MODAL BLOCK FOR ADJUSTING NATURAL FREQUENCY OF VEHICLE SEAT

Vehicles, vehicle seat arrangements, and methods for manufacturing modal blocks for use with vehicle seats in vehicles are provided. A method for manufacturing a modal block for use with a vehicle seat in a vehicle includes identifying a frequency range of output frequencies of the vehicle; determining a natural frequency of the vehicle seat; designing a modal block configured to adjust the natural frequency of the vehicle seat; and locating the modal block between the vehicle and the vehicle seat to adjust the natural frequency of the vehicle seat.