MULTI-MATERIAL OPTIMIZATION FOR 4D PRINTING OF ACTIVE ROD STRUCTURES

    公开(公告)号:US20190272346A1

    公开(公告)日:2019-09-05

    申请号:US16348505

    申请日:2017-11-10

    Abstract: A design optimization and manufacturing approach for the creation of complex 3D curved rod structures with spatially variable material distributions that exhibit active deformation behavior is provided. The framework optimizes the cross-sectional properties of a rod structure, in particular the Young's modulus, such that under given loading conditions the rod structure may obtain one or more target shapes resulting from geometrically nonlinear deformation, from which the structure can then actively deform back to the original shape due to the shape memory effect. A novel algorithm is provided to generate physical realizations from the computational design model, which allows their direct fabrication via printing of shape memory composites with voxel-level compositional control with a multi-material 3D printer. The design and manufacture digital toolchain allows the continuous variation of multiple active materials as a route to optimize mechanical as well as active behavior of a structure.

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