Review of an Effective Dynamic Vibration Absorber for a Simply Supported Beam and Parametric Optimization to Reduce Vibration Amplitude
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 7
Abstract
In this work theoretical natural frequencies and mode shape of the simply supported beam type main vibrating system ie used in many areas like bridges and double-beam structures is determined. Dynamic vibration absorber is designed and developed at one of the resonant frequencies of the main vibrating system. Natural frequencies and mode shapes of main vibrating system obtained theoretically and also by using FEA analysis. The system considered is essentially a modification of the conventional damped vibration absorber and consists of adding, in parallel, a subsidiary undamped absorber mass in addition to the damped absorber mass. Uses MATLAB to find optimize parameter to reduce the vibration amplitude. Also use ANSYS for FEA analysis of simply supported beam type main vibrating system. Development to test the performance of a damped and undamped vibration absorber for the simply supported beam type main system. The analysis clearly shows that it is possible to obtain an undamped antiresonance in a dynamic absorber system which exhibits a well-damped resonance. While the bandwidth of frequencies between the damped peaks is not significantly increased, the amplitudes of the main mass are considerably smaller within the operational range of the absorber. A total of 4 models are taken for consideration for the damped vibration absorber. By comparing in between those models, we came to know that model (C) gives better vibration suppression and also required less damping ratio for anti resonance.
Authors and Affiliations
S Pani, S. K Senapati, K. C Patra, P Nath
Keywords
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