Abstract
This section contains the second set of selected papers from the 11th edition of the biennial International Conference series on Vibration Problems (ICOVP-2013), which was held at the Instituto Superior Técnico in Lisbon, Portugal, on 9–12 September 2013, and was jointly organized by the Civil Engineering Department of the Universidade Nova de Lisboa and the Institute of Mechanical Engineering at the Instituto Superior Técnico.
For the second section, a group of papers involving a significant theoretical and analytical component was selected. The review paper by Jiří Náprstek concerns Dynamic Stability. Analytical and numerical approaches to dynamic stability problems in various fields of science and engineering are reviewed, together with a brief summary of the theoretical background, basic definitions and principles. Selected problems, methods and results, as well as research motivations and applications, are identified and discussed.
The paper by Ashok K. Mandal and Pankaj Wahi addresses the vibration characteristics of a string setup which is typical of some Indian musical instruments. In these instruments, the bridge is curved and finite-sized (as opposed to the sharp bridge of western instruments), which causes a change in the string effective length during vibration. The standard formulation is conveniently rescaled to avoid a time-changing moving boundary.
In the paper by Roberto D׳Amico et al. a computationally efficient strategy to design Dynamic Vibration Absorbers is presented. Multiobjective optimization based on genetic algorithms is indirectly applied to minimize the averaged input power over selected bands of frequencies, leading to a strong reduction of the sound radiation and structural vibration. The efficiency of the method is demonstrated on the vibration mitigation of a thin rectangular plate excited by a point force.
Finally, the paper by David Garcia and Irina Trendafilova deals with vibration-based structural health monitoring, with application to the detection of delamination in composite beams. The method introduces the application of singular spectrum and multichannel spectrum analyses in the frequency domain for damage assessment. The method is applied to a composite beam and experimentally verified.
Once again, we take this opportunity to thank all the contributing authors and the
For the second section, a group of papers involving a significant theoretical and analytical component was selected. The review paper by Jiří Náprstek concerns Dynamic Stability. Analytical and numerical approaches to dynamic stability problems in various fields of science and engineering are reviewed, together with a brief summary of the theoretical background, basic definitions and principles. Selected problems, methods and results, as well as research motivations and applications, are identified and discussed.
The paper by Ashok K. Mandal and Pankaj Wahi addresses the vibration characteristics of a string setup which is typical of some Indian musical instruments. In these instruments, the bridge is curved and finite-sized (as opposed to the sharp bridge of western instruments), which causes a change in the string effective length during vibration. The standard formulation is conveniently rescaled to avoid a time-changing moving boundary.
In the paper by Roberto D׳Amico et al. a computationally efficient strategy to design Dynamic Vibration Absorbers is presented. Multiobjective optimization based on genetic algorithms is indirectly applied to minimize the averaged input power over selected bands of frequencies, leading to a strong reduction of the sound radiation and structural vibration. The efficiency of the method is demonstrated on the vibration mitigation of a thin rectangular plate excited by a point force.
Finally, the paper by David Garcia and Irina Trendafilova deals with vibration-based structural health monitoring, with application to the detection of delamination in composite beams. The method introduces the application of singular spectrum and multichannel spectrum analyses in the frequency domain for damage assessment. The method is applied to a composite beam and experimentally verified.
Once again, we take this opportunity to thank all the contributing authors and the
| Original language | English |
|---|---|
| Number of pages | 1 |
| Journal | Journal of Sound and Vibration |
| Volume | 338 |
| DOIs | |
| Publication status | Published - 3 Mar 2015 |