Quantifying Shock Response of Additively Manufactured Polymer Materials
ORAL
Abstract
Since the onset of modern additive manufacturing (AM), many polymers have been adopted for
fused deposition modeling (FDM). These advancements have enabled rapid prototyping of
components unattainable using traditional manufacturing techniques. As use of many of these
polymers increase, understanding of the mechanical properties are necessary to select appropriate
applications and model behavior with high fidelity. This work investigates the mechanical
response of two AM polymers subject to shock loading conditions using plate impact
experiments. The AM polymers of interest are tough polylactic acid (Tough PLA) and
polyethylene terephthalate glycol (PETG). Experiments are performed at varied impact velocities
to understand the dynamic response when subject to different stress states. A Mie Grüneisen
equation of state is optimized to best fit experimental results for use in modeling dynamic
response of the polymers.
fused deposition modeling (FDM). These advancements have enabled rapid prototyping of
components unattainable using traditional manufacturing techniques. As use of many of these
polymers increase, understanding of the mechanical properties are necessary to select appropriate
applications and model behavior with high fidelity. This work investigates the mechanical
response of two AM polymers subject to shock loading conditions using plate impact
experiments. The AM polymers of interest are tough polylactic acid (Tough PLA) and
polyethylene terephthalate glycol (PETG). Experiments are performed at varied impact velocities
to understand the dynamic response when subject to different stress states. A Mie Grüneisen
equation of state is optimized to best fit experimental results for use in modeling dynamic
response of the polymers.
*Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & 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-NA0003525.
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Presenters
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Christopher R. Johnson
- Sandia National Laboratories