a number of control points. Blocks of two types can be created in the Extruder: 3- or 4-sided blocks with structured mesh (“regular blocks”) and blocks with 5 or more sides and unstructured mesh (“irregular blocks” - these blocks may have convex or concave boundary, may be multiply-connected and/or contain nested blocks). Both structured and unstructured meshes consist of triangular and/or quadrilateral elements. Upon extrusion, a single zone (brick or wedge) is created from each element of the mesh.
Number of zones and their ratio can be assigned for every edge and they propagate automatically across all regular blocks attached to the edge. However, these parameters are unique for every edge in an irregular block; upon any changes of edge parameters, including vertex locations, the unstructured mesh has to be re-created. A multiplier factor can be assigned to a regular block to increase (densify) the number of zones in it. Irregular blocks do not use multipliers.
Points, edges, and blocks can be assigned group names, which are then assigned to the gridpoints, faces and zones created by them.
The extrude data are also accessible by FISH, which means that extruded geometry can be scripted and parameterized.
The FLAC3D user interface provides an interactive front end to these commands, allowing one to graphically create 2D models and then extrude them.
EXTrude Block commands
| extrude block create | |
| extrude block delete | |
| extrude block group | |
| extrude block id | |
| extrude block list | |
| extrude block multiplier | |
| extrude block position |
EXTrude Edge commands
| extrude edge clear | |
| extrude edge combine | |
| extrude edge create | |
| extrude edge delete | |
| extrude edge group | |
| extrude edge id | |
| extrude edge list | |
| extrude edge ratio | |
| extrude edge ratio-isolate | |
| extrude edge size |
EXTrude Mesh commands
| extrude mesh gradation | |
| extrude mesh list | |
| extrude mesh mode | |
| extrude mesh optimization | |
| extrude mesh quad-weight | |
| extrude mesh reset | |
| extrude mesh shape-quality | |
| extrude mesh target-size | |
| extrude mesh type |
EXTrude Point commands
| extrude point create | |
| extrude point delete | |
| extrude point group | |
| extrude point id | |
| extrude point list | |
| extrude point transform |
EXTrude Segment commands
Modifies the segments that describe how the 2D model is extruded in the third dimension. Each segment is identified by an index, from 1 to the number of segments in the extrusion. All operations is done for the current extrude set.
| extrude segment add | |
| extrude segment clear | |
| extrude segment delete | |
| extrude segment index | |
| extrude segment list | |
| extrude segment origin |
EXTrude SEt commands
| extrude set automatic-validate | |
| extrude set automatic-zone | |
| extrude set clear | |
| extrude set delete | |
| extrude set list | |
| extrude set metadata | |
| extrude set select | |
| extrude set system | |
| extrude set update-polygons |
| Was this helpful? ... | PFC 6.0 © 2019, Itasca | Updated: Nov 19, 2021 |