Methodology for the Composite Tire Numerical Simulation Based on the Frequency Response Analysis

Karpenko, Mykola; Skačkauskas, Paulius; Prentkovskis, Olegas

doi:10.17531/ein/163289

Cited by 12 publications

(12 citation statements)

References 26 publications

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“…Various methods could be used for the verification of the results obtained from conformal mapping and finite element techniques. A frequency response analysis [33] could be one of the options, physical modeling could be the second one, and analogue experimental techniques could be the third one. The first one requires a large set of data and the second one is very expensive.…”

Section: Experimental Verificationmentioning

confidence: 99%

Influence of a Subsidiary Weir on the Stability of a Main Structure Built on a Finite Stratum

Ghazaw,

Ghumman,

Al-Janabi

et al. 2023

Fluids

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Some dams globally have negatively affected downstream structures. Constructing subsidiary weirs may solve this problem. This novel study focuses on investigating the parameters of seepage beneath the original structure and the proposed subsidiary weir. Conformal mapping and finite element methods are used for the analysis. The proposed subsidiary weir consists of a sloping central apron, flat aprons on both the downstream and upstream ends, and upstream and downstream sheet piles of varying depths. The existing structure also has sheet piles of different depths at its upstream and downstream ends, with an impervious layer situated at a specific depth below both the structures. The study derives equations for the simulation of the upwards pressure on both the structures, seepage rate, and exit gradient along the downstream bed and the filter at an intermediate location. Our own developed software for the analysis and a commercial software for numerical methods named Finite Element Heat Transfer (FEHT)-version-1are used to calculate these parameters. The accuracy of the analytical and numerical methods is verified by comparing the results with experimental data, which demonstrate a good level of agreement. This study also simulates the impacts of various factors, such as sheet pile configurations, the depth of the stratum beneath the structure, the ratio of effective heads, and the length of the intermediate filter.

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Section: Experimental Verificationmentioning

confidence: 99%

Influence of a Subsidiary Weir on the Stability of a Main Structure Built on a Finite Stratum

Ghazaw,

Ghumman,

Al-Janabi

et al. 2023

Fluids

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“…Vibrations, among others, influence fatigue, which is a critical design issue in wind energy structures. An example of methods for analyzing such vibrations, based on frequency response analysis, is studied in [2,3]. Specifically, the analysis showed that porous structure fractions can improve the adaptive characteristics of passive control systems utilized for vibrationreducing applications in the low and intermediate frequency ranges for unmanned aerial vehicles.…”

Section: Introductionmentioning

confidence: 99%

Passive Shunted Piezoelectric Systems for Vibration Control of Wind Turbine Towers: A Feasibility Study

Daraki,

Marakakis,

Alevras

et al. 2024

Energies

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Many countries have a variety of offshore and onshore wind turbines that face extreme aging challenges. Issues with harmful vibrations that must be minimized are addressed in this paper. A new method of wind turbine tower vibration control using piezoelectricity and shunt circuits is proposed in this paper. The passive vibration control method is shown to improve the tower’s structural performance under various environmental loads, like wind and seismic excitations. To examine the effectiveness of the suggested shunted piezoelectric system, a simple surrogate finite element model of a wind turbine tower is considered, and various investigations at the second eigenfrequency are carried out. An alternative way of modeling the studied structure is considered and the results demonstrate better performance. The advantages of setting up structural damping systems for decreasing tower vibrational loads and boosting their structural stability and resilience against extreme events are highlighted throughout this work.

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“…The propagation and interaction of electromagnetic waves in a substance are influenced by factors such as the substance's properties and water content. Mykola Karpenko and collaborators [14] utilized piezoelectric micro-vibration testing and frequency analysis to evaluate the properties of tire materials. Their results demonstrated the applicability of the frequency response optimization method in the numerical simulation of composite tires.…”

Section: Introductionmentioning

confidence: 99%

Design and Evaluation of Wheat Moisture Content Detection Device Based on a Stripline

Song,

Zhang,

et al. 2024

Agriculture

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The detection of the moisture content of wheat is an important index used to measure the quality and preservation of wheat. In order to rapidly and non-destructively detect the moisture content of wheat, in this study, we designed a stripline detection device that measures 151 frequency points in the 50–200 MHz frequency range with a vector network analyzer. Random forest (RF), extreme learning machine (ELM), and BP neural network prediction models were established, using the frequency, temperature, volume density and dielectric constant as input and the water content as output. It was shown that, in the frequency range 50–200 MHz, the permittivity of wheat decreases as the frequency increases, and that this is negatively correlated. The dielectric constant of wheat increases as the moisture content, temperature, and bulk density increase, and these are positively correlated. The random forest (RF) prediction model, which uses the frequency, temperature, effective dielectric constant εeff. and volume density as inputs and the wheat moisture content as the output, demonstrates the best performance. The determination coefficient (R2) = 0.99977, the mean absolute error (MAE) = 0.044368, the mean square error (MAE) = 0.0053011, and the root mean square error (RMSE) = 0.072809. This study provides a new device and method for the detection of the moisture content of wheat. The device is small and is not easily disturbed by the external environment. It can be measured in a variety of conditions and is important for the development of low-cost, high-precision, and portable devices for the detection of the moisture content of wheat.

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Methodology for the Composite Tire Numerical Simulation Based on the Frequency Response Analysis

Cited by 12 publications

References 26 publications

Influence of a Subsidiary Weir on the Stability of a Main Structure Built on a Finite Stratum

Influence of a Subsidiary Weir on the Stability of a Main Structure Built on a Finite Stratum

Passive Shunted Piezoelectric Systems for Vibration Control of Wind Turbine Towers: A Feasibility Study

Design and Evaluation of Wheat Moisture Content Detection Device Based on a Stripline

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