Order of Beam 1D Elements using Radioss?

Autumn

Hello,

I am interested in knowing whether or not it is possible to specify the order (1st, 2nd, etc) of a 1D beam element for use with Radioss. I have looked at the Theory Manual for Radioss and it suggests that only bar2 elements can be created (which I gather are linear beam elements). The User Guide for Hypermesh does indicate there are bar3 elements available (2nd order type) and I assume that it is Radioss then that does not support this type (I can't seem to create a bar3 in Hypermesh when the User Profile is set to Radioss). So I am wondering if this is indeed the case - does Radioss not support a higher-order 1D beam element? Or is there another way to model a higher order 1D element?

Thank you in advance for any information you're able to provide and please let me know if you need any clarification.

Simon Križnik

Hi,

as far as I know, Radioss currently supports only second-order solid elements.

There are two types of mesh convergence (h- and p-refinement). H-refinement relates to the reduction in the element sizes, while p-refinement relates to increasing the order of the element. Since higher-order elements are not available, refining the mesh size is the only option.