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H2020Doctoral network2018–2022

N2N · European industrial doctorate for advanced, lightweight and silent, multifunctional composite structures

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2018-03-01 → 2022-02-28
EU contribution
€809,451
Participants
6
Scheme
MSCA-ITN-EID

Lines connect the coordinator with its partners.

Results in brief

European industrial doctorate for advanced, lightweight and silent, multifunctional composite structures

Modern aeronautical structures are increasingly made of composite materials due to their lightweight benefits. However, composite structures exhibit poor dynamic and acoustic isolation levels compared to conventional metallic ones. Consequently, optimally designed composite with acoustic and vibrational isolation properties should be developed. The N2N Training Network developed a high-fidelity and efficient Multidisciplinary Design Optimization (MDO) toolbox for multifunctional composites having poroelastic inclusions and combining minimum mass with maximum damping and comfort levels. On the research side, N2N focused on developing multiscale models for obtaining a comprehensive description of random poroelastic materials coupled to a composite structural segment and understanding the interaction of acoustic waves with such complex. Technical achievements include: Virtual Element method (VEM) to treat coupled poromechanical problems, and the Multiscale Virtual Element Method (MsVEM) applied to elastostatic and poromechanical problems. Analytical condensation model for three-layer structures which is easy to use and applicable to multilayer panels including poroelastic materials. A new condensation model applicable to thicker structures, which drastically reduces the meshing effort and computational load. A new finite element scheme which has shown to be at least 15 times faster than existing full finite element modelling (FEM). An MDO environment for layering optimisation of industrial sound packages. N2N provided a fully supportive training environment with an industrial and academic focus.

Data: CORDIS, © European Union

Project objective

Modern aeronautical structures are increasingly made of composite materials due to their well-known benefits. Despite their superior structural characteristics, composite structures exhibit poor dynamic and acoustic isolation levels compared to conventional metallic ones. As a result and in order to maintain the comfort levels in the passenger and payload compartments within acceptable limits, additional acoustic and vibrational isolation technologies (sound packages) are necessary in several transport applications. If non-optimally designed for a certain application, these sound packages can add substantial weight to the structure, compromising the weight benefits gained by the employment of composites.The aforementioned challenges imply an urgent and genuine need for development of lightweight and multifunctional structures, for modern industrial transport applications. The N2N Training Network aims at developing a high-fidelity and efficient Multidisciplinary Design Optimization (MDO) scheme for multifunctional composites having poroelastic inclusions and combining minimum mass with maximum damping and comfort levels. On the research side, N2N will focus on developing multiscale models for obtaining a comprehensive description of random poroelastic materials coupled to a composite structural segment. Understanding the interaction of acoustic waves with such complex materials is another scientific challenge that the Network will tackle. N2N aims at developing reliable tools for providing accurate optimal designs for multifunctional composite structures that combine lightweight properties with exceptional acoustic and vibration isolation.On the training side, N2N will provide a fully supportive environment for 3 ESRs. A training programme aiming at developing both the research as well as the transferable skills of the Fellows has been designed. All Fellows will have the opportunity to work in a multidisciplinary (industrial and academic) research environments.

Original text from CORDIS.

Participants

  • THE UNIVERSITY OF NOTTINGHAM · NottinghamCoordinatorUnited Kingdom
  • ECOLE NATIONALE DES TRAVAUX PUBLICS DE L'ETAT · Vaulx En VelinFrance
  • MATELYS - RESEARCH LAB · Vaulx En VelinFrance
  • UNIVERSITE DE SHERBROOKE · SherbrookeCanada
  • UNIVERSITY OF BRISTOL · BRISTOLUnited Kingdom
  • UNIVERSITY OF NEW SOUTH WALES · SydneyAustralia

Links

Data: CORDIS, © European Union