Vibration Isolation Mount Design Calculator

The Vibration Isolation Mount Design Calculator is a free online engineering tool that back-calculates required mount stiffness from equipment mass and excitation frequency. It addresses the need to reduce vibration transmission from machinery such as motors to supporting structures by providing immediate calculations of transmissibility and related metrics.

It computes vibration transmissibility, insertion loss, and static deflection in real time. An animation visualizes the transmissibility curve and highlights the danger zone near resonance where isolation becomes ineffective or amplification occurs. Users adjust parameters including equipment mass in kilograms, excitation frequency in hertz, target natural frequency, damping ratio, and number of mounts. The tool then displays transmissibility as a dimensionless value, insertion loss in decibels, natural frequency in hertz, total stiffness and per-mount stiffness in newtons per millimeter, static deflection in millimeters, frequency ratio, and load per mount in newtons per unit. Design guidelines note that isolation becomes effective above a frequency ratio of approximately 1.41, with typical designs targeting a ratio of 3 to 5 and higher ratios recommended for precision equipment.

The calculator is delivered as a web-based application with interactive sliders that update results instantly. It includes an animation that can be paused to allow manual adjustment of values. Damping ratio defaults reference typical ranges for materials such as natural rubber and viscoelastic compounds. The page is hosted by NovaSolver and is accessible without charge.