A version of modeling of nonlinear-hereditary viscoelasticity of polymer materials

Демидов, А. В.; Makarov, A. G.; Stalevich, A. M.

doi:10.3103/s0025654409010130

Cited by 19 publications

(6 citation statements)

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“…It is evident that the calculated dependencies are linear. In equations (Demidov et al, 2009) according to Figure 1 and Figure 2, it is obtained that U 0 ¼ 100 kJ/mol and 10 -22 3 γ ffi 4 • cm . In the calculation of γ according to Figure 2, the mean value of the viscoelastic modulus was used E τ ¼ 8; 5 GPa.…”

Section: Calculation Of the Activation Energy Of Relaxation And Creep Deformation Processes Of Polymeric Materialsmentioning

confidence: 97%

“…It is the amount of heat energy on each channel that deter mines the structure of the heat flow. The transferred part of the internal energy Uðx; tÞ is equal to the sum of the energies on each channel (internal energy reservoirs) (Demidov et al, 2009). It should be noted that Tðx; tÞsome average temperature over a physically small volume.…”

Section: Non-stationary Heat Transfer Through Multilayer Textilesmentioning

confidence: 99%

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Advances in Raw Material Industries for Sustainable Development Goals

Litvinenko¹

2020

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Section: Calculation Of the Activation Energy Of Relaxation And Creep Deformation Processes Of Polymeric Materialsmentioning

confidence: 97%

Section: Non-stationary Heat Transfer Through Multilayer Textilesmentioning

confidence: 99%

Advances in Raw Material Industries for Sustainable Development Goals

Litvinenko¹

2020

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“…In this study, we made the model with the examples of polyester-wool-spandex yarn type and yarn number 36 (tex) or 36 (g/ km) as yarn material examined in this study. Some researchers have reported that the modelling of yarn can be formulated by analytical mechanics and simulated using computer programs [18,19,20,21,22,23,24,25]. Therefore, this research aims to make a better model of the material properties of textile yarns, especially for the stress relaxation model, using an example of polyester-woolspandex yarn with an analytical mechanics approach [26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

A New Model to Calculate Stress Relaxation of Viscoelastic Material for Polyester-Wool-Spandex Yarn with Analytical Mechanics Approach

Putra

Mohamad

Yusuf

2021

J. Penelit. Fis. Apl.

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Many researchers have studied the mechanical properties of yarn in textile science because mechanical properties are the essential parameter in determining yarn quality. This research aims to make a new model and prediction of the material properties of textile yarns, especially for stress relaxation of viscoelastic textile yarn for polyester-wool-spandex yarn cases. In this research, a new approximation of the analytical mechanics model of stress relaxation using a system of four springs and a dashpot to determine viscoelastic yarn properties as polyester-wool-spandex has been studied. A yarn movement equation for viscoelastic yarn as polyester-wool-spandex having 36 yarn count number (in unit tex or g/km) has been formulated using analytical mechanics, and the model has been validated experimentally. The coefficient of determination R2 ranges from 0.82, which shows the closeness between the experimental results and the theoretical predictions. In this research, it is found that this model can be implemented to determine the viscoelastic material of yarn based on the properties of yarn as stress relaxation using the analytical mechanics approach.

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“…Since the pressure and tension differ in dimensionality, comparison of the mechanical characteristics of threads and mesh fabrics requires conversion of the load characteristics to a common dimensionality. Thus, remaining with tension as the characteristic for threads, we introduce a load characteristic as the thread tension within a mesh for mesh fabrics [26][27][28].…”

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confidence: 99%