Designing Metallic Microlattices for Energy Absorber Applications

Authors


  • Financial support from DARPA through the Soldier Protection Systems program managed by Dr. J. Goldwasser (contract no. W91CRB-11-C-0112) is gratefully acknowledged. The views expressed are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government. The authors would like to thank Dr. T.A. Smith of Dynamic Research Inc. for help with testing and useful discussions.

Abstract

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Emerging capability to fabricate well-defined, ordered lattice structures offers opportunity to create new energy absorption materials with previously unachieved properties. Metallic microlattices can be designed to maximize energy absorption while not transmitting a stress greater than the injury or damage threshold. The stress–strain response of different microlattice materials is characterized under quasi-static and dynamic loading and compared to state-of-the-art materials.

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