Based on the progress and advances of additive manufacturing technologies, design and production of complex structures became cheaper and therefore rather possible in the recent past. A promising example of such complex structure is a so-called pantographic structure, which can be described as a metamaterial consisting of repeated substructure. In this substructure, two planes, which consist of two arrays of beams being orthogonally aligned to each other, are interconnected by cylinders/pivots. Different inner geometries were taken into account and additively manufactured by means of fused deposition modeling technique using polyethylene terephthalate glycol (PETG) as filament material. To further understand the effect of different manufacturing parameters on the mechanical deformation behavior, three types of specimens have been investigated by means of displacement-controlled extension tests. Different slicing approaches were implemented to eliminate process-related problems. Small and large deformations are investigated separately. Furthermore, 2D digital image correlation was used to calculate strains on the outer surface of the metamaterial. Two finite-element simulations based on linear elastic isotropic model and linear elastic transverse isotropic model have been carried out for small deformations. Standardized extension tests have been performed on 3D-printed PETG according to ISO 527-2. Results obtained from finite-element method have been validated by experimental results of small deformations. These results are in good agreement with linear elastic transverse isotropic model (up to about ${\epsilon }_{xx}=1.2\%$ of axial elongation), though the response of large deformations indicates a nonlinear inelastic material behavior. Nevertheless, all samples are able to withstand outer loading conditions after the first rupture, resulting in resilience against ultimate failure.

随着增材制造技术的进步和发展，复杂结构的设计和生产变得更便宜，因此在最近的一段时间内成为可能。这种复杂结构的一个有前途的例子是所谓的全景图结构，可以将其描述为由重复的子结构组成的超材料。在此子结构中，两个平面由圆柱体/枢轴互连，该平面由彼此正交对齐的两个光束阵列组成。考虑到了不同的内部几何形状，并使用聚对苯二甲酸乙二醇酯（PETG）作为长丝材料，通过熔融沉积建模技术对其进行了增材制造。为了进一步了解不同制造参数对机械变形行为的影响，通过位移控制延伸试验研究了三种类型的标本。实施了不同的切片方法以消除与过程相关的问题。大小变形分别进行了研究。此外，使用2D数字图像相关性来计算超材料的外表面上的应变。对于小变形，已经进行了基于线性弹性各向同性模型和线性弹性横观各向同性模型的两个有限元模拟。已根据ISO 527-2对3D打印PETG进行了标准化扩展测试。通过有限元方法获得的结果已经通过小变形的实验结果得到了验证。这些结果与线性弹性横向各向同性模型（大约${\epsilon }_{XX}=1.2％$轴向伸长率的变化），尽管大变形的响应表明材料是非线性的非弹性材料。但是，所有样品在第一次破裂后都能够承受外部载荷条件，从而具有抵御最终破坏的弹性。