Latest Improvements in FEMFAT to Simulate Reality
Axel Werkhausen, MagnaPowertrain
Fatigue analysis has many famous founders – engineers
with industrial/practical background like August Wöhler
or Milton Miner, and also theoretical specialists working
in laboratories and universities like Prof. Harald Zenner,
Prof. Erwin Haibach, Prof. Huseyin Sehitoglu – to list
some living persons, too.
The software FEMFAT combines both – the theoretical
approaches and investigations from cooperation with universities
and practical know how from physical tests in the fatigue
laboratory in ECS from projects in automotive, railway and
other mechanical problems.
So to consider new aspects for reduced or improved life of
components made from iron, steel, aluminium, sinter or fibre
reinforced plastics (more to come) the software uses an inverse
approach of german FKM guideline. This guideline enables engineers
with fatigue problems to judge a specific location in their
component by aspects of surface roughness (-), surface treatments
(+), ambient temperature (-), testing intervalls,… on
material curves – all collected and summarized in a
manual with a step by step to dispense.
The software FEMFAT utilizes these approaches and adds some
investigated effects for production processes
like mold casting of fibre reinforced plastics; nearly pore
free boundary layers
on cast iron parts; secondary dendrite arm
spacing (SDAS) from aluminium castings; Neuber corrections
for linear elastic
stress results to be accessable.
The interfirm cooperation with european OEMs and our customers
worldwide improves the software day by day.
The capabilities of actual version 4.7 (4.8 is defined to
be released with
November 2009) can be reviewed at www.femfat.com.
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