CATIA Generative Structural Analysis Stress Values
CATIA Generative Structural Analysis Stress Values
(OP)
Hello. I have run some models in CATIA and I am getting stress values that are slightly lower than expected. I am getting about 3.8 ksi for the stress at an open hole and the value should be about 4.7 ksi based on the geometry and loading conditions. I confirmed this in ABAQUS and Peteron. I am wondering if anyone might have any idea as to what is causing this low stress value. Thanks.





RE: CATIA Generative Structural Analysis Stress Values
Based on the "look" of the fringe plot, discretization (too coarse of a mesh) could be your problem. Is the solver and h-element or p-element? Can you change to higher order elements if it is an h-element solver. If it is a p-element solver, make sure your convergence controls are set appropriately.
Please specify the type of solver, mesh density (perhaps via plot), element type/order.
Brian
www.espcomposites.com
RE: CATIA Generative Structural Analysis Stress Values
RE: CATIA Generative Structural Analysis Stress Values
The icon looks like a magnifying glass with a stress contour on it. Once you set up the global adaptivity objectives, you can set local ones by right clicking on the adaptivity in the tree. "Compute with adaptivity" is hidden under the compute button. Other options like min mesh size can be set once you click it.
John
www.AtlanticCoastAerospace.com