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

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Abstract

Silicone foam is used as a shock mitigation material in a variety of systems to protect internal components from being damaged during external shock or impact loading. Characterizing the shock mitigation response of silicone foam under a variety of scenarios is a critical step in designing and/or evaluating new shock mitigation systems. In this study, a Kolsky bar with pre-compression capability was used with a passive radial confinement tube to subject the sample to various levels of pre-strain followed by impact loading. The effects of both pre-strain and impact velocity on impact energy dissipation behavior were investigated for silicone foam. The energy dissipation response of silicone foam is compared to a silicone rubber manufactured using the same processing methods to understand the energy dissipation characteristics of silicone foams transitioning to a silicone rubber. The final density of the foam or rubber plays a key role in both the total energy dissipation ratio in the time domain and the energy dissipation ratio as a function of frequency in the frequency domain.

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Acknowledgements

Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the U.S. Department of Energy or the United States Government.

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  1. Sandia National Laboratories, PO Box 5800, MS0557, Albuquerque, NM, 87185, USA

    Brett Sanborn & Bo Song

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  1. Brett Sanborn
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  2. Bo Song
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Correspondence to Brett Sanborn.

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Mr. Brett Sanborn and Dr. Bo Song are the members of the Society for Experimental Mechanics.

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Sanborn, B., Song, B. Energy Dissipation Characteristics in Pre-strained Silicone Foam Transitioning to Silicone Rubber. J. dynamic behavior mater. 5, 51–58 (2019). https://doi.org/10.1007/s40870-019-00183-1

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  • DOI: https://doi.org/10.1007/s40870-019-00183-1

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