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Your search keyword '"Akhmetshin, L. R."' showing total 2 results
Start Over Author "Akhmetshin, L. R." Topic unit cell Publication Year Range Last 3 years Database Academic Search Index
2 results on '"Akhmetshin, L. R."'

1. Influence of the Cross-Sectional Area of the Metamaterial Structural Elements on the Twisting Motion.

Author

Akhmetshin, L. R. and Smolin, I. Yu.

Subjects
*UNIT cell, *METAMATERIALS, *YOUNG'S modulus, *FINITE element method, *COMPUTER simulation
Abstract

A mechanical metamaterial is considered using mathematical modeling and computer simulation. Its structure consists of tetrachiral elements providing a non-conventional behavior under uniaxial tension/compression. The deformation behavior of the metamaterial is investigated on its solid computer model using the finite element method. A uniaxial loading of the mechanical metamaterial sample is simulated as a quasistatic problem within the linear elasticity theory. Hooke's law for an isotropic material is chosen as the constitutive equation for the base material. A new method of overlapping is proposed for connecting the unit cells of a three-dimensional metamaterial. It allows achieving the maximum twisting effect. The graphs of dependence of the angle of twist and effective Young's modulus on the parameters characterizing the unit cell structure of the metamaterial are presented. [ABSTRACT FROM AUTHOR]

Published
2024
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2. Influence of metamaterial rod length on its rotation behavior.

Author

Akhmetshin, L. R.

Subjects
*UNIT cell, *ROTATIONAL motion, *NUMERICAL analysis, *METAMATERIALS, *LIGAMENTS
Abstract

The work is devoted to the numerical analysis of the uniaxial loading of a sample of mechanical metamaterial. The structure of the mechanical metamaterial is constructed of a ring and four ligaments, making up a tetrachiral structure. The peculiarity of such a structure consists of the twist of the sample under the force load. Numerical simulation of uniaxial loading of the samples allowed us to obtain the results of their mechanical response and to analyze the influence of the number of cells in the rod on its mechanical behavior. The results showed that the additivity principle for twist is invalid, which means that predicting the behavior of the rod as the number of unit cells in it increases is possible with some inaccuracy. The displacements of the vertices of the square sections and the ends of the rod depend linearly on its length measured in the number of unit cells. A similar dependence will be maintained with a further increase in the length of the metamaterial rod. [ABSTRACT FROM AUTHOR]

Published
2023
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