Fatigue strength of threaded screws in submersible centrifugal pumps under a pulsating rupture force

Иванов, А. С.; Smirnov, N. I.; Murkin, S. V.; Ermolaev, M. M.

doi:10.3103/s1068798x15080067

Cited by 3 publications

(5 citation statements)

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“…The permissible bolt loads take into account both the strength properties of the bolt material and its geometric features, which for metric threads may be related to the bolt's outer diameter and nut height or the length of the bolt inserted into another structural element (Eqs. 13,5,8,16,17,22). In the case of screws made of plastic with additive techniques, the inherent discontinuity of the screw material, resulting from micropores or the adoption of light internal structures, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…In the case of a metric thread, the permissible loads F QCA , F QTA , and F QpA are determined by the formula (13) for the permissible tensile stresses in the bolt core, by the formulas ( 5), ( 8), ( 16), (17) for the permissible shear stresses in the cross section of the thread and by the formula (22) for the permissible surface pressures on the thread surface, respectively.…”

Section: Screw Strenght -Analitical Models Static Torsional Strength ...mentioning

confidence: 99%

“…Their goal is an effective and safe connection of elements with each other. Therefore they must guarantee a constant and high value of the clamping force while ensuring ease of disassembly [16,17]. Calculating the strength of screwthreaded joint can be a long and complicated process.…”

mentioning

confidence: 99%

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Strength of threaded connections additively produced from polymeric materials

Dziubek

Budzik

Kawalec

et al. 2022

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The article presents the results of strength tests of screw-nut threaded connections made of polymeric materials such as: ABS, PLA, PET-G and RGD720. In order to make physical models, three 3D printing techniques were used: Fused Deposition Modeling (FDM), Fused Filament Fabrication (FFF), and PolyJet. The tests took into account the stresses caused by the axial force generated when the bolt is screwed into the nut or other structural element. Due to the complexity of the issue, the presented studies are only a starting point for further research.

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Section: Discussionmentioning

confidence: 99%

Section: Screw Strenght -Analitical Models Static Torsional Strength ...mentioning

confidence: 99%

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Strength of threaded connections additively produced from polymeric materials

Dziubek

Budzik

Kawalec

et al. 2022

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“…The same applies to the approach to the development of the geometry of 3D-CAD models of screw elements. In the 3D-CAD modeling process, it is necessary to determine the fitting value of the screw-threaded joint manufactured with additive techniques [14]. This complex issue cannot be directly implemented based on the guidelines provided for standard screw thread manufacturing procedures [15,16].…”

Section: Introductionmentioning

confidence: 99%

Geometrical Accuracy of Threaded Elements Manufacture by 3D Printing Process

Budzik¹,

Dziubek²,

Kawalec³

et al. 2023

Adv. Sci. Technol. Res. J.

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Additive processes allow for almost any manufacturing of screw-threaded joint elements. However, this requires knowledge of the geometrical relationships of a threaded itself and the strength of materials from which the screwthreaded joint is made. Thanks to the development of research models and conducting tests related to dimensional accuracy and surface roughness, it was possible to test the models made by MEX process of ABS-M30, PLA, ABS, PETG materials, and PolyJet process from RGD720 polymer material.In the case of measurements carried out on the MarSurf XC20 system, the internal and external thread profile was obtained.Measurements of the surface roughness of the printed models were made using the Taylor Hobson TalyScan 150 profilometer. Based on the obtained surface, following the ISO 25178-2 standard, selected parameters were determined.

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“…The system provides for calculation of hydraulic jack parameters and automatic construction of 3D model, creation of associative drawings and other required documentation on its basis [2,4,10].…”

Section: Cad Principles For Hydraulic Jacks Designmentioning

confidence: 99%