SP3D converter or explosion simulation software
 

I have a problem here and hopefully someone can help me. I use FLACS to do our dispersion/explosion simulation. I'm running into a problem when I'm trying to import a geometry. The geometry is in SP3D format but can be export to dgn. However it has B-Spline elements in it, so FLACS cannot read dgn file in. So my two questions are:

1. Anyone knows how can I convert a SP3D file to dgn without the B-Spline elements? I have to use dgn format or else FLACS can't import it.

2. Is there other explosion software out there that can read SP3D format geometry?

Thanks in advance.