RADIOSS or LS-Dyna?

[RGX124]

Hi,
I am a new comer in Dynamics. In my lab, we are using mainly Abaqus Standard and Explicit and sometimes ANSYS. We are advanced users of ABAQUS (UMAT,VUMAT, Python scripts). For dynamical problems where fluid/structure interaction are needed, I'd like to have your opinions about RADIOSS (Hyperworks) and LS-Dyna. I am testing LS dyna now and will test soon Radioss.
According to your experience, what is the BEST software between those two softwares, to perform dynamic impact simulation, dynamic fracture and manage fluid/structure contact? Which one offers the best ergonomy for users?
Thks for your help.
rgx124

 

[Drej]

I'm aware of RADIOSS but never used it personally, but I can certainly vouch for LS-DYNA. It's considered - quite rightly - the "industry leader" for dynamics/impact and there is probably nothing more to say about that. It also has an excellent FSI capability which our company has used to benchmark (specifically for FSI) against other codes such as ABAQUS - ABAQUS in this respect faired ok but the company went with DYNA in the end. It was the right decision in my opinion. I'd have to understand your specific application/s to give an authoritative "tick in the box" but as I say DYNA has an excellent capability for the apps you mention. It offers a whole host of FSI capability including DAA (gen + overlay) and the all-singing-all-dancing CASE fluid representation. It also has EOS capability as well as ALE but is still yet to offer a CEL capability (ABAQUS does). Nevertheless, it is very good.


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