Base Knowledge
Bachelor in Mechanical Engineering or in related areas.
Teaching Methodologies
In theoretical lessons the content is presented through the use of both the board and PowerPoint slides. In theoretical-practical classes typical exercises are solved. The evaluation of this curricular unit is performed through a written exam at the end of the semester. This exam consists of two parts, a theoretical component and a theoretical-practical one, corresponding to 40% and 60% of the final grade, respectively.
Learning Results
The main objective of this unit is to understand the concepts and acquire the fundamental procedures involved in vibration analysis of components and structures.
Program
1. Introduction: elements of a vibratory system; free and forced vibration; damped and undamped vibration systems; types of damping; harmonic movement; procedure in vibration analysis.
2. Discrete systems with single degree of freedom: free or natural vibration; natural frequency of vibration; undamped vibration; damped vibration; under damping, over damping and critical damping vibration; logarithmic decrement; resonance; forced vibration; response to harmonic loads; response to periodic loads; vibration isolation and transmissibility; force transmitted to a rigid foundation; force transmitted to an elastic support; relative motion.
3. Discrete systems with multi degree of freedom: matrix formulation; the theorem of expansion; decoupling of the equations; modal analysis.
4. Experimental vibration analysis: transducers; forcing systems; signal analysis; dynamic tests of machines and structures; balancing of rotating parts; critical speed of shafts; isolation of vibrations.
Internship(s)
NAO