Modeling the Mechanisms of Fracture Formation in Nanomodified Polymers

Gondlyakh, Aleksandr; Sokolskiy, Aleksandr; Kolosov, A. E.; Chemeris, Andrey; Shcherbina, Valeriy Yu.; Antonyuk, Sergiy

doi:10.1109/nap51477.2020.9309637

Cited by 2 publications

(3 citation statements)

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“…Modeling the processes of nonlinear deformation of nanotubes in a polymer matrix is very nontrivial and leads to the need to use numerical methods [21], among which the finite element method (FEM) is most widely used [22].…”

Section: Literature Reviewmentioning

confidence: 99%

“…This approach makes it possible to fully consider the entire history of the development of the destruction process, accumulate even the smallest increments of destroyed areas, and adequately correct the corresponding discrete model at each stage of the damage zone advance. Based on this theory, a new refined finite element was developed [22], which makes it possible to simulate the effects of microdamage accumulation depending on macro-and microstress components in individual layers of the composite material (Fig. 1, d).…”

Section: Literature Reviewmentioning

confidence: 99%

“…A large number of control and test problems have been solved to determine the reduced modulus of elasticity CNT of the Armchair and Zigzag types. In [22], the results are compared with solutions known from the literature. The results obtained indicate that the maximum difference with the data does not exceed 5%.…”

Section: Literature Reviewmentioning

confidence: 99%

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This work is devoted to numerical modeling of the destruction and delamination of spatial systems made of nanomodified materials under static loading conditions. Modeling of thin adhesion layers at the microlevel is carried out within the framework of the relations of the refined iterative-analytical theory of deformation of spatial systems. Numerical integration of the resolving equations is performed by the finite element method. Modeling the degradation of the properties of nanocomposites due to the formation in them of various types of nano, micro, and macro damages was carried out based on the method of discrete-virtual propagation of micro and macro defects. The solution of nonlinear boundary value problems is carried out by the finite element method based on the Newton-Kantorovich algorithm, supplemented by a block that implements the iterative-analytical method of variable approximations. A virtual laboratory for determining nanomodified polymer materials' physical, mechanical and strength characteristics has been developed and implemented. A numerical simulation of the process of pulling out a nanotube from a rubber mass is carried out. The analysis of the accumulation of microdefects and the occurrence of macrodamages of delamination in the contact layer "nanotuberubber" is carried out. The results of numerical calculations are in good agreement with experimental data. The numerical modeling results of the change in the stress-strain state of nanomodified rubber specimens are given depending on the change in the coefficient of their reinforcement with carbon nanotubes.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%