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Table 3 Calibrated models of low cycle fatigue based on total strain amplitude for multiple slenderness ratios.

From: High-Strength Reinforcing Steel Bars: Low Cycle Fatigue Behavior Using RGB Methodology

Reinforcement grade Slenderness ratio L/d Equation \(R^{2}\)
80 (550) 5 \(\epsilon _{a}=0.171(2N_{f})^{-0.497}\) 0.998
10 \(\epsilon _{a}=0.127(2N_{f})^{-0.490}\) 0.998
15 \(\epsilon _{a}=0.148(2N_{f})^{-0.573}\) 0.990