New features in Version 2.21 of CalculiX (check the documentation!)
Procedures
- Coded sensitivity and feasible direction search for
two-dimensional elements (plane stress, plane strain, axisymmetric).
- The feasible direction procedure now automatically generates an input
deck for the mesh update (jobname.equ): facilitates optimization.
Elements
- Added a channel joint network element.
- Superelements can now be taken into account in static and frequency
calculations by providing the stiffness and mass matrix (*MATRIX ASSEMBLE).
Materials
- Included the Johnson-Cook hardening model.
- Coded Mohr-Coulomb plasticity.
- Changed the deformation plasticity law from Cauchy stress vs. Euler
strain to Cauchy stress vs. Hencky strain.
- Improved the routine addressing Abaqus umats for large deformations.
Documentation
- Included a section on Mohr-Coulomb-plasticity.
- Explained the treatment of thermal strain (beginning of Section 6: Theory).
Speed
- Accelerated explicit dynamic calculations.
Output
- Matrix output triggered by a *SUBSTRUCTURE MATRIX OUTPUT card can be
stored in a format readible by a subsequent *MATRIX ASSEMBLE card.
CalculiX GraphiX
- Changed or extended commands:
- asgn The user might now define the browser used to view the helpfiles,
the helpfiles and the viewer for graps. Eventually with their
paths.
This should be done in the cgx initializing file .cgx
- ds The entities of 2 datasets can be used to calculate a new dataset
The following operators are known ['+'|'-'|'*'|'/'].
- plot/plus
If no set is specified, the entities of the given type of all
sets are shown. Additionally the use of wildcards(*) is now supported.
- prnt All sets used to show the visible entities are listed if the
parameter 've' is used.
- split Surfaces with holes can be splitted by shapes and other surfaces.
Exactly one body can be splitted per split command. But
only if the split would lead to exactly two parts.
In other cases successive split commands are needed.
A split might be forced to result in still connected or disjunct
parts.
- surf Shapes and nurs can be used:
- If a surface is defined based on lines a shape or the keyword
"BLEND" might precede the line names.
- If a set containing the lines is used it might now also contain
a shape or nurbs which will be used for the surface definition.
- If only a shape name follows the surface name it will be added
to the surface definition.
- New commands:
- aver averages coordinates of points and nodes and values of nodes
- setl To lock a set. A locked set can not store any additional entity
and no entity can be removed.
- subm like 'menu' the user can link commands to the menu but with that
command he can collect them in a common submenu.
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