| The purpose of this research is to apply additive manufacturing（AM）technology
to functionalize mechanical metamaterials which have properties that cannot
be realized with existing materials. In particular, mechanical metamaterials
exhibiting martensitic transformation, which is the mechanism behind superelasticity
and shape memory properties, are being developed by controlling the lattice
structures. Lattice structures that are expected to exhibit these properties
were designed by simulating interatomic bonds with elastomer, manufactured
by AM and evaluated to reveal their mechanical properties. As a result,
we observed the deformation behavior that are similar to the characteristics
of superelasticity and shape memory properties. We also discovered that
phenomenon similar to the phenomenon seen in crystal structures of metallic
materials have occurred in mechanical metamaterials. Furthermore, taking
inspiration from the similarity between crystal structure of metallic materials
and mechanical metamaterials, we designed a structure expected to be capable
of further control of properties. |
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