The Fatigue Lounge is understood as a place, where pieces of information
concerning fatigue, fatigue analysis, fatigue events, fatigue postprocessors are provided. The events
managed by me, however, are located in the section Events, lectures.
PragTic Freeware Project
|PragTic project is aimed at development of a freeware tool for an automated
fatigue damage calculation based on a FE-solution or done at an isolated point with no relation to FEA.
It started as a programming work intended to support the preparation of my PhD
thesis. After completion of the thesis, the
PragTic software remained in a state, which showed its
possible highly efficient use, but also how many further improvements have to be
done. Since I did not want to leave the program as is and let it be forgotten
in two years, I tried to find ways to continue in its development.
I would not spend so long time if I had not been persuaded that there are some substantial
reasons for this my activity. Some of them can be found on Concept page or in the analysis available in this pdf file.
It should be highlighted here, that the development of PragTic SW was forcedly abandoned in 2015. What you
can find here cannot be further modified under given circumstances.
|The use of PragTic allowed me generation of a vast amount of data that can
help others to understand limits of current multiaxial high-cycle methods.
The data are saved within a MySQL database FatLim,
which in conjuction with the PhP language allows presentation of data in a quite
I do not know about any such a broad analysis of this problem and the results are apparently
quite worse than those usually reported in research papers. It seems that the activity of researchers
is too often impeded by two facts: (1) unavailability of some fatigue solver that would allow fast
implementation of new methods and their efficient and quick testing (PragTic solves
this problem nicely); (2) unavailability of experimental data for testing of new proposals.
The end of PragTic development mentioned above caused some mess also in this section. Remnants of the previous activity
can be found in the Database section.
This section is further populated by some data items related to our publications.
|All my previous experience gained while building PragTic and various fatigue databases taught me one:
It is extremely difficult to find enough statistically representative fatigue data that can be
used to build up the benchmark data sets, on which the various fatigue calculation methods could be validated.
This constrains many PhD studies in the quality of validation, or it extends the time necessary to collect enough experimental outputs.
Surprisingly, it is even more complicated to apply such benchmarks to existing fatigue solvers and to deliver
the results to public. FABER project responds to it.
Development in 2011-2014 supported by: