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Title: Experimental evaluation of low-pass shock isolation performance of elastomers using frequency-based Kolsky bar analyses

Elastomeric materials are used as shock isolation materials in a variety of environments to dampen vibrations and/or absorb energy from external impact to minimize energy transfer between two objects or bodies. Some applications require the shock isolation materials to behave as a low-pass mechanical filter to mitigate the shock/impact at high frequencies but transmit the energy at low frequencies with minimal attenuation. To fulfill this requirement, a shock isolation material needs to be carefully evaluated and selected with proper experimental design, procedures, and analyses. In this study, a Kolsky bar was modified with precompression (up to 15.5 kN) and confinement capabilities to evaluate low-pass shock isolation performance in terms of acceleration attenuation through a variety of elastomers. Also investigated were the effects of preload and specimen geometry on the low-pass shock isolation response.
Authors:
 [1] ;  [1] ;  [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2016-0242J; SAND-2016-7383J
Journal ID: ISSN 1679-7817; 618368
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Latin American Journal of Solids and Structures
Additional Journal Information:
Journal Volume: 14; Journal Issue: 3; Journal ID: ISSN 1679-7817
Publisher:
SciELO
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; shock isolation; frequency response; Kolsky bar; rubbers; EPDM; polyurethane; neoprene
OSTI Identifier:
1247660
Alternate Identifier(s):
OSTI ID: 1360801