Generation of planar tensegrity structures through cellular multiplication
Generation of planar tensegrity structures through cellular multiplication
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DOI：
10.1016/j.apm.2018.07.024
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发表时间：
2018-07
期刊：
影响因子：
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通讯作者：
Omar Aloui;David Orden;L. Rhode-Barbarigos
中科院分区：
文献类型：
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作者：
Omar Aloui;David Orden;L. Rhode-Barbarigos
张拉整体结构是一种处于稳定的自平衡预应力状态的框架结构，在科学和工程的各个领域都有广泛的应用。对张拉整体结构的研究已经产生了可靠的找形和分析技术。然而，大多数技术分别处理拓扑和形式。本文提出了一种基于仿生的平面张拉整体结构拓扑识别与形状确定方法。张拉整体结构是使用张拉整体单元（已被证明可以组成任何张拉整体结构的基本稳定自应力单元）根据两种增殖机制生成的：细胞粘附和融合。的结构的自应力空间的尺寸的变化被发现依赖于进行的粘附和融合步骤的数量，以及组成系统的细胞之间的相互作用。还提供了用于定义自应力空间的基础的方法。通过定义平衡形状、节点数、杆件数以及自应力状态数，元胞倍增法可以整合设计考虑，为张拉整体结构的设计提供了极大的灵活性和控制性，为具有可控特性的平面张拉整体系统的发展开辟了一个全新的领域。
Tensegrity structures are frameworks in a stable self-equilibrated prestress state that have been applied in various fields in science and engineering. Research into tensegrity structures has resulted in reliable techniques for their form finding and analysis. However, most techniques address topology and form separately. This paper presents a bio-inspired approach for the combined topology identification and form finding of planar tensegrity structures. Tensegrity structures are generated using tensegrity cells (elementary stable self-stressed units that have been proven to compose any tensegrity structure) according to two multiplication mechanisms: cellular adhesion and fusion. Changes in the dimension of the self-stress space of the structure are found to depend on the number of adhesion and fusion steps conducted as well as on the interaction among the cells composing the system. A methodology for defining a basis of the self-stress space is also provided. Through the definition of the equilibrium shape, the number of nodes and members as well as the number of self-stress states, the cellular multiplication method can integrate design considerations, providing great flexibility and control over the tensegrity structure designed and opening the door to the development of a whole new realm of planar tensegrity systems with controllable characteristics.