I have a system that is pretty much a chamber that needs to sit on the ground. I measured the transmissibility of the chamber vs the ground (output/chamber acceleration over input/ground acceleration) with accelerometers and plotted a transmissibility graph (is it also called transfer function plot...?). The steel chamber weighs about 100 kg.
From the graph, I found the natural frequencies (the spiking frequencies). Let's say I would like to reduce the vibration of the 3.2 Hz and 9 Hz vibration, what would be the real world approach to isolate this vibration as an mechanical engineer? Do they buy a specific set of materials online according to the natural frequency and then pad them under the system? Or do they come up with a spring + damper system that target these frequencies?