There is, and it tends to be expensive for the hobbiest. I have simple simulation programs and they cost several hundred to a couple thousand dollars, plus an annual maintenance fee in the 10-20% of the original purchase price. The thing is - the more complete and automatic you would like it, the more background programming is necessary, such that the most automated and simple programs often cost the most (i.e. - they allow less skilled users to produce more complete output).
OTOH, I assume structural analysis programs like NASTRAN, as well as programs in similar fields, have open source or free as in beer versions out there. It's brace and bit or hand file vs CNC machining/3D printing, but you can get just as good results (possibly even better) with enough know-how and effort. But time is money, as they say, so you decide which time is valuable and which is not.