Energy Dissipation Characteristics in Pre-strained Silicone Foam Transitioning to Silicone Rubber
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 precompression 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 ftinction of frequency in the frequency domain.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1498485
- Report Number(s):
- SAND-2018-12106J; 668992
- Journal Information:
- Journal of Dynamic Behavior of Materials, Vol. 5, Issue 1; ISSN 2199-7446
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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