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On the additive manufacturing, post-tensioning and testing of bi-material tensegrity structures

机译：关于双材料拉伸结构的增材制造，后张拉力和测试

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An investigation on the additive manufacturing and the experimental testing of 3D models of tensegrity prisms and columns is presented. An Electron Beam Melting facility (Arcam EBM S12) is employed to 3D print structures composed of tensegrity prisms endowed with rigid bases and temporary supports, which are made out of the titanium alloy Ti6Al4V. The temporary supports are removed after the additive manufacturing phase, when Spectra cross-strings are added to the 3D printed models, and a suitable state of internal prestress is applied to the structure. The experimental part of the study shows that the examined structures feature stiffening-type elastic response under large or moderately large axial strains induced by compressive loading. Such a geometrically nonlinear behavior confirms previous theoretical results available in the literature, and paves the way to the use of tensegrity prisms and columns as innovative mechanical metamaterials and smart devices. (C) 2015 Elsevier Ltd. All rights reserved.
机译：提出了对拉伸棱镜和圆柱的3D模型进行增材制造和实验测试的研究。电子束熔化设备（Arcam EBM S12）用于3D打印结构，该结构由具有刚性底座和临时支架的张力棱镜组成，该支架由钛合金Ti6Al4V制成。当在3D打印的模型中添加Spectra交叉线并将适当的内部预应力状态应用于结构后，在增材制造阶段后将临时支撑物移除。研究的实验部分表明，在压缩载荷引起的大或中等大轴向应变下，所检查的结构具有加强型弹性响应。这样的几何非线性行为证实了文献中先前的理论结果，并为使用张力棱镜和柱作为创新的机械超材料和智能设备铺平了道路。 （C）2015 Elsevier Ltd.保留所有权利。

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