FlexMaps Pavilion: a twisted arc made of mesostructured flat flexible panels
FlexMaps Pavilion: a twisted arc made of mesostructured flat flexible panels
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FlexMaps Pavilion：由介观结构平面柔性面板制成的扭曲弧形
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Paolo Cignoni
中科院分区：
文献类型：
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作者：
F. Laccone;L. Malomo;Jesús Pérez;N. Pietroni;Paolo Cignoni
弯曲主动结构能够从平板开始有效地产生复杂的弯曲形状。面板的期望变形来自于它们的弹性特性的适当选择。被称为FlexMaps的优化面板被设计为，一旦它们被弯曲和组装，所产生的静态平衡配置就与所需的输入3D形状相匹配。FlexMaps的弹性性能由局部变化的螺旋几何介观结构控制，其在尺寸和形状上进行优化以匹配全局曲率（即，弯曲请求）。设计管道从表示输入3D形状的四边形网格开始，它定义了边的大小和螺旋的总量：每个四边形将嵌入一个螺旋。然后，优化算法通过使用简化的预先计算的杆模型来调整螺旋的几何形状。该杆模型源自非线性回归算法，该算法近似于受到数百种载荷组合的实心FEM螺旋模型的非线性行为。这种创新的管道已经应用于一个名为FlexMaps Pavilion的轻型胶合板展馆项目，该项目是一个单层分段扭曲弧，适合3.90x3.96x3.25米的边界框。
Bending-active structures are able to efficiently produce complex curved shapes starting from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match the global curvature (i.e., bending requests) of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which defines the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplified pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arc that fits a bounding box of 3.90x3.96x3.25 meters.