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Modal shakers are used to study the vibration behavior of structures. No specimen is mounted on these shakers. These shakers are attached to the structure with a stinger and the force is transferred from the shaker to the structure via this stinger. The structure under test and/or the modal shaker can be suspended during the test using components such as an elastic rope or spring to simulate free-free boundary conditions. In this way it is possible to excite the specimen at different frequencies. As a result, the natural frequencies and mode shapes of the structure can be calculated from the vibration values measured over the structure.
Modal testing can be performed using modal hammers or shakers. If high frequency excitation or signal controlled testing is required, modal shakers are the only excitation solution. Dynalabs modal shakers are lightweight and powerful modal shakers capable of up to 12,000 Hz and force levels up to 440N with a maximum stroke of 25mm.


Dynalabs modal shakers cover a wide range of structures for dynamic characterization. The output force of the modal shaker can reach up to 440N and an excitation frequency of 12,000 Hz can be achieved. The following chart summarizes the application ranges of the modal shakers. The size and weight of the structure are the main factors in selecting the appropriate shaker. However, for localized testing, small shakers such as the MS-20 can be used in any structure.