Impact analysis in Creo vs. explicit analysis

[mlindqvist]

Does anyone have any experience from doing impact analysis in Creo (i.e. modal/dynamic) vs. explicit analysis (i.e. LS Dyna etc) ?

Is there any point in trying to get some useful results, or should I just forget about it?

In this case it is a type of valve that closes "with a bang" as air pressure on one side of the valve disappears... Since there is contact involved, I guess it's no point trying in Creo.

/Mats L/

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[DenisJaunin]

Hello Mats,

I am attaching a link on the hammer if it can help.

Yes, shame simulate does not do.

Kind regards.

Denis.

http://www.maplesoft.com/applications/view.aspx?SID=129503

[mlindqvist]

Merci Denis,

In this case it is the mass of the valve plug itself that causes the impact, not the media, which is air.

/M

[sdensberger]

It really depends on whether the highly transient nature of the event results in any significant non-linear effects (for example, materials that are highly strain-rate dependent). Even then, I don't know how much weight I'd place behind the results; if your going at this from a trend point of view, then maybe.