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Modeling for Ultrasonic Health Monitoring of Foams with Embedded SensorsIn this report analytical and numerical methods are proposed to estimate the effective elastic properties of regular and random open-cell foams. The methods are based on the principle of minimum energy and on structural beam models. The analytical solutions are obtained using symbolic processing software. The microstructure of the random foam is simulated using Voronoi tessellation together with a rate-dependent random close-packing algorithm. The statistics of the geometrical properties of random foams corresponding to different packing fractions have been studied. The effects of the packing fraction on elastic properties of the foams have been investigated by decomposing the compliance into bending and axial compliance components. It is shown that the bending compliance increases and the axial compliance decreases when the packing fraction increases. Keywords: Foam; Elastic properties; Finite element; Randomness
Document ID
20050215565
Acquisition Source
Headquarters
Document Type
Contractor or Grantee Report
Authors
Wang, L. (Ohio State Univ. Columbus, OH, United States)
Rokhlin, S. I. (Ohio State Univ. Columbus, OH, United States)
Rokhlin, Stanislav, I. (Ohio State Univ. Columbus, OH, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Numerical Analysis
Funding Number(s)
CONTRACT_GRANT: DTFA03-98-D-00008
CONTRACT_GRANT: NAG1-0266
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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