Stress and Strain Heuristics for a Layered Elastomeric Foam at Medium Impact Rates

Published

September 14, 2020

Author(s)

Alexander Landauer, Jared C. Van Blitterswyk, Michael A. Riley, Aaron M. Forster

Abstract

Impact mitigating materials (IMMs) are used to reduce injury or damage due to a blunt impact, which often occurs at high rates or energies. Innovation in IMMs and designs strategies are required for the development of safer protective equipment. A key challenge is translating between idealized experiments (e.g. quasistatic uniaxial stress or high rate Kolsky bar uniaxial strain measurements), fine-grain computational simulations, and real-world performance. To address this challenge, we have coupled high fidelity digital image correlation measurements with drop tower testing, based on our previous work presented to the SEM community. By using digital image correlation, an instrumented drop mass, and an instrumented load plate we obtain spatially and temporally resolved data for a realistic impact scenario. This represents an experimental framework that may be used to guide and validate design criteria applicable to the impact behavior of monolithic and layered IMMs.

Proceedings Title

Proceedings of the Society for Experimental Mechanics

Conference Dates

September 14-17, 2020

Conference Location

Bethel, CT, US

Conference Title

Society for Experimental Mechanics

Pub Type

Conferences

Keywords

Impact protection, elastic foam, drop tower testing, digital image correlation, high-speed imaging

Citation

Landauer, A. , Van Blitterswyk, J. , Riley, M. and Forster, A. (2020), Stress and Strain Heuristics for a Layered Elastomeric Foam at Medium Impact Rates, Proceedings of the Society for Experimental Mechanics, Bethel, CT, US (Accessed April 19, 2024)