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Title: Full-field validation of polyurethane (PU) foams.


No abstract prepared.

;  [1];  [2]; ;
  1. (Sandia National Laboratories, Albuquerque, NM)
  2. (Sandia National Laboratories, Albuquerque, NM)
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
OSTI Identifier:
Report Number(s):
TRN: US200722%%747
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Seventh Biennial Tri-Laboratory Engineering Conference held May 7-10, 2007 in Albuquerque, NM.
Country of Publication:
United States

Citation Formats

Lu, Wei-Yang, Neilsen, Michael K., Hinnerichs, Terry Dean, Hong, Soonsung, and Jin, Helena. Full-field validation of polyurethane (PU) foams.. United States: N. p., 2007. Web.
Lu, Wei-Yang, Neilsen, Michael K., Hinnerichs, Terry Dean, Hong, Soonsung, & Jin, Helena. Full-field validation of polyurethane (PU) foams.. United States.
Lu, Wei-Yang, Neilsen, Michael K., Hinnerichs, Terry Dean, Hong, Soonsung, and Jin, Helena. Tue . "Full-field validation of polyurethane (PU) foams.". United States. doi:.
title = {Full-field validation of polyurethane (PU) foams.},
author = {Lu, Wei-Yang and Neilsen, Michael K. and Hinnerichs, Terry Dean and Hong, Soonsung and Jin, Helena},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}

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  • The foam material of interest in this investigation is a rigid closed-cell polyurethane foam PMDI with a nominal density of 20 pcf (320 kg/m{sup 3}). Three separate types of compression experiments were conducted on foam specimens. The heterogeneous deformation of foam specimens and strain concentration at the foam-steel interface were obtained using the 3-dimensional digital image correlation (3D-DIC) technique. These experiments demonstrated that the 3D-DIC technique is able to obtain accurate and full-field large deformation of foam specimens, including strain concentrations. The experiments also showed the effects of loading configurations on deformation and strain concentration in foam specimens. These DICmore » results provided experimental data to validate the previously developed viscoplastic foam model (VFM). In the first experiment, cubic foam specimens were compressed uniaxially up to 60%. The full-field surface displacement and strain distributions obtained using the 3D-DIC technique provided detailed information about the inhomogeneous deformation over the area of interest during compression. In the second experiment, compression tests were conducted for cubic foam specimens with a steel cylinder inclusion, which imitate the deformation of foam components in a package under crush conditions. The strain concentration at the interface between the steel cylinder and the foam specimen was studied in detail. In the third experiment, the foam specimens were loaded by a steel cylinder passing through the center of the specimens rather than from its end surface, which created a loading condition of the foam components similar to a package that has been dropped. To study the effects of confinement, the strain concentration and displacement distribution over the defined sections were compared for cases with and without a confinement fixture.« less
  • No abstract prepared.
  • No abstract prepared.