Extreme on-demand contactless modulation of elastic properties in magnetostrictive lattices

Abstract 2D lattices are widely popular in micro-architected metamaterial design as they easy to manufacture and provide lightweight multifunctional properties. The mechanical properties of such lattice structures predominantly an intrinsic geometric function the microstructural topology, which generally referred passive metamaterials since there is no possibility alter after manufacturing if application requirement changes. A few studies have been conducted recently show that active modulation elastic possible piezoelectric hybrid structures, wherein major drawback complicated electrical circuits required be physically attached micro-beams. This paper proposes a novel structure by incorporating magnetostrictive patches allow contactless Young’s modulus Poisson’s ratio per real-time demands. We presented closed-form expressions based on bottom-up approach considering both axial bending deformations at unit cell level. generic can used for different configurations (both unimorph or bimorph) topologies under variable vertical horizontal magnetic field intensity. study reveals extreme on-demand including sign reversal (such auxetic behavior structurally non-auxetic configuration, vice-versa) achievable controlling remotely. Orders difference magnitude realized actively metamaterial, necessarily means same material behave like soft polymer stiff metal depending functional new class proposed this article will bring about wide variety paradigms materials structures.