Stress concentration factor analysis of countersunk holes using finite element analysis and response surface methodology

Gharaibeh, Mohammad A.; Tlilan, Hitham M.; Gharaibeh, Belal M.Y.

doi:10.1080/14484846.2019.1565069

Cited by 6 publications

(6 citation statements)

References 21 publications

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“…R 2 ), and sufficient precision values. The model’s accuracy was demonstrated by the higher R 2 value of 0.9992 . The correlation between the predicted and measured values or the Adj.…”

Section: Resultsmentioning

confidence: 96%

“…The model’s accuracy was demonstrated by the higher R 2 value of 0.9992. 34 The correlation between the predicted and measured values or the Adj. R 2 is used to represent how well the regression model fits the data.…”

Section: Resultsmentioning

confidence: 99%

“…By creating a statistical response surface and FE computational model, , this study aims to analyze the properties of the borophene nanoplatelet (BNP)-reinforced PEDOT:PSS nanocomposite based on the experimentally reported data. This will provide the first insight into the type of composites being proposed, spur research, make practical applications easier for the development of energy storage electrodes, and offer guidance for the future design of similar composite materials.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation and Response Surface Optimization of the Effective Modulus and Electrical and Thermal Conductivities of the Borophene Nanoplatelet-Reinforced PEDOT:PSS Nanocomposite for Energy Storage Application

Adekoya

Sadiku

et al. 2022

ACS Omega

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Conductive organic nanocomposites have been widely employed to achieve a variety of purposes, particularly for energy storage applications, making it necessary to investigate transport properties such as electron and heat transport qualities based on geometric shapes and component materials. Due to the solid B–B bonds, unique atomic structure, and energy storage potential, borophene has received significant attention due to its reported ultrahigh mechanical modulus and metallic conduction. Herein, we investigated the effect and interaction of content materials (volume fraction) and geometric parameters such as the aspect ratio and orientation of borophene nanoplatelet (BNP) inclusions on the mechanical integrity and transport features (electrical and thermal conductivities) of a poly(3,4-ethylene dioxythiophene):poly(4-styrene sulfonate) (PEDOT:PSS) electrode. The boundary condition is crucial in developing the predictive models for the optimized mechanical and transport properties of the composites. The effective modulus, electrical conductivity, and thermal conductivity of the BNP-reinforced PEDOT:PSS-based nanocomposite are evaluated using the periodic boundary condition, the representative volume element-based finite element homogenization, and statistical analysis response surface techniques. The optimal parameters for the PEDOT:PSS/BNP nanocomposite for energy storage application are predicted based on the desirability function to have a 13.96% volume fraction of BNPs, having an aspect ratio of 0.04 at 45° inclination. The desirability value achieved for the material hinges was 0.78 with a predicted Young’s modulus of 6.73 GPa, the electrical conductivity was 633.85 S/cm, and the thermal conductivity was 1.96 W/m K at a generally high predictive performance of <0.03 error. The effective thermal conductivity of the nanocomposite was determined by considering Kapitsa nanoeffects, which exhibit an interfacial thermal resistance of 2.42 × 10–9 m2 K/W. Based on these improved findings, the enhanced PEDOT:PSS/BNP nanocomposite electrode would be a promising material for metal-ion batteries.

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“…R 2 ), and sufficient precision values. The model’s accuracy was demonstrated by the higher R 2 value of 0.9992 . The correlation between the predicted and measured values or the Adj.…”

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Investigation and Response Surface Optimization of the Effective Modulus and Electrical and Thermal Conductivities of the Borophene Nanoplatelet-Reinforced PEDOT:PSS Nanocomposite for Energy Storage Application

Adekoya

Sadiku

et al. 2022

ACS Omega

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“…They also provided empirical formulations to calculate SCF in countersunk holes with different geometric properties. Later, Darwish et al [22,23] and Gharaibeh et al [24] proved that the error in the equations provided by Bhargava et al [24] is considerably high for thick countersunk hole with large radii and countersink depths. As a result, they provided modified and more accurate equations to compute SCF in countersunk holes subjected to uniaxial tension.…”

Section: Introductionmentioning

confidence: 99%

A High-Accuracy Empirical Formula for the Strain Concentration Factor in Countersunk Holes

Gharaibeh¹

2022

MMEP

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This paper presents a modified high-accuracy empirical formula for the strain concentration factor in a centrally-placed countersunk holes in isotropic plate under uniaxial tension. Finite Element Method (FEM) was used to investigate the effect of the problem geometric parameters including, plate width and thickness, as well as the hole radius, countersinking depth and angle on the strain concentration factor. The important influence of Poisson’s ratio was also thoroughly discussed. Based on the FEM-generated data and nonlinear regression, a general and high-precision equation for the strain concentration factor was developed. The formulation process was based on producing a general formula for computing the strain concentration factor with unknown coefficients. Such coefficients are determined by minimizing the relative error between the fitted equation and the FE data using nonlinear least squares method. The results of this newly-developed equation were validated with FEA. The comparison showed high accuracy of the present equation in evaluating strain concentration factor in countersunk holes with a relative approximate error of less than 7%. Besides, this equation was efficiently employed to test the various geometric and material parameters on the strain concentration value of countersunk holes. The results of the present equation were compared to the results of older equation available in literature. The comparison proved much higher accuracy of the present equation in evaluating strain concentration factor especially for deeper and larger countersunk holes than the previously published formula.

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“…Their simulation results showed that the stress concentration is commonly located at the sinking edge of the hole and they further used the numerical data to formulate an empirical formulas to mathematically compute t K in countersunk holes based on the geometry of the hole. Later, Gharaibeh et al [15] and Darwish et al [16,17] provided improved formulas for the SCF in countersunk holes in isotropic and orthotropic plates subjected to uniaxial tensile loadings. Hayajneh et al [18] and Bhargava et al [19] investigated the strain concentration factor (SeCF) in countersunk holes under uniaxial tension.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Stress Concentration Factor Induced in Double Countersunk Holes Due to Uniaxial Tension

Gharaibeh

2020

International Journal of Applied Mechanics and Engineering

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Finite element and response surface methods were utilized to investigate the stress concentration factor induced in isotropic rectangular plates with two identical countersunk rivet holes due to uniaxial tension. In this investigation, the finite element model was constructed using ANSYS software and used to produce stress concentration factor (SCF) data. Additionally, the response surface method (RSM) was implemented to characterize the influence of the problem geometric parameters on the SCF. Besides, RSM combined with least squares regression methods were employed to formulate a simple and effective equation to mathematically compute the stress concentration factor (Kt) value. This equation was consequently verified with finite element analysis (FEA) results. Lastly, an optimum plate and holes configuration that minimizes the SCF was suggested and hence recommended.

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Stress concentration factor analysis of countersunk holes using finite element analysis and response surface methodology

Cited by 6 publications

References 21 publications

Numerical Investigation and Response Surface Optimization of the Effective Modulus and Electrical and Thermal Conductivities of the Borophene Nanoplatelet-Reinforced PEDOT:PSS Nanocomposite for Energy Storage Application

Numerical Investigation and Response Surface Optimization of the Effective Modulus and Electrical and Thermal Conductivities of the Borophene Nanoplatelet-Reinforced PEDOT:PSS Nanocomposite for Energy Storage Application

A High-Accuracy Empirical Formula for the Strain Concentration Factor in Countersunk Holes

A Study on the Stress Concentration Factor Induced in Double Countersunk Holes Due to Uniaxial Tension

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