1: In the Simulation fatigue module, how can you simulate a bending stress alternating about a preload stress? The stress cycle would vary from preload minus onehalf bending to preload plus onehalf bending? The mean stress is the stress from preload. The alternation stress is the bending stress.
In Simulation Release 10.0, you can you simulate a stress cycle that varies from preload minus onehalf bending to preload plus onehalf bending by creating two environments. Environment 1 = preload + 1/2 bending Environment 2 = preload  1/2 bending You then need to specify the coefficients for each case to be one in the solution combination folder. Mean Stress = .5*(E1 + E2) = .5*(preload  1/2B + preload + 1/2B) = Preload Stress Alternating Stress = .5*(E1  E2) = .5*(preload + 1/2B  preload + 1/2B) = Bending Stress 

