Stress and modal analysis of a rotating blade and the effects of nonlocality

M. Tufekci, Q. Rendu, J. Yuan, J. P. Dear, L. Salles, A. V. Cherednichenko

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

This study focuses on the quasi-static stress and modal analyses of a rotor blade by using classical and nonlocal elasticity approaches. The finite element method with an additional numerical integration process is used to evaluate the integral equation of nonlocal contionuum mechanics. The blade is assumed to be made of a linear elastic material of weak nonlocal characteristic. Such materials can be composites, metallic foams, nanophased alloys etc. A full-scale fan blade model is chosen as the test case to represent the rotor blade for a modern high bypass ratio turbofan engine. The boundary conditions and loads are chosen based on the steady-state cruising operating conditions of such blades. The nonlocal stresses are calculated by processing the calculated local stresses. To calculate the nonlocal stresses, the integral form of nonlocal elasticity is employed in the discretised domain. The results of the two cases are compared and discussed.

Original languageEnglish
Title of host publicationroceedings of the ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition
Subtitle of host publicationStructures and Dynamics: Emerging Methods in Design and Engineering
Place of PublicationNew York
PublisherAmerican Society of Mechanical Engineers(ASME)
Number of pages12
Volume10B
EditionStructures and Dynamics
ISBN (Electronic)9780791884225
DOIs
Publication statusPublished - 11 Jan 2021
Externally publishedYes
EventASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition - Virtual, Online
Duration: 21 Sep 202025 Sep 2020
https://event.asme.org/Turbo-Expo-2020

Conference

ConferenceASME Turbo Expo 2020
CityVirtual, Online
Period21/09/2025/09/20
Internet address

Keywords

  • stress
  • modal analysis
  • rotating blade
  • effects
  • nonlocality

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