ポアソン比にみられる4位柔軟節構造体の非線形弾性変形挙動

概要

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Spatial structures as being observed in cellular solids behave a wide variety of elastic deformation. In particular, some types of bending-dominated structures might produce the potential deformation mechanics exerted by the rotational manners of flexible joints. In this paper, we propose some of two-dimensional microstructures constructed of four-coordinate flexible joints and elbowed beam members, and conduct the numerical analyses and uniaxial tensile tests, using the really manufactured frameworks, for evaluating the Poisson's ratios of the proposed structures. The elastic properties obtained by the real model, which cover the considerable ranges of Poisson's raios dependent on joint flexibilities, correspond well to those by numerical results. In addtion, the out-of-plane deformation of a certain rigidly jointed structure is newly found from the present experiment.
2010-08-25