Abstract
Materials with a negative Poisson’s ratio effect perform significantly better than traditional materials for rock mass impact resistance, shear resistance, and energy absorption. Based on these advantages, a negative Poisson’s ratio anchor cable (NPR anchor cable) with high elongation and constant resistance was developed and successfully applied in the field of mine disaster control. However, theoretical and experimental research on the negative Poisson’s ratio effect and peripheral strain characteristics of NPR anchor cables is currently incomplete. This study used several theories and methods, such as static tensile, peripheral strain measurement, and static negative Poisson’s ratio measurement, to investigate the radial deformation law of an NPR anchor cable and the negative Poisson’s ratio characteristics. Experimental results elucidated constant resistance changes in an NPR anchor cable during operation, the motion of the constant resistance body in the constant resistance sleeve, and the deformation law of the constant resistance sleeve. Negative Poisson’s ratio characteristics of the NPR anchor cable and its superior energy absorption characteristics were verified and it provided a theoretical and experimental basis for energy absorption mechanisms of an NPR anchor cable.
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This work was supported by the National Natural Science Foundation of China (NSFC) (41941018) and the Second Tibetan Plateau Scientific Expedition and Research Grant 2019QZKK0708.
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Tao, Zg., Xu, Ht., Ren, Sl. et al. Negative Poisson’s ratio and peripheral strain of an NPR anchor cable. J. Mt. Sci. 19, 2435–2448 (2022). https://doi.org/10.1007/s11629-022-7426-2
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DOI: https://doi.org/10.1007/s11629-022-7426-2