Abaqus results

[mambo5]

Does Abaqus tell us when is the section will failed? i.e in a simple I-beam modeling, I apply a load say 100kN, supposed the beam will failed at 70kN, so does Abaqus tell (or give warnings or errors) if the load increment (using stel module) has reached 70kN (or over) and the "beam is failed, analysis will stop"? from where can i get those warnings? is that from *.msg file or *.dat file?

 

[bassmanjax]

In a word, no. It's your job as the analyst to interpret the results and decide whether the model has exceeded some critical limit, be it a load or stress component.

Regards

Martin Stokes CEng MIMechE

 

[corus]

There is a failure criteria card you can use, but I've never used that to be honest.
If your model goes plastic or buckles at some point then you'll notice displacements increasing rapidly and the job won't converge. You can estimate the asymptote at which the structure fails by plotting the displacements against your applied load to estimate the proportion of the applied load that caused failure.
If you've just got a simple beam model and elastic stresses then you'll have to learn yourself at which stress intensity, or stress component, or principal stress will exceed whatever the design code limit is for that particular application.

corus

 

[gurmeet2003]

mambo5,

Generally ABAQUS will calculate stresses and deformations
for you, given a certain set of loads and boundary conditions. You have to decide what the failure criteria is for your beam. Generally people use either maximum principal stress or Von Mises stress as a failure criteria, and then apply a factor of safety. Factor of safeties of 2, 2.5 are common depending on application. Sometimes codes specify the factors of safety.

Similarly maximum deformation of the beam could also be a failure criterian.

Gurmeet