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Design Optimization of Mirror Post Assembly for Achieving Desired Natural Frequency

: The automobiles experience a lot of vibration which causes the mountings to vibrate. These vibrations may hamper the working of the parts. Mirrors are the mounting which is the most reliable source to check the rear sides of the vehicle. The rearview mirrors must have provided a stable view to the driver when driving. As it’s seen that from literature study, Mirrors tends to resonance at low excitation frequency because of vibration coming from engine and road conditions thus it is necessary that design should be robust to avoid resonance. To study the vibrations, finite element method and experimental approaches are the only approaches for complex shapes. The finite element analysis method provides helps in determining the natural frequencies and mode shapes. In this study, we perform modal analysis of rear-view mirror post assembly using Ansys to check the natural frequency at where resonance problem occurs, which effects on the performance of a mirror and made the design optimization by finding 4 iterations. Selection of optimize iteration done on the basis of targeted natural frequency which has achieved the desired goal of a project that is sharp reflected images from the mirror the online performance of prediction algorithm is shown. The mean and time-varying characteristics of the vibration signal are measured by Auto-Regressive-Integrated-Moving-Average model. Experimentation was first done to measure the Vibration threshold of human