Prediction of failure stages for double lap joints using finite element analysis and artificial neural networks

Atta, Mahmoud; Abd-Elhady, Amr A.; Abu-Sinna, A.; Sallam, Hossam El-Din M.

doi:10.1016/j.engfailanal.2019.01.042

Cited by 60 publications

(21 citation statements)

References 22 publications

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“…The exception appears in the correlation between the normalized force values and the tightening torque values in all values of W / D and it is shown in Figure 5. The above results are completely consistent with that offered in Atta et al (2019).…”

Section: Resultssupporting

confidence: 92%

“…This part illustrates a comparison between the present experimental results and those predicted by the authors using artificial neural network (ANN) (Atta et al, 2019). Figure 8 illustrates the effect of torque on Stages 0 (the slipping load value) and 3 (the maximum load value) in both experimental and ANN results.…”

Section: Comparison Of the Resultssupporting

confidence: 56%

“…As the bolted assemblies are greatly utilized connections in many industrial fields, effects of various variables of such connections have been noted. The effects of thickness and element size were investigated in many researches to reach the best conditions (Abu-Sinna et al, 2018; Aktas et al, 2009; Atta et al, 2019). Modes of failure of bolted joints are tensile, shear-out, or bearing failure.…”

Section: Introductionmentioning

confidence: 99%

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Identification of damage stages in bolted metallic joints for different joint geometries and tightening torques using statistical analysis

Abd-Elhady

Abu-Sinna

Atta

et al. 2019

Advances in Structural Engineering

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The main parameters controlling the structural behavior of bolted joints are the tightening torque ( T) and the joint geometry such as the edge distance ( e) to the bolt hole diameter ( D) ratio ( e/ D) and the joint width ( W) to the hole diameter ratio ( W/ D). In the first part of this study, the effects of W/ D and T, with a constant value of e/ D ( e/ D = 3), have been studied experimentally. Three values of W/ D (2.25, 3, and 3.75) with six values of T (0, 10, 15, 20, 25, and 30 N m) have been chosen to construct 18 assemblies. Experimental results highlighted the impact of W/ D, and T, on the different failure stages of bolted double-lap metallic joints. In the second part of this study, analysis of variance has been adopted to analyze the effects of T and W/ D in addition to the effect of e/ D which has been studied previously by the authors. The present experimental results showed that the value of applied load at which the sticking failure occurred increased by increasing the tightening torque up to T = 25 N m for all values of W/ D. However, the other stages of failure were slightly affected by the value of T. The results obtained from the analysis of variance identified that there is no clear effect of W/ D and e/ D on the sticking failure load. However, their effects are markedly clear for other stages of failure.

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Section: Resultssupporting

confidence: 92%

Section: Comparison Of the Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Identification of damage stages in bolted metallic joints for different joint geometries and tightening torques using statistical analysis

Abd-Elhady

Abu-Sinna

Atta

et al. 2019

Advances in Structural Engineering

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“…With using this set of mesh properties, it was purposed to eliminate singularity zones. Mesh size was adopted as half of the adhesive thickness due to CZM and failure load is not strongly tied to mesh size [30,31]. The average element quality and aspect ratio were observed as 0.97 and 1.21 respectively.…”

Section: Preparing Finite Element Analysismentioning

confidence: 99%

Experimental and Numerical Analysis of Epoxy Based Adhesive Failure on Mono- and Bi-Material Single Lap Joints Under Different Displacement Rates

Asl¹,

Çam

Orhan

et al. 2020

Frattura Ed Integrità Strutturale

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Development in material science imposes to use different materials in production. This causes a problem for joining different materials because traditional joining techniques such as welding could not overcome this problem in industries such as automotive. Hence, adhesive bonding overcomes this problem by its superiorities to join different materials. The joint strength of epoxy-based adhesives is affected by adhesive thickness, adherent's surface quality, and curing conditions. In this study, two different materials (SAE 304 and AL7075) were bonded by epoxy adhesive (3M DP460NS) as single lap joint (SLJ) of Aluminum-Aluminum, Steel-Steel, and Aluminum-Steel. The effects of adhesive thickness (0.05, 0.13, 0.25 mm) and surface roughness (281, 193, 81 nm) to strength were compared. SLJs were tested for 1, 10, 25 and 50 mm/min displacement rates. Adhesive surface structures were imaged by Scanning Electron Microscopy (SEM) to investigate adhesive fractures. Surface roughnesses were examined by using Atomic Force Microscopy (AFM) to compare its influence on failure load. Finite Element Analysis (FEA) was conducted by using Cohesive Zone Model with ANSYS 18.0 software to obtain stress distribution of adhesive. Optimum values according to the present conditions of the thickness (0.13mm) and roughness (<200nm) were determined. Experimental results were demonstrated that while displacement rates rose, failure loads increased as well. FEA analysis was fit to experimental results. It has been observed that along with material type, peel stresses become an important factor for joint strength.

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“…In the FE models, the steel H-section and steel plate are simulated by eight-node uncoordinated three-dimensional solid element (C3D8I), while the core concrete is simulated by eight-node reduced integral three-dimensional solid element (C3D8R). The appropriate element sizes were selected in the FE models based on the sensitivity analysis and the balance between accuracy and time cost [20,21]. Therefore, mesh size sensitivity analysis has been carried out in this study.…”

Section: Development Of Modelsmentioning

confidence: 99%

Compressive behaviour of built-up hot-rolled steel hollow and composite sections

Tan

Wang

et al. 2019

Engineering Structures

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：In this paper, a new type of steel section is proposed comprising adjacent H-sections linked together by intermediate steel plates welded along their flanges. Experiments on three hot-rolled steel built-up H-sections and five columns infilled with concrete are conducted, with results showing that both variants having much better ductility compared to conventional columns (i.e. hollow section columns and concrete filled steel tube (CFST) columns). Experimental results showed that the bearing capacity of the built-up hot-rolled steel hollow section column improved by 45.1% to 55% after it was filled with concrete, and the yield bearing capacities of the specimens ZC-4 and ZC-5 are 26.6% and 17.1% higher than that of ZC-1, which shows that the increase of material consumption can improve the structural behaviour of the specimen. A finite element software ABAQUS is used for parametric study. The newly developed finite element models were validated against test results in terms of failure modes and load-displacement curves. A total of 482 numerical results, 132 hot-rolled steel built-up section columns and 350 concrete-filled built-up section columns, have been generated. Based on the experimental and numerical results, the compressive behaviours of hot-rolled steel built-up section columns and concrete-filled built-up section columns are studied. A new design method for the compression capacity of these two types of columns is proposed. It is found that the newly proposed design method could provide accurate and consistent predictionsthe mean value of predicted to experimental results are0.963 for hollow section columns (with coefficient of variation being 0.061) and 1.04 for composite section columns (with coefficient of variation being 0.043).

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Prediction of failure stages for double lap joints using finite element analysis and artificial neural networks

Cited by 60 publications

References 22 publications

Identification of damage stages in bolted metallic joints for different joint geometries and tightening torques using statistical analysis

Identification of damage stages in bolted metallic joints for different joint geometries and tightening torques using statistical analysis

Experimental and Numerical Analysis of Epoxy Based Adhesive Failure on Mono- and Bi-Material Single Lap Joints Under Different Displacement Rates

Compressive behaviour of built-up hot-rolled steel hollow and composite sections

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