The effects of the viscosity and density on the natural frequency of the cylindrical nanoshells conveying viscous fluid

Sharaf, Hussein Kadhim; Salman, Sadeq; Dindarloo, Mohammad Hassan; Kondrashchenko, Valery I.; Davidyants, Alla; Кузнецов, С. В.

doi:10.1140/epjp/s13360-020-01026-y

Cited by 25 publications

(17 citation statements)

References 40 publications

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“…MATLAB had been conducted to analysis input data by using fuzzy logic tool and input data as follow: First force = "FF", Second force = "SF", and Third force = "TF". For the output of fuzzy logic controller process, following terms had been used: Crack depth = "CD" and Crack length= "CL" (Sharaf et al, 2021a). According to the fuzzy logic subset, the rules fuzzy are known with a general code as follows: "If (FF is FFi and SF is SFj and TF is TFk) then (CD is CDijk and CL is CLijk), where i= 1to 9, j=1 to 9, and k=1 to 9" Because of "FF", "SF", and "TF" there are nine functions.…”

Section: Methodsmentioning

confidence: 99%

Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Raheemah¹,

Fadheel²,

Hassan³

et al. 2021

JST

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The present study aims to investigate crack presence in a rigid steel beam so that it can be considered in structural design. A finite element method (FEM) had been used with the Ansys 16.1 software to simulate the whole steel body with three different forces and moments with a magnitude force subjected at the free end of the beam. The steel rod had been considered as simple cantilever to be modelled by the software. Von Mises stress had been considered in the simulation process where the maximum value of stress due to applied load and moment was 1.9 MPa. Total deformation of the whole body had also been considered to instigate the maximum deformation (4.3mm) due to applied loads and moments. Furthermore, MATLAB and through fuzzy logic had been used to assist in the investigation of cracks. Both approaches had been governed by the Euler-Bernoulli theory for free vibration of motion equations. The other aim of this study is to evaluate results received from the Ansys with MATLAB for the same boundary conditions as the case.

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Section: Methodsmentioning

confidence: 99%

Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Raheemah¹,

Fadheel²,

Hassan³

et al. 2021

JST

Self Cite

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“…Also, the crest of the distribution becomes less sharp when its tail becomes shorter as increases. This means that the kurtosis of the mixture distribution decreases as increases [8]. , * , ,…”

Section: A the Mixture Exponential Distributionmentioning

confidence: 97%

Analysis of Waiting Time Using Three Mixtures Exponential Distribution

Hasanain¹,

Elaibi²

2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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Mixed exponential distributions play a significant role in lifetime data analysis, but if we use traditional statistical methods to estimate the parameters in the model, it will be very difficult. However, we employed the Expectation-Maximization (EM) algorithm to estimate the parameters of the model. It will simplify the complexity of the calculation. This paper studies the parameter estimation problem in a complete data situation and gives Monte Carlo (MC) simulation. The EM algorithm is good to estimate the parameters for the three mixed exponential distributions. The parameters estimating were remarkably close to the real values; simultaneously, the samples' RMSE values are more and smaller along with the increase of the sample size so that the method can be regarded as a kind of very effective statistical analysis calculation method. Results show that the algorithm based on EM to estimate the parameters of the mixed exponential distribution is remarkably effective. An application was made at the three phases waiting time in the Rasheed Bank in AL-Mustansiriyah University. The results showed that the estimating mean waiting time by EM algorithm for then the audit stage phase has the biggest proportional in this process which has formed (48%) from total mixture distribution component with scale parameter (0.46 hours), then the provide information phase (32%) with scale parameter (0.44 hours), then the stage of the cashier (20%) with mean waiting time (0.32 hours).

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“…The mesh was created using mechanical ANSYS. In the complex meshed model, tri type pave mesh was used and quad type was used in the remaining meshed model [13]. ANSYS has a completed mesh as seen in Figure 1.…”

Section: Meshing and Geometrymentioning

confidence: 99%

Numerical Investigation of Heat Transfer in Car Radiation System Using Improved Coolant

Hassan

Afluq

Siba

2021

ARFMTS

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In the this study , numerical analysis of heat transfer in the radiation system of the car has been investigated by using pure water and water with nano-fluid. ANSYS fluent version 16.1 has been conducted to carry out the simulation process using Computational Fluid Dynamic (FCD) approach. This study has been validated with experimental results and based on the simulation results the error was 8% when applying the same boundary condition. And the validation process was carried out for the flow rate with Nusselt number in both concertation 0.7 % and 1 %. Based on numerical analysis, the Nusselt number has been increased by increasing nano particle concertation. Increased number of Nusselt causes the enactment of the heat exchanger. The previous experimental data show that the heat transfer of the nanofluids was based highly on the concentration of nano particles, the flux conditions and the weak temperature-dependent heat transfer conditions.

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The effects of the viscosity and density on the natural frequency of the cylindrical nanoshells conveying viscous fluid

Cited by 25 publications

References 40 publications

Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Numerical Analysis of the Crack Inspections Using Hybrid Approach for the Application the Circular Cantilever Rods

Analysis of Waiting Time Using Three Mixtures Exponential Distribution

Numerical Investigation of Heat Transfer in Car Radiation System Using Improved Coolant

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