Mechanical Vibrations: Modeling and Measurement


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Giovagnoni A method for modeling of three-dimensional flexible mechanisms based on an Equivalent Rigid Link System Journal of Vibration and Control, vol.

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Giovagnoni, A. Moosavi, R. Boscariol, V. Zanotto Design of a controller for trajectory tracking for compliant mechanisms with effective vibration suppression Robotica, Volume 30, pp. Vidoni Design and implementation of a simulator for 3D flexible-link serial robots Proc. Gregoratti, A. Goldoni, O.


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Tormen, G. Grenci, S. Dalzilio, R. Gasparetto, V. Zanotto Simultaneous position and vibration control system for flexible link mechanisms Meccanica, vol. XI-1 pp.

Mechanical Vibration

Giovagnoni and P. Boscariol A novel 3D equivalent rigid link system approach for flexible-link mechanisms: formulation and comparison with the floating frame of reference approach Proc. Giovagnoni, P. P Boscariol Sistema meccatronico intelligente per meccanismi flessibili Proc. Richiedei D. Boscariol, P. Gasparetto, A.

Zanotto, V. Lanzutti, R. Vidoni, V. Caracciolo R. Alessandro Gasparetto and Vanni Zanotto Vibration reduction in a flexible-link mechanism through synthesis of an optimal controller Meccanica, Volume 41, Number 6, December , pp. Filippi, A. Caracciolo, D. Trevisani and V.

Zanotto Robust mixed-norm position and vibration control of flexible link mechanisms Mechatronics, Volume 15, Issue 7, September , Pages Trevisani e M.

Vibration Measurements

Gallina e A. Caracciolo, A. Biason, A. Trevisani, and V. Die Aufgabe: Finding versatile, portable, and affordable instrumentation for students who need to take hands-on measurements for a variety of projects in the lab and in real-world environments for mechanical engineering undergraduate and advanced mechanical vibration courses. Peak magnitudes occurred at approximately 0.

Mechanical Vibrations : Modeling and Measurement - neyholfitalsla.gq

A literature study by the students revealed vibration frequencies between approximately 2 and 8 Hz can cause immediate and long-term harm to the human body and nervous system, the peak at 0. Students found the average steady-state magnitudes occurring at 0. As a result, the students concluded that subway vibrations will unlikely adversely affect passengers.

Based on their preliminary findings, they also determined that location within the subway car has little or no effect on vibrations felt by passengers. The project gave the students the opportunity to learn digital signal processing, the ability to see the implications of collecting random vibration data, and the chance to interact with a NYC Metropolitian Transportation Authority MTA engineer who confirmed the consistency of their findings. Figure 1: Students measured acceleration at various locations on the No.


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Students performed impact modal analysis on two 20 in. They used two different support structures in the analysis — a PVC structure with elastic bands and a conventional cymbal stand. The student used the data collected to derive four frequency response function rows, one for each combination of cymbal and support structure. The input was an impulse, delivered and tracked via a PCB C03 impact hammer with a hard plastic tip; the output was an acceleration signal, measured via a PCB AC65 piezoelectric accelerometer.

The experimental results showed that the fundamental frequencies for the K Ride and the K Constantinople cymbals were 31 and 28 Hz, respectively. The students examined the difference in response using each support structure and analyzed the spectral content for each of the cymbals up to Hz. Students examined the effect of a mass damper on the forced response of a structural building model.

Kundrecensioner

The students constructed a structural scale model of a three-story building and excited the model harmonically using a Modal Shop electrodynamic shaker and a signal generated from an NI analog output module in an NI CompactDAQ chassis. They measured the response of the model using accelerometers attached to each floor and a USB dynamic signal acquisition module in the same chassis. The building was excited without the damper from 1 to 20 Hz and displacement data was collected at 1 Hz intervals.

Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement
Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement
Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement
Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement
Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement
Mechanical Vibrations: Modeling and Measurement Mechanical Vibrations: Modeling and Measurement

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