We present a simplified method to calculate the plastic ratchet when an elbow is submitted to a seismic input. The method is simplified in the sense that it gives the value of the ratchet without a F.E.M calculation. We obtain a formula and we use it to evaluate the fatigue-ratcheting damage of the elbow. Our simulation is available for complex plastic behavior with non linear kinematic hardening. It is well known that this behavior is more realistic for 316L stainless steel.
展开▼
