Verification of Stress Components Determined by Experimental Methods Using Airy Stress Function

Contribution to Structural Optimising Subjected to Cumulative Fatigue Damage

“…Considering mean stress σ m modified version of the stress amplitude (using Goodman, Soderberg, Geber), eq. 2 can be rewritten as follows [16,17] ( )…”

“…If k=1 and R F =R E (yield stress) the Soderberg´s model is used, if k=1 and R F =R M (strength limit) the Goodman´s model is used and if k=2 and R F =R M the Geber´s model is used. Using the linear Palmgren-Miner law we can calculate fatigue damage for stress amplitude σ Aj as follows [16]…”

Application of Karray-Bouc Hysteretic Model for Cumulative Damage Calculation Using Energy Fatigue Curve

“…Generally, a lot of engineering structure components usually undergo a non-proportional and multiaxial loading. The application of the cyclic σ-ε tensor response under the multiaxial loading, which depends on the loading-path, is very difficult [2,5,11]. Several researchers have proposed uniaxial and multiaxial fatigue criteria based on an energy evaluation [7,12].…”