3D printed hierarchical honeycombs with shape integrity under large compressive deformations

doi:10.1016/j.matdes.2017.10.028

Title: 3D printed hierarchical honeycombs with shape integrity under large compressive deformations

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Abstract

Here, we describe the in-plane compressive performance of a new type of hierarchical cellular structure created by replacing cell walls in regular honeycombs with triangular lattice configurations. The fabrication of this relatively complex material architecture with size features spanning from micrometer to centimeter is facilitated by the availability of commercial 3D printers. We apply to these hierarchical honeycombs a thermal treatment that facilitates the shape preservation and structural integrity of the structures under large compressive loading. The proposed hierarchical honeycombs exhibit a progressive failure mode, along with improved stiffness and energy absorption under uniaxial compression. High energy dissipation and shape integrity at large imposed strains (up to 60%) have also been observed in these hierarchical honeycombs under cyclic loading. Experimental and numerical studies suggest that these anomalous mechanical behaviors are attributed to the introduction of a structural hierarchy, intrinsically controlled by the cell wall slenderness of the triangular lattice and by the shape memory effect induced by the thermal and mechanical compressive treatment.

Authors:

^[1]; Li, Tiantian ^[2]; Jia, Zian ^[2]; Scarpa, Fabrizio ^[3]; Yao, Chun-Wei ^[4];

^[2]

National Renewable Energy Lab. (NREL), Golden, CO (United States). Transportation and Hydrogen Systems Center; State Univ. of New York (SUNY), Stony Brook, NY (United States). Dept. of Mechanical Engineering
State Univ. of New York (SUNY), Stony Brook, NY (United States). Dept. of Mechanical Engineering
Univ. of Bristol, Bristol (United Kingdom). Bristol Composites Inst. (ACCIS)
Lamar Univ., Beaumont, TX (United States). Dept. of Mechanical Engineering

Publication Date:: 2017-10-12

Research Org.:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE; National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR)

OSTI Identifier:: 1407465

Report Number(s):: NREL/JA-5400-70441
Journal ID: ISSN 0264-1275

Grant/Contract Number:: AC36-08GO28308

Resource Type:: Accepted Manuscript

Journal Name:: Materials & Design

Additional Journal Information:: Journal Volume: 137; Journal Issue: C; Journal ID: ISSN 0264-1275

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; HIERARCHICAL HONEYCOMBS; STIFFNESS; ENERGY ABSORPTION; ENERGY DISSIPATION; STRUCTURAL INTEGRITY

Citation Formats


                    Chen, Yanyu, Li, Tiantian, Jia, Zian, Scarpa, Fabrizio, Yao, Chun-Wei, and Wang, Lifeng. 3D printed hierarchical honeycombs with shape integrity under large compressive deformations.  United States: N. p., 2017. 
        Web.  doi:10.1016/j.matdes.2017.10.028.

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                    Chen, Yanyu, Li, Tiantian, Jia, Zian, Scarpa, Fabrizio, Yao, Chun-Wei, & Wang, Lifeng. 3D printed hierarchical honeycombs with shape integrity under large compressive deformations.  United States.  doi:10.1016/j.matdes.2017.10.028.

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                    Chen, Yanyu, Li, Tiantian, Jia, Zian, Scarpa, Fabrizio, Yao, Chun-Wei, and Wang, Lifeng. Thu .  
        "3D printed hierarchical honeycombs with shape integrity under large compressive deformations".  United States.  doi:10.1016/j.matdes.2017.10.028.  https://www.osti.gov/servlets/purl/1407465.

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@article{osti_1407465,

  title        = {3D printed hierarchical honeycombs with shape integrity under large compressive deformations},

  author       = {Chen, Yanyu and Li, Tiantian and Jia, Zian and Scarpa, Fabrizio and Yao, Chun-Wei and Wang, Lifeng},

  abstractNote = {Here, we describe the in-plane compressive performance of a new type of hierarchical cellular structure created by replacing cell walls in regular honeycombs with triangular lattice configurations. The fabrication of this relatively complex material architecture with size features spanning from micrometer to centimeter is facilitated by the availability of commercial 3D printers. We apply to these hierarchical honeycombs a thermal treatment that facilitates the shape preservation and structural integrity of the structures under large compressive loading. The proposed hierarchical honeycombs exhibit a progressive failure mode, along with improved stiffness and energy absorption under uniaxial compression. High energy dissipation and shape integrity at large imposed strains (up to 60%) have also been observed in these hierarchical honeycombs under cyclic loading. Experimental and numerical studies suggest that these anomalous mechanical behaviors are attributed to the introduction of a structural hierarchy, intrinsically controlled by the cell wall slenderness of the triangular lattice and by the shape memory effect induced by the thermal and mechanical compressive treatment.},

  doi          = {10.1016/j.matdes.2017.10.028},

  journal      = {Materials & Design},

  number       = C,

  volume       = 137,

  place        = {United States},

  year         = {2017},

  month        = {10}

}

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DOI: 10.1016/j.matdes.2017.10.028

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