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Technical Brief

A Model for the Design of a Pomelo Peel Bioinspired Foam

[+] Author and Article Information
Jonel Ortiz

Mem. ASME
Department of Mechanical Engineering,
Texas A&M University,
College Station 77840, TX
e-mail: jaortiz16@tamu.edu

Guanglu Zhang

Mem. ASME
Department of Mechanical Engineering,
Texas A&M University,
College Station 77840, TX
e-mail: glzhang@tamu.edu

Daniel A. McAdams

ASME Fellow
Department of Mechanical Engineering,
Texas A&M University,
College Station 77840, TX
e-mail: dmcadams@tamu.edu

1Corresponding author.

Contributed by the Design Automation Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received February 28, 2018; final manuscript received July 11, 2018; published online September 7, 2018. Assoc. Editor: Yan Wang.

J. Mech. Des 140(11), 114501 (Sep 07, 2018) (5 pages) Paper No: MD-18-1160; doi: 10.1115/1.4040911 History: Received February 28, 2018; Revised July 11, 2018

The structure of pomelo peel arouses research interest in recent years because of the outstanding damping and energy dissipating performance of the pomelo peel. Researchers found that pomelo peel has varying pore size through the peel thickness; the pore size gradient is one of the key reasons leading to superior energy dissipation performance of pomelo peel. In this paper, we introduce a method to model pomelo peel bioinspired foams with nonuniform pore distribution. We generate the skeletal open cell structure of the bioinspired foams using Voronoi tessellation. The skeleton of the bioinspired foams is built as three-dimension (3D) beam elements in a full-scale finite element model. The quasi-static and dynamic mechanical behaviors of the pomelo peel bioinspired foams could be derived through a finite element analysis (FEA). We illustrate our method using a case study of pomelo peel bioinspired aluminum foams under quasi-static compression and free fall impact circumstances. The case study results validate our method and demonstrate the superior impact resistance and damping behavior of bioinspired foam with gradient porosity for designers.

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Figures

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Fig. 1

Composition of pomelo peel (Reproduced with permission from Thielen et al. [5]. Copyright 2013 by Wiley-VCH Verlag GmbH & Co. KGaA.)

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Fig. 5

Stress contour of specimen with gradient porosity under free fall impact

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Fig. 6

The internal, kinetic, and plastic dissipation energies of specimen with gradient porosity under free fall impact

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Fig. 2

Comparison in cross section of a uniform porosity specimen (left) and specimen with gradient porosity (right)

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Fig. 3

Stress contour of specimen with uniform porosity under quasi-static compression

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Fig. 4

Stress–strain curve of specimen with uniform and gradient porosity under quasi-static compression

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