Abstract
Vibrations are undesired phenomenon and it can cause harm, distress and unsettling influence to the systems or structures, for example, aircraft, automobile, machinery and building. One of the approach to limit this vibration by introducing passive vibration absorber attached to the structure. In this paper, the adequacy of utilizing passive vibration absorbers are investigated. The vibration absorber system is designed to minimize the vibration of a thin plate fixed along edges. The plate's vibration characteristics, such as, natural frequency and mode shape are determined using three techniques: theoretical equations, finite element (FE) analysis and experiment. The results demonstrate that the first four natural frequencies of fixed-fixed ends plate are 48, 121, 193 and 242 Hz, and these results are corroborated well with theoretical, FE simulation and experiment. The experiment work is further carried out with attached single and multiple vibration absorbers onto plate by tuning the absorber's frequency to match with the excitation frequency. The outcomes depict that multiple vibration absorbers are more viable in lessening the global structural vibration.
Highlights
Excessive vibration in engineering systems are generally undesirable, and avoided for the purpose of safety and solace
The standard solution to solve this vibration issue is to redesign and modify the system, which is done by combination of increasing the thickness of the panel wall, stiffening the structure, and adding damping [4,5]
Numerous studies have been devoted to develop a feasible method to reduce vibration that generated by machines [6,7]
Summary
Excessive vibration in engineering systems are generally undesirable, and avoided for the purpose of safety and solace. The standard solution to solve this vibration issue is to redesign and modify the system, which is done by combination of increasing the thickness of the panel wall, stiffening the structure, and adding damping [4,5]. Numerous studies have been devoted to develop a feasible method to reduce vibration that generated by machines [6,7]. These include: (i) modifying the framework, so the natural frequency does not coincide with the operating speed, (ii) apply damping to counteract large response, (iii) installing isolating devices between adjacent sub-systems and (iv) adding discrete masses into equipment to reduce the response and retain vibration
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