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architected materials

Sung Hoon Kang's picture

Postdoc opening in architected materials (or mechanical metamaterials) at Johns Hopkins University

One postdoctoral fellow position is available in the area of architected materials. Interested individuals should have a Ph.D. in related disciplines.  We are looking for a person with strong motivation, publication record, analytical and interpersonal skills and integrity with expertise in the area of mechanics of materials and structures, metamaterials, and finite element methods. A person with previous experiences in simulations and experiments on dynamic behaviors of soft materials and wave propagation in soft cellular structures is preferred.

Sung Hoon Kang's picture

Design of planar isotropic negative Poisson’s ratio structures

Most of the auxetic materials that have been characterized experimentally or studied analytically are anisotropic and this limits their possible applications, as they need to be carefully oriented during operation. Here, through a combined numerical and experimental approach, we demonstrate that 2D auxetic materials with isotropic response can be easily realized by perforating a sheet with elongated cuts arranged to form a periodic pattern with either six-fold or three-fold symmetry.

Sung Hoon Kang's picture

Multistable Architected Materials for Trapping Elastic Strain Energy

3D printing and numerical analysis are combined to design a new class of architected materials that contain bistable beam elements and exhibit controlled trapping of elastic energy. The proposed energy-absorbing structures are reusable. Moreover, the mechanism of energy absorption stems solely from the structural geometry of the printed beam elements, and is therefore both materials- and loading-rate independent.

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