Nonlinear Constitutive and Mechanical Properties of an Auxetic Honeycomb Structure
نویسندگان
چکیده
Auxetic honeycomb has unique mechanical properties such as good energy absorption capacity, tensile strength and fracture toughness, etc. Therefore, with a negative Poisson’s ratio is used widely in medical, biological, aerospace other fields. This large deformations vibration reduction. It very important to study the nonlinear constitutive of structure. this paper establishes relationship auxetic structure under deformations. relation includes in-plane stress, strain, Young’s modulus honeycomb. The finite element model cells established, calculated results are compared that theoretical calculation results. On basis, influence geometric parameters on studied. will provide basis for further sandwich engineering application structures.
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Most conventional materials expand in transverse directions when they are compressed uniaxially resulting in the familiar positive Poisson's ratio. Here we develop a new class of two dimensional (2D) metamaterials with negative Poisson's ratio that contract in transverse directions under uniaxial compressive loads leading to auxeticity. This is achieved through mechanical instabilities (i.e., b...
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ژورنال
عنوان ژورنال: Mathematics
سال: 2023
ISSN: ['2227-7390']
DOI: https://doi.org/10.3390/math11092062