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Hi all, Lets say, I have 2 load cases, LC1 and LC2. For LC1, the principal stresses are S11,S12,S13. For LC2, the principal stresses are S21,S22,S23. To calculate mean and alternating stresses. If S11>S21, then mean = (S11+S23)/2; Alternating stress = (S11-S23)/2. If S11<S21,then mean =...

Drej, Thanks for the clarification.

Drej, Thank you for the reply. I want to add the normal stresses for different load cases, not the principal stresses as I stated in my first post. what do you mean by "The supports must be the same between Environments for the results to be valid. Only the loading can change to allow for...

Hi FArias, I think the solution combination doesnt give the algebraic summation of the values. Can you please confirm it. Thanks

Hi all, I have two load cases, LC1 and LC2 that have different loading conditions. I want to add stress values of LC1 and LC2. For example: Let S11, S12, S13 are principal stresses of node 1 for LC1 and S21,S22,S23 are principal stresses of node 1 for LC2. I want to get the summation values...

Hi all, Thank you very much for the input.As gwolf suggested we reduced our mean values by 2 sigma and applied modifying factors. We were able to resolve the issue. Thanks once again

Hello Everyone, We make the castings using our own material.we performed RR moore rotating beam test and found the endurance limits through curve fitting of S-N curve. Do we have to use modifying factors to further reduce the endurance values? What is the general procedure to accept a new...

Drej - Thanks alot for responding! I have a cross-ply symmetric laminate with 8 plies. Laminate width I have taken is 1.5 in. with the thickness of each lamina as 0.005 in.(0.0127 cm). I have calculated the elastic constants using the rule of mixtures. Using this info and properties for a...

Hi, I am trying to model a composite beam using Ansys. I wanted to know how to incorporate Residual Strains using Ansys? I have tried but in vain. If someone knows a method of incorporating residual strains or stresses for a composite beam using Ansys, the response will be of immense help. Thanks!