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Dynamic characterization of frequency response of shock mitigation of a polymethylene diisocyanate (PMDI) based rigid polyurethane foam

Journal Article · · Latin American Journal of Solids and Structures
 [1];  [2]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
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Kolsky compression bar experiments were conducted to characterize the shock mitigation response of a polymethylene diisocyanate (PMDI) based rigid polyurethane foam, abbreviated as PMDI foam in this study. The Kolsky bar experimental data was analyzed in the frequency domain with respect to impact energy dissipation and acceleration attenuation to perform a shock mitigation assessment on the foam material. The PMDI foam material exhibits excellent performance in both energy dissipation and acceleration attenuation, particularly for the impact frequency content over 1.5 kHz. This frequency (1.5 kHz) was observed to be independent of specimen thickness and impact speed, which may represent the characteristic shock mitigation frequency of the PMDI foam material under investigation. The shock mitigation characteristics of the PMDI foam material were insignificantly influenced by the specimen thickness. As a result, impact speed did have some effect.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Sandia National Laboratories, Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1235367
Report Number(s):
SAND--2014-17615J; PII: S1679-78252015000901790
Journal Information:
Latin American Journal of Solids and Structures, Journal Name: Latin American Journal of Solids and Structures Journal Issue: 9 Vol. 12; ISSN 1679-7817
Publisher:
SciELOCopyright Statement
Country of Publication:
United States
Language:
English

References (8)

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Transmission and dissipation of stress wave energy at a percussive drill rod joint journal January 1987
Deformation mechanisms and energy absorption of polystyrene foams for protective helmets journal January 2002
The impact response of motorcycle helmets at different impact severities journal November 2010
Oblique impact testing of bicycle helmets journal September 2008
Polyimide Foams for Aerospace Vehicles journal March 2000
Wave Propagation in the Split Hopkinson Pressure Bar journal January 1983
Effect of Density on Compressive Stress-Strain Behavior of Uniform Density Closed Cell Foams journal May 1985

Cited By (1)

Energy Dissipation Characteristics in Pre-strained Silicone Foam Transitioning to Silicone Rubber journal February 2019

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Related Subjects

36 MATERIALS SCIENCE
Kolsky bar
acceleration
energy dissipation
foam material
frequency response
shock mitigation