Experimental Method for Determining Forces at Bending of Perforated Plates

Pascu, Adrian; Oleksik, Mihaela; Avrigean, Eugen

doi:10.1515/aucts-2017-0008

Cited by 4 publications

(4 citation statements)

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“…The obtained data are shown in Table I. Regarding these data, it should be taken into account that it is impossible to keep the machine under constant load for more than 2 min and for this reason, the compression time at maximum force value was set at 2 min maximum, enough to read the compression values at the time of the pipe fracture [10,11]. Fracture of the pipe material.…”

Section: Test Results and Interpretationmentioning

confidence: 99%

Damage to Natural Gas Distribution Steel Pipelines caused by Rigid Bodies resulting from the Excavation of Laying Trenches

Filip,

Avrigean,

Pascu

2024

Eng. Technol. Appl. Sci. Res.

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The present paper focuses on analyzing the occurrence of defects such as dents and local deformations by laboratory simulations of a real case of a defect detected on a natural gas distribution pipeline lain at a depth of approximately 0.6 m. The defect is caused by a river stone which due to the compression forces, damages the pipe to the point of cracking. In the laboratory, the simulation was carried out on a steel pipe insulated with extruded polyethylene which was acted upon by a mandrel made of duralumin. The purpose of the tests is to determine the maximum values at which the pipe material fractures. It was found that the fracture of the pipes when there are rigid bodies in the protective layer of sand is accelerated by the sand existing between them and the pipe and by the change in the properties of the steel the pipes are made of when they are kept in water.

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Section: Test Results and Interpretationmentioning

confidence: 99%

Damage to Natural Gas Distribution Steel Pipelines caused by Rigid Bodies resulting from the Excavation of Laying Trenches

Filip,

Avrigean,

Pascu

2024

Eng. Technol. Appl. Sci. Res.

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“…In this equation w is the small transverse (out-of-plane) displacement of a thin plate, q is the distributed load acting transversely on the plate as shown in figure 3 and D is the flexual rigidity of the plate defined as in equation [10].…”

Section: Methodsmentioning

confidence: 99%

“…In their study, the effect of various parameters on stress distributions around a different hole in an infinite composite plate was separately investigated [9]. Pascu et.al, describe the method of calculating the forces which appear at the bending of perforated plates with holes of different shapes and placed in different patterns in their study [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Hole Shape Effect on Static Analysis of Perforated Plates With Staggered Holes

Saraçoğlu

Uslu

Albayrak

2021

International Journal of Engineering and Innovative Research

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In this paper, a series of analysis with finite element method was carried out with varying hole shapes of perforation as well as plate dimensions. Eight different models about holes that number of edges at the hole is four to infinite namely circular holes was presented. Than the analyze results of these models with different boundary conditions as fixed supported and simply supported at four edges were compared. In this study it has shown that when the number of edges for a hole is infinite, in other words when the perforation of the plate is circular, mid-point deflection is decreasing according to the other perforation styles. And also analyze results of eight different models of perforated plates are given in tables and comparative graphs.

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“…Besides all these advantages of the process, unfortunately there is still one important drawback, which is the low geometrical accuracy of the parts produced, so the current standards cannot be yet fulfilled, thus the process is still in development phase. Many researchers focused on the main factors which causes the parts produced through ISF to be uncompliant and highlighted through various papers the areas of the parts produced with the highest geometrical errors, like Essa in paper [6][7][8][9][10][11][12].…”

Section: Incremental Forming -General Remarksmentioning

confidence: 99%

Common defects of parts manufactured through single point incremental forming

et al. 2021

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Single point incremental forming is one of the most intensely researched die-less manufacturing process. This process implies the usage of a CNC equipment or a serial robot which deforms a sheet metal with the help of a relatively simple tool that follows an imposed toolpath. As every cold metal forming process, besides the many given advantages it has also some drawbacks. One big drawback in comparison with other cold metal forming processes is the low accuracy of the deformed parts. The aim of this research is to investigate the sheet metal bending mechanism through finite element method analysis. The results shows that the shape of the retaining rings has a big influence over the final geometrical accuracy of the parts manufactured through single point incremental forming.

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Experimental Method for Determining Forces at Bending of Perforated Plates

Cited by 4 publications

References 0 publications

Damage to Natural Gas Distribution Steel Pipelines caused by Rigid Bodies resulting from the Excavation of Laying Trenches

Damage to Natural Gas Distribution Steel Pipelines caused by Rigid Bodies resulting from the Excavation of Laying Trenches

Investigation of Hole Shape Effect on Static Analysis of Perforated Plates With Staggered Holes

Common defects of parts manufactured through single point incremental forming

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