Project description DEENESFRITPL Better models will ensure new aerospace engines give us good vibrations The latest advanced aeroengine designs target significantly enhanced efficiency to support reduced fuel consumption and emissions. These are likely to increase high-frequency vibrations because of changes in things like airflow or turbofan diameter. Understanding the impact of the propagation of such vibrations on the aeroengine and the aircraft itself is fundamental to design for performance and safety. Conventional finite element analyses face limitations and statistical energy analysis (SEA), much better suited, faces challenges requiring complete understanding of the structure to be studied. The EU-funded VibSEA will fill the gap with an extensive experimental campaign to collect data, inform an SEA model and validate it for use in future designs. Show the project objective Hide the project objective Objective Designed to achieve reduction in fuel consumption, the Ultra-High Bypass and High Propulsive Efficiency Geared Turbofan engine incorporates evolutions likely to produce high frequency (HF) vibration excitations which propagate through the structure. Numerical simulation is an efficient tool to control vibrations hence supporting the mechanical design. Where Finite Element (FE) based approaches show limitations due to computational hardware performances and HF dispersion management, Statistical Energy Analysis (SEA) stand as proven and effective method for this frequency range to predict the vibrational energy transfers across partitions – subsystems – of a structure. Challenges of SEA modelling consist of the structure partitioning which usually requires expertise and the accuracy loss at lower frequencies where the high stiffness of parts or complexity of junctions counter the method initial assumptions. Those statements depend strongly on the studied structure, therefore the objective of the proposed project is to develop and demonstrate a SEA modelling process to predict the vibration propagated in a typical complex engine frame. In this scope, best modelling practices from detailed numerical analysis are engaged to both support an extensive test campaign preparation including test vehicle design and manufacture, and produce models covering the target frequency range: from 400Hz to 10kHz. A crucial phase consists in the validation and update of these models from tests post-processing techniques and known methods such as Experimental SEA, Decay Rate damping estimation or input conductance as well as innovative inverse approaches relying on optimization loops. From the comprehensive comparison of these different methods with tests results, a best methods and associated modelling practices are delivered to the topic leader. CETIM and ESI join their complementary competences to develop the modelling and experimental know how applied to the HF vibrations assessment. Fields of science engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraftengineering and technologyenvironmental engineeringenergy and fuelsnatural sciencesmathematicsapplied mathematicsnumerical analysis Keywords SEA Statistical Energy Analysis Experimental Simulation Modelling High Frequency Vibrations Programme(s) H2020-EU.3.4. - SOCIETAL CHALLENGES - Smart, Green And Integrated Transport Main Programme H2020-EU.3.4.5.5. - ITD Engines Topic(s) JTI-CS2-2018-CfP08-ENG-01-33 - Prediction of High Frequency Vibrations in Aircraft Engines Call for proposal H2020-CS2-CFP08-2018-01 See other projects for this call Funding Scheme RIA - Research and Innovation action Coordinator CENTRE TECHNIQUE DES INDUSTRIES MECANIQUES Net EU contribution € 495 128,00 Address Avenue felix louat 52 60304 Senlis cedex France See on map Region Hauts-de-France Picardie Oise Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 495 128,75 Participants (2) Sort alphabetically Sort by Net EU contribution Expand all Collapse all ENGINEERING SYSTEM INTERNATIONAL SAS France Net EU contribution € 268 406,00 Address 3 bis rue saarinen, immeuble le seville 94528 Rungis See on map Region Ile-de-France Ile-de-France Val-de-Marne Activity type Private for-profit entities (excluding Higher or Secondary Education Establishments) Links Contact the organisation Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 353 330,63 Third-party Legal entity other than a subcontractor which is affiliated or legally linked to a participant. The entity carries out work under the conditions laid down in the Grant Agreement, supplies goods or provides services for the action, but did not sign the Grant Agreement. A third party abides by the rules applicable to its related participant under the Grant Agreement with regard to eligibility of costs and control of expenditure. ESI EASTERN EUROPE SRO Czechia Net EU contribution € 84 924,00 Address Brojova 2113/16 326 00 Plzen See on map Region Česko Jihozápad Plzeňský kraj Activity type Private for-profit entities (excluding Higher or Secondary Education Establishments) Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 84 924,38