Periodic Reporting for period 2 - VIPER (VIbro-acoustics of PERiodic media)
Période du rapport: 2018-01-01 au 2019-12-31
1 - Addressing most of the theoretical and numerical modelling issues connected to the multi-scale characteristics of the vibroacoustics in periodic media.
2 - Assessment of the topology of periodic structures effects on the vibroacoustic performances.
3 - Focusing on the meso-scale constitutive materials effects, with the improvement of the core material performance for vibroacoustics applications.
4 - Studying the design, feasibility and manufacturing of the periodic media concepts.
The objective of WP2 was to perform topological assessment on the vibroacoustics of periodic media. A special emphasis was made on geometry connectivity and using innovative techniques (e.g. Kirigami, multi-layer core topologies) to design and manufacture periodic honeycomb structures for wave propagation enhancements. A full autumn school is planned to cover this objective.
WP3 successfully addressed the effects of constitutive material classes on the vibroacoustic response of periodic media. These include poro-elastic materials, auxetic materials, viscoelastic add-ons and will pursue with the influence of perforating strategies. Applications are already planned in the low frequency range using combinations and manufacturing of nanostructured materials, inclusions with gradient, poro-elastic and auxetic behaviour. A full spring school is planned for this objective.
WP4 follows the 4th Objective and is dedicated to integration issues and industrial applications. The vibroacoustic performances of the periodic structures has been investigated in terms of robustness (uncertain periodic and quasi-periodic configurations). A full summer school was devoted to this objective.
VIPER Training Network will provide a highly skilled workforce in a vital area of technologies development within Europe which will have a significant impact on the partners and industry. In that sense, secondments, workshops and multi-disciplinary courses contributed to the skill development of the ESRs. Organization of several schools inviting outstanding lecturers from the academic side and participants from the industry had highly positive impact on their training. The Fellows were trained in state-of-the-art Computer-Aided Engineering (CAE) methodologies and software. This includes a good understanding of currently used predictive modelling methodologies and optimization.