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The Acoustic and Mechanical Engineering Laboratory (LEAM UPC) developed a system for controlling vibrations generated by underground trains. The system involves the use of dynamic vibration absorbers in the L9 tunnel of Transports Metropolitans de Barcelona (TMB). Dynamic vibration absorbers (DVAs) absorb vibrational energy in the system they are coupled to.
They are passive elements that require no maintenance or power and are optimised for a certain frequency range. Their main advantage is their low cost and ease of installation compared to other systems for controlling vibrations on an existing line. While the functioning of DVAs is well understood, their application in a rail tunnel was a pioneering project. Innovative modelling tools needed to be developed to facilitate their application in this environment. The new system will reduce the vibrations that the line produces by 6–8 dB, depending on the conditions in each case.
Related Projects
- The Centre for Sensors, Instruments and Systems Development (CD6) at the Universitat Politècnica de Catalunya - BarcelonaTech (UPC) is taking part in PhotonHub Europe. This is a European project to establish a single pan-European hub for innovation in photonics as a one-stop shop solution that brings together the pioneering photonics solutions, facilities, knowledge and experience of 53 European partners.
- The research group Barcelona Fluids & Energy Lab (IFLUIDS) and the Centre for Technological Innovation in Static Converters and Drives (CITCEA) of the UPC participate in the European project H-HOPE, which is focused on the development of solutions to produce clean energy based on water sources that have still not been exploited, such as pipes and water channels.
- Combining agricultural activity and the production of solar energy by means of photovoltaic panels is the aim of SYMBIOSYST, a project promoted by a consortium of 16 European partners including the UPC. As part of this project, technological tools will be developed to contribute to generating clean energy for the agricultural sector in Europe.
- The production of biogas through anaerobic digestion has been increasing exponentially in Europe in recent years. This is because it can be produced locally and has a clear positive effect on waste recycling, the generation of clean energy, sustainable development or climate action. In this context, the FertiLab project was launched, with the participation of researchers from the Department of Agri Food Engineering and Biotechnology (DEAB) of the UPC.
