Apply stress as input

[cvady]

Hello everyone,
Usually, the displacement or loads will be applied as boundary conditions to solve the problem. I would like to apply sigma_x+sima_y as input and solve the problem. Let us assume, sigma_x+sigma_y results are available from some another source like experiments over certain nodes. Then how can this stress information can be applied as input to Abaqus?

 

[FEA way]

I guess that you are actually talking about initial stresses. These can be applied using Predefined Fields.

 

[cvady]

Is it possible to apply sigma_x+sigma_y values, as the individual stress values like sigma_x and sigma_y are not available.

 

[FEA way]

When defining initial stress in Abaqus you have to specify individual components of the stress tensor (for example in case of 3D solid you define three normal and three shear stresses).