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Is there any benchmark for a elasto-platic material or even a Hyperelstic material.

It will be interesting to see accurancy which this two material models with real or even software comparation study (mechanical-ansys or mechanical abaqus etc..)

Could be possible from somebody in PTC to give me an anwser about it?.

-Let see how many in PTC gives an anwser about it..---


Re: Mechanica..Elasto-plastic

it appears PTC aren't part of this community

Re: Mechanica..Elasto-plastic


I do not know the answer. But for PTC; maybe have some patiens till the normal workweek begins for them. They seem to answer when no-one else knows the answer.



Re: Mechanica..Elasto-plastic


Here's a presentation on analyses with Hyper-elastic materials in Mechanica. I hope you will find it useful. We don't have anything similar for elasto-plastic materials yet.



Christos Katsis, Ph.D.

Vice President, R&D - Simulation Products


2665 North First Street, Suite 110

San Jose, CA 95134



Re: Mechanica..Elasto-plastic

Hello Christos

Thanks for the pdf, but I already had it (in fact is the only material about Hyper-elastic that PTC as issued, I believe)

Basically I am looking something similar to that document, but for Elasto-plastic plus a benchmark with a lab test if possible, I don't find really useful the helping WF5 for this last point, there is not much information ( I thing is because it could be quite early due to the recent launch of WF5, but as well we are already in M050!!! and still not info).

I really will appreciate if you can find for me something similar, (and even better with a benchmark to evaluate this new material model in WF5). I have been waiting for the version since quite long time (elasto-plastic), and now I am in appoint to decide if we move from FEA software or not, (there are others ones with such capabilities but the cost are more expensive and even some of those software are over dimensioned for what I need, so decision need to be taken in a cost/value point of view.

That is why I need more info about this new material model in WF5.

P.d: Is there any intention to include a basic material data base for hyper-elastic and elasto-plastic (common rubber , plastics and some metals) in WF5 in future cuttings (let say M100), so people can perform analysis with them), That is something that other competitive software companies have includes in their programs.

I really will appreciate if you can find something for me, and I will be happy if you can give your opinion about this last point.

Napoleon Motaban

Msc. Mechanical Engineer.

Re: Mechanica..Elasto-plastic

Hi Napoleon,

Unfortunately, we haven't created yet a similar document for elasto-plastic analyses in Mechanica. It is in our plans, but at this point, I cannot commit to a date when such a document will become available.

Regarding hyper-elastic and elasto-plastic material properties in Mechanica, most users use properties that they have obtained through lab experiments or by access to available material databases, e.g. MatWeb. But you make a good point. We will consider including a few common hyper-elastic and elasto-plastic materials in the Mechanica database in a future release.



Re: Mechanica..Elasto-plastic

Thank for your replay Christos

Is still hard to belive that there is not a benchmark for elasto plastic done by PTC

how can be possible to release a software whithout knowing what sort of results you can get.?

I don't want to be critic ( I am really happy with my PTC products) but not having a bechmark to compare

the software accuracy it sound hard to belive,

I still think it should be something in PTC to deal with this point...(for sure somebody in the development team have done something)

P.d:I will apreciate if PTC will include some hyperelatic and elasto-plastic material in the future cuts of WF5

that will be really usefull.

Thanks for your help.

Re: Mechanica..Elasto-plastic

Any documentation come out on elasto-plastic analysis yet ?

Re: Mechanica..Elasto-plastic


Can we find an answer to this discussion.

Examples of material are they created and made available to an address.

Interested in this topic for a long time.



Re: Mechanica..Elasto-plastic

Hello Christos,

claims to allow:

  • Ability to include plasticity, hyper-elasticity and contact effects in the same analysis

This implies plasticity in assembly with contacts, yet the plasticity option is greayed out for me. I have one part with elastoplastic properties defined of a two part assembly .

I am running Creo 2.0 M070. Am I missing something? Is thisindeed available?

Thank you,

Randy Speed