Influence of the constructive parameters for long stroke piston unit on a stressed deformed cylinder state

Aistov, I. P.; Vansovich, K. A.

doi:10.1088/1742-6596/1441/1/012083

Cited by 4 publications

(2 citation statements)

References 4 publications

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“…Fracture mechanics is a branch of mechanics that studies structural materials and their ability to resist fracture under the influence of external forces in the presence of fatigue cracks and various technological operational defects. Accordingly, Fracture analysis assumes the presence of an initial crack [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The assessment of impact of the crack size on the fracture load of a cylindrical element

2021

Proceedings of the III International Workshop on Modeling, Information Processing and Computing (MIP: Computing-2021)

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Fracture mechanics is an important area in the study of materials and structures. In this paper, we will consider the use of tools that are available in this area using the Ansys program. The calculation of the strength of the structure, the assessment from the resource and reliability are carried out in many cases, taking into account the possibility of the presence of technological or operational cracks in them. Loss of constructional integrity can occur for many reasons: selection of inappropriate materials, inadequate design, defects in manufacturing, excess service life, environmental conditions, etc. It became necessary to develop a separate area of knowledge, the invention of separate methods dedicated to the structure with a crack. This is because the design of structural components has traditionally been based on material strength. This approach does not imply an increased stress level due to the existing crack, which can lead to incorrect results.

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Section: Introductionmentioning

confidence: 99%

The assessment of impact of the crack size on the fracture load of a cylindrical element

2021

Proceedings of the III International Workshop on Modeling, Information Processing and Computing (MIP: Computing-2021)

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“…Scratches generally do not have a significant impact on the operational reliability of the equipment due to the fact that their width and depth, as a rule, does not have a defining parameter in terms of life and safe operation. In the current norms of rejection of structural elements of vessels and devices, there are no rejection dimensions of scratches, as well as a description of their most unfavorable locations on the external surface of structural elements from the point of view of emerging places of increased stresses and a change in the stressed-deformed state (SDS) of the element [1][2][3][4]. However, the presence of scratches, especially on small structural elements, can have a significant impact on SDS, due to its geometric dimensions relative to the surface area of the element.…”

Section: Introductionmentioning

confidence: 99%

Stress-Deformed Condition at Different Angle of Scratch Inclination on Flat Cover of Hatch-Blade

et al. 2021

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Defects of mechanical origin are quite often found on the structural elements of the devices of the production facilities of the fuel and energy complex. One of the most common mechanical defects is scratches and hairlines on the outer surface of the structural elements. The current regulatory and technical documentation establishes standards for the rejection of defects of various types, which provide for the decommissioning of objects with unacceptable defects for repair or subsequent dismantling. However, in most cases, mechanical defects such as scratches are within acceptable sizes and do not have a decisive effect on the life, reliability and safe operation of vessels and apparatus. However, the presence of such defects can change the stress-strain state of the object to a more unfavorable side, and therefore accelerate the process of accumulating damage at points of concentration of increased stresses. Subsequently, places with a concentration of increased voltages under certain operating conditions can be sources of premature destruction of the element and failure of the object as a whole. Therefore, the actual work is the simulation of the stress-strain state of the flat manhole cover with a scratch, having a different arrangement. In this work, the stress-strain state of the flat manhole cover is examined depending on the location of the scratch on it at a different angle relative to the vertical axis of symmetry of the cover.

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Study of impact of scratch size and location on stress-strain state of flat cover of separator hatch

Рубцов¹,

Gracheva²,

Kulakov³

et al. 2021

AIP Conference Proceedings

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Influence of the constructive parameters for long stroke piston unit on a stressed deformed cylinder state

Cited by 4 publications

References 4 publications

The assessment of impact of the crack size on the fracture load of a cylindrical element

The assessment of impact of the crack size on the fracture load of a cylindrical element

Stress-Deformed Condition at Different Angle of Scratch Inclination on Flat Cover of Hatch-Blade

Study of impact of scratch size and location on stress-strain state of flat cover of separator hatch

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