Fluid structure interface finite element analysis
 

Hello Guys,
I want to do a finite element analysis of a accelerometer based balance system where it is subjected to Mach 5.75 flow.
So I wanted to know, should I use ansys explicit dynamics or some other software like LS DYNA. I am really confused because according to the literature it involves fluid structure interface and the only boundary condition that I have is Mach 5.75.:confused: