PragTic Description

The PragTic software was build to effectively implement multiaxial computation of fatigue life either from some separate load record or from a load record accompanied with FE-results. Nowadays the final application is equipped with features like:

* Full import of MSC.NASTRAN data through *.dat, *.nas and *.pch files.

* Reading of nearly any ASCII FE-data observing relatively common formatting rules - this feature is usable for solid elements only.

* Output of solution to a table form (readable e.g. in MS Excel), to the FEMAP neutral file (*.neu) or to a batch file readable by Ansys

* Performing a fatigue calculation either on FE-results (at nodes, nodes of elements, elements) or at isolated points without any relation to the FE-model.

* Preparing the multiaxial solution, i.e. relating more simultaneous load channels.

* Loads given as load spectra, load histories, transient analysis (results from non-linear FE-calculation solved in more steps for a load sequence or prepared by sequencing of several result files)

* Accessing (viewing/editing) the input/output data of calculation directly inside the program.

* Filter for selection of data desired for viewing.

* PragTic can be used as a base for an implementation of other methods processing the FE-data (creep, limit states computation, FE-data check, etc.)

* Tools section producing details on FE-models topology, results, etc.

* Computation by many high-cycle fatigue methods (Findley, Papadopoulos, McDiarmid, Zenner & Liu, Crossland, Sines, etc.) and low-cycle methods (8 uniaxial ones, Wang-Brown, Socie et al. from the multiaxial methods).

* Unique solution by PCr method designed by myself concerning the computation towards the fatigue limit - check its interesting results in the FatLim Database.

* S-N curve based LESA method derived from the Eichlseder's gradient method and FKM guideline as implemented in FemFat.

* Control over the broad range of all the methods' parameters.

* Ability to run the computation by several different methods simultaneously.

* Preparation of new coordinate systems within PragTic, viewing of the most variables in selected coordinate systems

In case you find any bug, please, do not hesitate and contact me.

Description of boxes and windows

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