The Influence Of Fillet Rolling On Fatigue Strength
- Experiment And Calculation
Author(s)
R. Schaal, B. Kaiser, B. Pyttel & C. Berger
Abstract
The influence of fillet rolling on fatigue
strength - experiment and calculation
R. ~chaal', B. ~aiser', B. pytte12 & C. ~ e r ~ e r '
I SIEMENS AG, Miihlheim an der Ruhr, Germany
2 Institute of Materials Technology, Darmstadt University of Technology,
Germany
Abstract
Fillet rolling is a method that significantly improves the fatigue strength of
members. Residual compressive stresses induced in the surface layer during the
fillet rolling process are able to retard or prevent crack propagation. Large gains
in fatigue strength up to 200% can be acheved. A procedure was developed to
enable the fatigue strength calculation of fillet-rolled members. Two main topics
had to be considered: The application of the FEM to simulate the rolling process
and to calculate the residual stresses and the application of fracture mechanics to
assess the effect of the compressive residual stresses on crack propagation. The
influence of different process parameters can be investigated. After the
simulation of fille
Keywords
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