nI haven't read page 514.8C-14 of MIL-STD-810H, but I expect it is an acceleration vibration profile for the truck frame. Why would you need to tailor this profile? Wouldn't you just use it, since you have no measured data?nA device frame is bolted to the truck frame. That device frame has a subframe that holds electronics, the subframe holds some electronics boards that are fragile.nI suggest you build a model of the device frame, subframe and electronic boards. Don't model the truck frame. The mass and stiffness of all these parts must be properly represented. Large pieces of hardware that are bolted to the device frame can be represented as a point mass. Build that model and run a Modal analysis and a Random Vibration analysis where you use the vibration profile. This will show the stress in the PCB boards.nn