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Title: Wave transmission through silicone foam pads in a compression Kolsky bar apparatus. Comparisons between simulations and measurements.

Abstract

This memo concerns the transmission of mechanical signals through silicone foam pads in a compression Kolsky bar set-up. The results of numerical simulations for four levels of pad pre-compression and two striker velocities were compared directly to test measurements to assess the delity of the simulations. The nite element model simulated the Kolsky tests in their entirety and used the hyperelastic `hyperfoam' model for the silicone foam pads. Calibration of the hyperfoam model was deduced from quasi-static compression data. It was necessary, however, to augment the material model by adding sti ness proportional damping in order to generate results that resembled the experimental measurements. Based on the results presented here, it is important to account for the dynamic behavior of polymeric foams in numerical simulations that involve high loading rates.

Authors:
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1339492
Report Number(s):
SAND-2017-0228R
650287
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Corona, Edmundo, and Song, Bo. Wave transmission through silicone foam pads in a compression Kolsky bar apparatus. Comparisons between simulations and measurements.. United States: N. p., 2017. Web. doi:10.2172/1339492.
Corona, Edmundo, & Song, Bo. Wave transmission through silicone foam pads in a compression Kolsky bar apparatus. Comparisons between simulations and measurements.. United States. doi:10.2172/1339492.
Corona, Edmundo, and Song, Bo. Sun . "Wave transmission through silicone foam pads in a compression Kolsky bar apparatus. Comparisons between simulations and measurements.". United States. doi:10.2172/1339492. https://www.osti.gov/servlets/purl/1339492.
@article{osti_1339492,
title = {Wave transmission through silicone foam pads in a compression Kolsky bar apparatus. Comparisons between simulations and measurements.},
author = {Corona, Edmundo and Song, Bo},
abstractNote = {This memo concerns the transmission of mechanical signals through silicone foam pads in a compression Kolsky bar set-up. The results of numerical simulations for four levels of pad pre-compression and two striker velocities were compared directly to test measurements to assess the delity of the simulations. The nite element model simulated the Kolsky tests in their entirety and used the hyperelastic `hyperfoam' model for the silicone foam pads. Calibration of the hyperfoam model was deduced from quasi-static compression data. It was necessary, however, to augment the material model by adding sti ness proportional damping in order to generate results that resembled the experimental measurements. Based on the results presented here, it is important to account for the dynamic behavior of polymeric foams in numerical simulations that involve high loading rates.},
doi = {10.2172/1339492},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2017},
month = {Sun Jan 01 00:00:00 EST 2017}
}

Technical Report:

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