Mass Variation Techniques for Damping the Resonance Effect

Abstract Purpose Studying the system’s natural frequencies is crucial to prevent resonance phenomena that can harm both the system and the people around it. Resonance can occur when the system is excited by an applied forced frequency that coincides with the system’s natural frequency. Therefore, it is important to avoid running the system at a frequency equal to or close to one of its natural frequencies. However, it is not always possible to have control of the excitation or the applied frequency to avoid matching the system’s natural frequencies. Methods The current article examines two developed techniques, namely the electromagnet-based technique and the water-based technique, for altering the system’s natural frequency through mass variation. The electromagnet-based technique is also used with the Tuned Mass Damper TMD, which can be applied for the same purpose. Results Dynamic modelling is presented, and the amplitude ratios are calculated. Experimental tests are conducted to prove the techniques’ applicability. The presented methods demonstrate the potential for avoiding resonance through natural frequency variation, thereby enhancing the safety and reliability of the operating system. Conclusion The presented methods show the possibility of avoiding resonance via natural frequency. The applied techniques are compared, and their applications are discussed in terms of response and solution applicability.