Blonder Arielle, Sharon Eran
Racah Institute of Physics, HUJI, The Hebrew University, Edmond J. Safra Campus, Jerusalem, 9190401, Israel.
Adv Sci (Weinh). 2021 Dec;8(24):e2102171. doi: 10.1002/advs.202102171. Epub 2021 Oct 29.
Self-morphing of thin plates could greatly impact the life if used in architectural context. Yet, so far, its realizations are limited to small-scale structures made of model materials. Here, new fabrication techniques are developed that turn two conventional construction materials-clay and fiber composites (FRP)-into smart, self-morphing materials, compatible with architectural needs. Controlled experiments verify the quantitative connection between the prescribed small-scale material structure and the global 3D surface, as predicted by the theory of incompatible elastic sheets. Scaling up of desired structures is demonstrated, including a method that copes with self-weight effects. Finally, a method for the construction of FRP surfaces with complex curvature distribution is presented, together with a software interface that allows the computation of the 3D surface for a given fiber pattern (the forward problem), as well as the fiber distribution required for a desired 3D shape (the inverse problem). This work shows the feasibility of large-scale self-morphing surfaces for architecture.
薄板的自变形如果应用于建筑领域，可能会对生活产生重大影响。然而，到目前为止，其实现仅限于由模型材料制成的小规模结构。在此，开发了新的制造技术，将两种传统建筑材料——粘土和纤维复合材料（FRP）——转变为与建筑需求相兼容的智能自变形材料。对照实验验证了规定的小规模材料结构与整体三维表面之间的定量联系，这与不相容弹性薄板理论所预测的一致。展示了所需结构的放大，包括一种应对自重影响的方法。最后，提出了一种构建具有复杂曲率分布的FRP表面的方法，以及一个软件界面，该界面允许计算给定纤维图案的三维表面（正向问题），以及所需三维形状所需的纤维分布（反向问题）。这项工作表明了大规模自变形建筑表面的可行性。
