Stress-strain state of elastoplastic bodies with crack

Глаголев, В. В.; Glagolev, L. V.; Markin, A. A.

doi:10.1016/s0894-9166(15)30023-9

Cited by 12 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…  (5) We assume that the traction rates on the conjugate boundaries of layer 3 are equal and opposite to the traction rates of the body's conjugate boundaries. In addition, rigid adhesion among the boundaries of area 3 and those of areas 1, 2 is postulated:…”

Section: Fig 1 Loading the Compound Bodymentioning

confidence: 99%

“…If a fracture is within the material surface of a zero measure, then the classical model of a mathematical cut takes place [1][2][3]. If the interaction terminates as a result of destruction of a layer of finite thickness between the surfaces, then the physical cut concept is applied [4,5]. For the time being, subcritical deformation models are the most studied and reasonable ones.…”

Section: Introductionmentioning

confidence: 99%

“…Corresponding models apply to evaluate crack strength in both structures of uniform bodies, bimetals [6], and composite materials where adhesive layers are considered as a probable fracture area [7,8]. Let us distinguish the models where a medium structure parameter is present [5,[8][9][10][11][12]. When performing this or that fracture criterion, the phase of formation of new material surfaces begins.…”

Section: Introductionmentioning

confidence: 99%

“…In the modeling of destruction within the material surface of the zero measure, cohesive elements [16][17][18][19] of a finite element package [20] or system contact elements [21 are used. The widely used bilinear law of the distribution of interaction within the cohesive zone from the opening of a crack with a falling section was considered in the works [4][5]. The main disadvantage of this approach is that cohesive elements must be located in the fracture trajectory that, in general, depends on new material surfaces.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modelling the Generation of New Material Surfaces in a Composite With an Adhesion Layer Under Cohesive Destruction

2018

PNRPU MB

View full text Add to dashboard Cite

Original Russian Text: Glagolev V.V., Markin A.A., Fursaev A.A. Modelling the generation of new material surfaces in a composite with an adhesion layer under cohesive destruction. This paper considers the subcritical elastic-plastic deformation of a three-layer composite and the layer separation accompanied by the fracture of an adhesive layer. The problem is reduced to the system of two variational equilibrium conditions with respect to the bonded layers' velocity fields by means of averaging a stress component in the adhesive layer across its thickness. When we solve an elastic-plastic problem in terms of subcritical deformation, the -area is distinguished where the fracture criterion is reached. The distribution of load (node forces) that affects a body from the -area is determined by resolving a pre-critical deformation problem with the known motion law of the -area boundary. As the next step, we consider changes in the body's stressstrain state (SSS) during the fracture of the -area. We solve the elastic-plastic problem under simple unloading of the body's -surface and remaining an external load that corresponds to the beginning of the fracture process. During the -unloading, the formation of new plastic areas, partial unloading and reaching the fracture criterion are possible. As a result, the body's SSS at the moment when local unloading begins differs from its state when the -unloading ends. This constitutes a principal distinction from the common procedure of "killing the elements" when the element rigidity (after reaching the fracture criterion) is supposed to be close to null. Herewith the body state outside a removed element is considered to be unchangeable; and the generation of unloading and additional loading zones (after the element is excluded) is not considered. In case of linear elasticity, the solution of the problem with a removed area under fixed external load coincides with the -unloading solution by virtue of the solution uniqueness and the superposition principle. However, the solution of the elastic-plastic problem for the body with the removed area under simple loading will not coincide with the -unloading solution. The paper presents the solutions of composite delamination problems that illustrate the simple -unloading method both in linear elastic and in elastic-plastic formulations. © PNRPU

show abstract

Section: Fig 1 Loading the Compound Bodymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modelling the Generation of New Material Surfaces in a Composite With an Adhesion Layer Under Cohesive Destruction

2018

PNRPU MB

View full text Add to dashboard Cite

show abstract

“…On sea oil and gas complexes, and also on machine-building, chemical, petrochemical, some overworking and other enterprises volumetric hydroaggregates and automated pneumatic test facilities, which basis is constituted by driving pumps of direct reciprocating action gain distribution. Volumetric aggregates with mechanical and pneumatic actuator are effective, first of all, when using in objects with increased fire and environmental danger [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

2017

View full text Add to dashboard Cite

Abstract. The use of modern sealing elements of volumetric hydroaggregates in the oil and gas industry is hampered by lack of scientifically based constructive decisions. The implementation of this complex and urgent challenge is possible due to optimization of geometry of the elastic seal (cuff) by criterion of uniform distribution of contact tensions on all its length that it will promote uniform wear of the seal. It is possible to manage this process change of initial geometry of the cuff.

show abstract

About the influence of the elastoplastic properties of the adhesive on the value of the $${\varvec{J}}$$-integral in the DCB sample

et al. 2021

View full text Add to dashboard Cite

Stress-strain state of elastoplastic bodies with crack

Cited by 12 publications

References 15 publications

Modelling the Generation of New Material Surfaces in a Composite With an Adhesion Layer Under Cohesive Destruction

Modelling the Generation of New Material Surfaces in a Composite With an Adhesion Layer Under Cohesive Destruction

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

About the influence of the elastoplastic properties of the adhesive on the value of the $${\varvec{J}}$$-integral in the DCB sample

Contact Info

Product

Resources

About