The behavior of the chiral S‐shaped structure subjected to large tensile loads in both X and Y directions is reported herein. The physical samples of stainless steel 316L are fabricated by the selective laser melting technique and experimental tests are conducted on a universal tensile testing machine. The results of tensile tests in the form of deformation patterns, tensile stress–strain curves, and Poisson's ratios are shown pictorially and graphically. The orientation of the S‐shaped structure with X‐direction loading is found to exhibit higher auxeticity over the large range of tensile loading. Nonetheless, the structure is also found auxetic when loaded from Y‐direction albeit the values of negative Poisson's ratios are not as high as of the X‐directional loading.

中文翻译：

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大拉伸变形下新型手性S形辅助结构的研究

本文报道了手性S形结构在X和Y方向均承受较大拉伸载荷的行为。316L不锈钢的物理样品是通过选择性激光熔化技术制造的，并且实验测试是在通用拉伸试验机上进行的。拉伸试验的结果以变形方式，拉伸应力-应变曲线和泊松比的形式以图形和图形方式显示。发现在大的拉伸载荷范围内，具有X方向载荷的S形结构的取向表现出较高的膨胀性。尽管如此，当从Y加载时，该结构也被发现是膨胀的负泊松比的值不如X方向载荷高。