Novel Nano-particle, Temperature-Independent Damping System: Basic Science and Applications

Abstract

This project envisions a novel concept of mechanical damping: using nanoparticles or microparticles as a damping medium and the interfacial forces as the absorbing mechanism. For thrust damping or radial damping, the mechanical components of the dampers are filled with selected particles. The advantages of particle damping over the conventional damping mechanism are as follows: (1) The performance of the small particles will be temperature independent and therefore the damping device can work in all temperature ranges; (2) The particle size is much smaller than the scale of the container surface roughness, therefore the particles will fill the asperities and create an "ideally smooth" mating surface allowing uniform transmission of shock force from one surface to another; (3) Since the absorbing function is provided by particle reassembly, fatigue is not expected to occur.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 2009
Accession Number
ADA589666

Entities

People

  • Leon M. Keer

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Confocal Microscopy
  • Electron Microscopes
  • Electron Microscopy
  • Energy Transfer
  • Fluids
  • Friction
  • Materials
  • Mechanical Components
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Microscopes
  • Microscopy
  • Modulus Of Elasticity
  • Nanoparticles
  • Particle Size
  • Particles

Readers

  • Aerosol Science/Aerosol Physics
  • Mechanical Engineering/Mechanics of Materials.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Biotechnology