Resumen

BORNIA, O; VOGT, J.B  y  LEON, J. B. Simulación de grietas cortas originadas por fatiga de bajo ciclaje en aceros 2Cr 1MoLOW CYCLE FATIGUE (LCF) SHORT CRACK SIMULATION OF 2.25Cr 1Mo STEELS. Rev. Fac. Ing. UCV [online]. 2006, vol.21, n.1, pp.13-20. ISSN 0798-4065.

The 2.25Cr 1Mo Steels have been studied in Low Cycle Fatigue (LCF) to high temperatures in a previous paper. Low Cycle Fatigue is characterized by a multiple cracking stage where conventional fracture mechanics do not reproduce kinetic short crack growth, thus providing a challenge in the area of simulation. A modification made to the kinetic equation proposed by Lankford¹⁰ and a LCF adaptation on Tomkins⁹ equation, allows us to reproduce the phenomenon to high temperatures in this type of steel before the macroscopic crack induces the failure of the material. In this work, the Low Cycle Fatigue is simulated based on damage knowledge and the statistical record of crack populations using the computational language JAVA (TM) 2SDK, V 1.4.2-001 as a platform. The simulator reproduces the multiple typical cracking in this type of steel under pseudo-random conditions, generating an approximation of 90 % to the experimental results.

Palabras clave : Low Cycle Fatigue; 2.25 Cr1Mo steels; computational language JAVA.