Author(s)

G.L. Balazs

Abstract

Deformation based fatigue failure criterion G.L. Balazs* Department of Reinforced Concrete Structures, Technical University of Budapest, H-1521, Hungary * Previously at Department of Materials Science, University of Stuttgart, D- 70550 Stuttgart, Germany ABSTRACT It was attempted to establish a deformation based fatigue failure criterion which is independent of the cyclic load history (level, frequency and sequence of load cycles). Based on the analysis and comparison of cyclic and static test results, it was recognaized that the acceleration of fatigue deformations prior to failure starts at the deformation caused by the highest applicable stress in a static test on the same type of specimen. That means, fatigue failure initiates at the deformation corresponding to the static strength. This criterion may serve to refine our material models in addition to predict fatigue failure. INTRODUCTION Repetitive stresses cause progressive damages in materals. The accumulation

Keywords