Applying the different hardening models in Abaqus is a little bit tricky and challenging. It needs some basic engineering knowledge. This video provides basic knowledge of this field briefly and comprehensively. Thank you so much.
thank you for your tutorial video. in case if you want to use any types of ductile damage , to what extent we should enter the plastic behavior of material? is it up to UTS ? or we can extrapolate it up to 200% as the model meets the necking so much....
hi. you are welcome. you must always define the plastic behavior up to UTS. if you also define damage behavior, after the plastic zone, the material undergoes damage zone. if you do not define damage behavior, it will shows a perfect plastic behavior and PEEQ will increase without the increase of the Mises stress.
@@FemexIran Thank you very much for your respond. I’m still wondered if damage behaviour is not applied on the model,why do we need to Use work hardening after necking? I mean work hardening will increase so that means the simulation is somehow wrong. Furthermore, do you mean we should not extrapolate hardening behaviore after UTS if the damage behaviour is defined?
@@sianourani1042 you are welcome. if the damage behavior is not defined, after reaching to the ultimate point of the plastic behavior, the simulation is not correct anymore. because after that point, material has a perfect plastic behavior and there is no work hardening because the Mises stress will not increase. the last point in the definition of plastic zone must be the ultimate point.
@@FemexIran yep this is what I expected too, but I have seen through Numerous papers that The work hardening has been extrapolated up to 200%… specially wherever the necking happens!!!
@@sianourani1042 I have not seen such definition of plastic zone before. it is not correct. as I said before, as the maximum defined Mises stress is the ultimate stress, after reaching this point, no hardening occurs and material undergoes a perfect plastic behavior. what I say and what I do is according to the Abaqus documentation that is the most correct reference in the world about the use of Abaqus.
Applying the different hardening models in Abaqus is a little bit tricky and challenging. It needs some basic engineering knowledge. This video provides basic knowledge of this field briefly and comprehensively. Thank you so much.
Hi.
You are welcome.
Thank you for the content and nice explanations
you are welcome.
thank you for your tutorial video. in case if you want to use any types of ductile damage , to what extent we should enter the plastic behavior of material? is it up to UTS ? or we can extrapolate it up to 200% as the model meets the necking so much....
hi.
you are welcome.
you must always define the plastic behavior up to UTS. if you also define damage behavior, after the plastic zone, the material undergoes damage zone. if you do not define damage behavior, it will shows a perfect plastic behavior and PEEQ will increase without the increase of the Mises stress.
@@FemexIran Thank you very much for your respond.
I’m still wondered if damage behaviour is not applied on the model,why do we need to Use work hardening after necking? I mean work hardening will increase so that means the simulation is somehow wrong. Furthermore, do you mean we should not extrapolate hardening behaviore after UTS if the damage behaviour is defined?
@@sianourani1042 you are welcome.
if the damage behavior is not defined, after reaching to the ultimate point of the plastic behavior, the simulation is not correct anymore. because after that point, material has a perfect plastic behavior and there is no work hardening because the Mises stress will not increase. the last point in the definition of plastic zone must be the ultimate point.
@@FemexIran yep this is what I expected too, but I have seen through Numerous papers that The work hardening has been extrapolated up to 200%… specially wherever the necking happens!!!
@@sianourani1042 I have not seen such definition of plastic zone before. it is not correct. as I said before, as the maximum defined Mises stress is the ultimate stress, after reaching this point, no hardening occurs and material undergoes a perfect plastic behavior. what I say and what I do is according to the Abaqus documentation that is the most correct reference in the world about the use of Abaqus.
please make a tutorial on the combined hardening model
hi.
thank you so much for your suggestion.
I will do it in the future.
thank you
you are welcome.
Nice.