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Yes, i understand what is your points and methods. I am wondering the methods to iterate my material strsss-strain curve instead of guessing? Manually adjust? If I am using my script.

Thanks so much. Any specific link to the post? The difficulty is I can not know the cross section area as the testing sample is an irregular shape. Manually guess the stress-strain which not idea. Need some guidance here. If I had a start date for stress strain. How can I iterate this curve to...

The problem is the cross section area is irregular shape which can not be extracted.

Hi guys. Does anyone have good advice or methods for material calibration. Like I have an unknown material, I had a compression test and the output is a force displacement curve, and I need to came up a an stress-strain for this unknown material. Does anyone have good experience for this task...

Hello all I am wondering if I am able to add initial strain in ABAQUS? I know I can use initial stress from predefined field. How about initial strain? Can I do that in ABAQUS? any work around? Thanks Lee

@FEA_way. I have try frequency=1, it's perform the same as above. could you please let me know what else I can check for?

Any idea of this?

here is the imagehttps://files.engineering.com/getfile.aspx?folder=4ff73583-497e-4894-8ed4-a5b19b5cc1b5&file=Mass_scaling.png

Hey guys, I have a quick question about mass scaling. In my current model I have applied semi-automatic mass scaling to a target time increment to 8e-7. However, looks like it's not working at all at where the time increment start to decrease. As you can see the attached image, the percentage...

@ SWComposites, that because of I am doing peel test, I have no input of the load and I will need to peel one layer of material up to certain distance.

Sorry not very sure what you explained but thanks for your input and help. I have attached a picture for your reference, the only task I would like to attach is move the peel arm in a distant in certain angle of...

Thank for you input @FEA way. The problem is I need to ref nodes to move in certain displacement at a fixed angle, not only to rotate it. Think about a peel test, I would like to grab one edge of the peel arm and peel it at 45 degree direction in 30 mm? Thanks again for your help. Regards lee

Hello all, I am a basic question for applying a displacement B.C. in ABAQUS. Do you guys have any idea about how to apply a displacement B.Cs on a reference node that allow the object to move in 45 degree or certain angle? for example, when I do peeling test, can I can pull the peel edge in a...

@FEAway. Thanks l, will look at the paper

@SWComposites Thanks for your inputs. May I ask if you have any such examples? Thanks again.

and also my I ask can cohesive element fail in shear or tangent direction?

So do you think I can use XFEM and cohesive element together?

@ FEA way. No, please see the attach for your reference. I would like modeling the adhesive as well as cohesive. anyway we can do it in abaqus? https://files.engineering.com/getfile.aspx?folder=e659653a-81a3-4d48-ad3b-e61c33949d1a&file=adhesive_vs_cohesive.png

Hello ABAQUS users, I am trying to modeling the adhesive vs cohesive in a a peel test. I am wondering is anyway that I can use cohesive contact of top of cohesive element? I am trying to understand the adhesive failure at the the interface vs cohesive failure in the cohesive layer. please help...

Thanks so much @FEAway