Structural Analysis and Testing for Composite Flywheel Development

Abstract

Several effects that can limit the performance of bi-directionally reinforced composite flywheels are investigated. These effects include potential shear failures, degraded properties and variations caused by manufacturing. Finite element analyses are used to determine both the in-plane and interlaminar shear stresses that arise from the discreteness of the individual radial reinforcements. The degradation of material properties due to high biaxial stress levels, especially a drop in shear modulus, is also investigated. Degraded properties are obtained experimentally and used in the evaluation of flywheel performance. Also included is an analysis to determine the feasibility of a static simulation test. In addition, the effect of asymmetric material property variation on flywheel imbalance was investigated.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA048076

Entities

People

  • Donald E. Johnson

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Biaxial Stresses
  • Composite Materials
  • Finite Element Analysis
  • Geometry
  • Manufacturing
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Shear Modulus
  • Shear Properties
  • Shear Strength
  • Shear Stresses
  • Stresses
  • Two Dimensional

Readers

  • Marine Propulsion Engineering and Naval Architecture
  • Structural Health Monitoring of Composite Structures.
  • Theoretical Analysis.