Auxetic behavior obtained through the large deformations of variants of the rectangular grid

Farrugia, Pierre‐Sandre; Gatt, Ruben; Mizzi, Luke; Grima, Joseph N.

doi:10.1080/15376494.2021.2012616

Cited by 7 publications

(1 citation statement)

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“…Qi et al [21] studied the three-dimensional chiral structure under large deformation conditions through theoretical and experimental innovation. Farrugia et al [22] studied the possible negative Poisson's ratio effect of square and rectangular honeycombs under large deformation conditions. Hong [23] used the third-order shear deformation theory to study the nonlinear static bending and nonlinear free vibration behavior of functionally graded plates under strong loads.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Constitutive and Mechanical Properties of an Auxetic Honeycomb Structure

Qian

Zhang

2023

Mathematics

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Auxetic honeycomb has unique mechanical properties such as good energy absorption capacity, tensile strength and fracture toughness, etc. Therefore, honeycomb with a negative Poisson’s ratio is used widely in medical, biological, aerospace and other fields. This honeycomb has large deformations in energy absorption and vibration reduction. It is very important to study the nonlinear constitutive of the honeycomb structure. Therefore, this paper establishes the nonlinear constitutive relationship of the auxetic honeycomb structure under large deformations. This constitutive relation includes the in-plane stress, in-plane strain, Young’s modulus and Poisson’s ratio of the negative Poisson’s ratio honeycomb. The finite element model of the negative Poisson’s ratio honeycomb cells is established, and the calculated results of finite element model are compared with that of the theoretical calculation results. On this basis, the influence of the geometric parameters on the mechanical properties of the structure is studied. The results of this paper will provide a theoretical basis for the further study of the auxetic honeycomb sandwich structure and provide a basis for the engineering application of honeycomb structures.

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Section: Introductionmentioning

confidence: 99%