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FAST impact cross-analysis methodology for Composite leading edge Structures

Project information

Grant agreement ID: 632420

Status

Closed project

  • Start date

    1 November 2014

  • End date

    31 October 2016

Funded under:

FP7-JTI

  • Overall budget:

    € 498 199,20

  • EU contribution

    € 373 646

Coordinated by:

ALPHA CONSULTING SERVICE SRL

Italy

Objective

"ACS will develop an integrated numerical and test approach for composite wing leading edge hailstone impact application with electrical ice protection system. We propose finite element free fast impact models satisfying the governing equations of impact mechanics coupled with cross-correlations of data from a series of tests organized in a building block approach. First we will develop a fast phenomenological semi-analytical impact model to provide rapid predictions of the impact force-time response. It uses laminate mechanics and continuous global spatial interpolation functions to drastically reduce the size of the problem and explicit time integration; Then a reduced phenomenological impact model, which will provide estimates of the maximum impact force, will be integrated with material Characterization and Qualification (MCQ) software and multi-scale progressive failure dynamic analysis (PFDA), to characterize the impact resistance of composite structures and to determine: type of failure (delamination, crippling, etc), damage footprint (which ply, length and width), energy absorbed during impact, and post-impact residual strength. The model accounts for temperature and moisture effects and is suitable for conventional and hybrid composites. We assembled team of experts in aircraft composite design and impact dynamics. We developed GENOA durability and damage tolerance software and ANSYS user material routine for implicit progressive failure analysis. We will develop a user material routine for explicit dynamics. At the end a high-fidelity numerical GENOA-ANSYS FEA model will be available for composite leading edge structures impacted by hail. Predictions will be validated with test data and will provide impact response database to complement the experimental validation. The numerical model will capture damage not seen during general visual inspection and will facilitate inspection and maintenance of critical systems for continued operational safety."

Coordinator

ALPHA CONSULTING SERVICE SRL

Address

Via Monteleone Sabino 12/B
00131 Roma

Italy

Activity type

Private for-profit entities (excluding Higher or Secondary Education Establishments)

EU Contribution

€ 224 816

Administrative Contact

Vinicio Salvi (Mr.)

Participants (2)

PANEPISTIMIO PATRON

Greece

EU Contribution

€ 133 830

GLEXYZ ENGENHARIA INVESTIGACAO E DESENVOLVIMENTO UNIPESSOAL LDA

Portugal

EU Contribution

€ 15 000

Project information

Grant agreement ID: 632420

Status

Closed project

  • Start date

    1 November 2014

  • End date

    31 October 2016

Funded under:

FP7-JTI

  • Overall budget:

    € 498 199,20

  • EU contribution

    € 373 646

Coordinated by:

ALPHA CONSULTING SERVICE SRL

Italy