On the effect of the mode of connection between the node and the ligaments in anti-tetrachiral systems
2015
Chiral systems may exhibit auxetic behavior, i.e. they may have a negative Poisson's ratio. This particular property has led to their being studied extensively by several authors. A Finite Elements Study is presented here, investigating the mode of connection between the nodes and ligaments in the anti-tetrachiral structure. The results show that the amount of gluing material used to attach the ligaments to the node will not affect the Poisson's ratio, but may have a large influence on the observed stiffness of the structure (Young's modulus). It is also shown that the stiffness of the glue will have a large effect on the mode of deformation of the chiral system. This change in mechanism was found to effect the stiffness of the structure but not its Poisson's ratios.
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