New features in Version 2.1 of CalculiX (check the documentation!)
Procedures
- Accelerated linear dynamics calculations
- The nodes in which the solution is to be calculated in linear dynamics
calculations can be specified by the NSET parameter on the *MODAL DYNAMICS
card
- Introduced the parameter TIME RESET on the *STATIC and *HEAT TRANSFER
keyword cards in order to create steps of length zero (useful for steady
state steps in between transient steps)
Convergence messages
- The nodes in which the maximum deviation occurs are listed on the screen
Contact
- Improved the convergence of the penalty contact
- Coded linear pressure-overclosure (in addition to exponential
overclosure): PRESSURE-OVERCLOSURE parameter is required on the *SURFACE
BEHAVIOR card.
New elements
- The restrictor and branch elements, originally only for gases, can be
used for incompressible fluids too (in 1D-networks)
User subroutines
- The headers of some user subroutines were expanded.
Output
- frd-output can be limited to a set of nodes (parameter NSET) on the
*NODE FILE and *EL FILE cards
- Meaning of MAXU and MAXS for frequency calculations with cyclic symmetry
was changed (look at manual)
CalculiX GraphiX
- A Result-file can be read during run-time and replaces the existing data.
- The way result-files are read has changed. Up to now the results were
read
before the user-interface started. Now only the meta-information
(dataset-name etc.) is read at startup but the node-values are read only
if a certain dataset is requested. In this way the program starts much
faster and the memory-requirement is lower if not all data are viewed.
- Stress-components in the directions of a cylindrical system around the
x-axis are not longer computed automatically for all STRESS datasets.
Instead a new command "trfm" was implemented.
- The command name lc has changed to ds (dataset).
- Changed commands:
- copy/send: Existing sets are extended by the copied/sweeped entities.
- ds: is now "ds".
- del: "del l0 setname" will delete all lines with zero lenght.
"del se0" deletes all empty sets
- mids: Generate or delete midside-nodes.
- plot/plus: Plot lines with their end-points "plot lp set"
- proj: Moves now points and nodes to surfaces or element-faces.
- qlin: The key "x" will transform any line into a straight line.
- read: Now also result-files can be read during run-time and will
replace existing meshes and results. This allows batch-jobs
for post-processing.
- send: A so called "press-fit" connection between meshes can be
created.
It is based on equations with a forced deflection.
- send: To write frd-files with results needs now the parameter lc.
Otherwhise only the mesh is written.
- New commands:
- cntr: Define new rotational center of the drawing (as qcnt).
- cut: Create a section through the mesh (as qcut).
- ds: Was former "lc". Explicidly the last or last- of dataset
can be selected now.
- font: Defines the font to use in the drawing- and legend-window.
- qfil: Creates a fillet between two intersecting lines.
- qint: Extend two lines to their intersection-point.
- view: Controlls several viewing options like element-edges on/off
etc.
- trfm: Transforms displacements and stresses of the current dataset
in a cylindrical system.
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