Learning Forum

[449055]

Dear Ansys learning community,

I am currently working on a project for which I have to design (and validate) a hostile vehicle barrier. In order to validate my designs numerically I want to use LS dyna to simulate a vehicle impact to said barrier. The main reason for me to use LS-dyna is because the European agency has generic vehicle models I can use which have been independently verified. These models are supplied as K files and have an element count of approximatly 150k nodes. However, as I was looking into the possibilities of Ansys LS-dyna (student license) I noticed the maximum problem size consists of 128k nodes/elements.

My question is thus about how this limit is set. Is this problem limit only for running a simulation or ís it also applied in the pre/post environment? If this limit is only for the solver itself I should (technically) still be able to use LS-dyna pre/post in combination with OpenRadios (opensource K-file solver). Can I use LS dyna pre/post if the problem size exceeds 128k elements or will it cut me off while setting up?

I look forward to your responses.

 

[Nanda]

Hello User,

The limit is set while the solver gets initiated, that's why students will encounter the error as soon the run button is clicked. LS-PrePost doesn't have any limit on number of nodes or elements. So, I don't see an issue with your planned approach.

Let me know if this doesn't help.

Regards,

Nanda.

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