Effects of cyclic loading on the mechanical properties of a granite

- Fatigue behavior of Alvand monzogranite was studied.
- Maximum stress level and frequency influenced fatigue behavior more than amplitude.
- Fatigue life increased with increasing frequency and decreasing maximum stress levels.
- Lateral and axial strain and secant modulus damage parameters showed the best fatigue process.
- Toughness and hysteresis energy variation show a short decreasing trend phase, dominated uniform increasing phase and short rapid increasing phase.