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Home » Research » Publications

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Micro-, macromechanical and aeroelastic investigation of glass-fiber based, lightweight turbomachinery components

S. Iseni, M. Ramaswamy Guru Prasad, A. Hartmaier, K. Holeczek, N. Modeler, F. di Mare

Asme Turbo Expo 2020: Power for land, sea and air, 10A Structures and Dynamics, (2021)

DOI: 10.1115/GT2020-14951

Download: BibTEX

A major technical challenge for modern aero engines is the development of designs which reduce noise and emission whilst increasing aerodynamic efficiency and ensuring aeroelastic stability of low-temperature engine components such as fans and low-pressure compressors. Composites are used in aviation due to their excellent stiffness and strength properties, which also enable additional flexibility in the design process. The weight reduction of the turbomachine components, due to composite materials and lighter engines, is especially relevant for the design and developments of hybrid-electric or distributed propulsion systems [1]. To accomplish this, a representative volume element (RVE) of a glass-fiber reinforced polymer is created, describing the geometrical arrangement of the textile reinforcement structure within the polymer matrix. For both phases, realistic linear elastic properties are assumed. This RVE will be investigated with the finite element method under various loading conditions to assess its anisotropic elastic properties and also its damping behaviour for elastic waves. To study the influence of delamination on the mechanical properties, small defects will be introduced into the model at the interface between reinforcement and matrix. Based on this micromechanical approach, a constitutive model for the composite will be formulated that describes the anisotropic properties as well as the damping behaviour. This constitutive model is then used to describe the material response in a macro-mechanical model, which serves as the basis for an aeroelastic analysis of a 1/3-scaled high-speed fan using a conventional (Ti-6Al-4V) and fiber composite material.

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{"type":"inproceedings", "name":"s.iseni20211", "author":"S. Iseni and M. Ramaswamy Guru Prasad and A. Hartmaier and K. Holeczek and N. Modeler and F. di Mare", "title":"Micro, macromechanical and aeroelastic investigation of glassfiber based, lightweight turbomachinery components", "journal":"Asme Turbo Expo 2020: Power for land, sea and air", "volume":"10A Structures and Dynamics", "OPTnumber":"GT2020-14951", "OPTmonth":"1", "year":"2021", "OPTpages":"", "OPTnote":"", "OPTkey":"glass fibers; turbomachinery; composite materials; anisotropy; constitutive equations; damping; design; elasticity; engines; polymers; aircraft engines; aviation; compressors; delamination; elastic waves; emissions; fans; fibers; finite element methods; l", "DOI":"10.1115/GT2020-14951"}
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