Numerical and experimental study of elastoplastic tension-torsion processes in axisymmetric bodies under large deformations

Баженов, В. Г.; Zhegalov, D. V.; Павленкова, Е. В.

doi:10.3103/s0025654411020087

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…The formulas for the strain rates do not contain rotationsω i j of material particles as a rigid body, and the tensor of active stresses σ i j is determined by the same relations as in the case of small elastoplastic strains. As the computations [6] show, for moderate shear strains, no oscillations in the shear stresses are observed, because the active stress tensor ρ i j is determined by integro-differential relations 9 with decaying memory rather than by the tensor of plastic strains.…”

Section: Constitutive Equationsmentioning

confidence: 90%

“…The sample is made of steel 12Kh18N10T with the following elastic characteristics: the elastic modulus is E = 210 × 10 5 MPa, the Poissons ratio is μ = 0.3, the yield strength is σ T = 2.4 × 10 2 MPa, and the density is ρ = 7.8 × 10 3 kg m 3 . To equip the model with material parameters, we use the true stress-strain curve σ T (κ), constructed on the basis of monotonic torsion experiments with identical samples until failure and performed by the technique proposed in [6,12]. In addition, we use the dependence of the Bauschinger effect measure on the amount of accumulated plastic strains δ(κ), obtained on the basis of tension-compression experiments.…”

Section: Numerical and Experimental Studiesmentioning

confidence: 99%

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The experimental and theoretical analysis of high strains and limit states of elastoplasic cylindric shells under the complex loading of pressure and torsion

Artemyeva¹,

Баженов²,

Жегалов³

et al. 2016

Arch Appl Mech

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Nowadays, there are no techniques or software making it possible to simulate the high strains of shells under the combined complex loadings of internal pressure and torsion in the generalized axisymmetrical formulation. These problems are inherent for the experimental investigations of elastoplastic properties of metals and alloys on tubular samples. In this paper, we present the variation-difference method for solving similar problems with taking into consideration high strains and the conditions of an inhomogeneous stressstrain state. We conduct the numerical and experimental studies of the process of elastoplastic deformation and plastic strain localization under the combined loadings of internal pressure and torsion. The mutual influence of torsion on the shell forming under high strains is estimated. The loss of stability with axisymmetric and non-axisymmetric forms is analyzed by 2D and 3D modeling. The simulations results are finally validated by experiments.

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Section: Constitutive Equationsmentioning

confidence: 90%

Section: Numerical and Experimental Studiesmentioning

confidence: 99%

The experimental and theoretical analysis of high strains and limit states of elastoplasic cylindric shells under the complex loading of pressure and torsion

Artemyeva¹,

Баженов²,

Жегалов³

et al. 2016

Arch Appl Mech

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“…The problem defined in solid medium links chemistry, shock waves (gas dynamics) and temperature. We have according to [11] and [12] first relations listed as:…”

Section: Methodic Of Load-calculationmentioning

confidence: 99%

Mathematical Model of Seismoexplosion in Tunnel Surrounding

Svoboda

Kravtsov

2015

AMM

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The construction of objects of critical infrastructures such as a new roads, utility tunnels, communication networks, underground parks and other structures is associated by the way with generation of vibrations in the vicinity of the underground structures, and not only human lives can be lost but also extensive material damage can be expected due to technological and natural hazards based on vibrations. This paper presents the general governing equations for coupled thermo-hydromechanical process in the tunnel surrounds. Modeling and analysis of laminated composite cylinder applied for the objective analysis of shock wave propagation in the soils and possibilities to estimates of the tunnel structure damage.

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“…When there are developed torsional deformations, the curves approach one another, since the memory of the material is restricted to the zone of small deformations. 11 Preliminary stretching (hardening) of the sample gives rise to non-axisymmetric loss of stability at an earlier stage of the deformation, the critical value of the conventional shear strain z␤ decreases by a factor of approximately two and the torsional moment M * increases by 30%.…”

Section: Non-axisymmetric Loss Of Stabilitymentioning

confidence: 98%

Large deformations and limiting states of elastoplastic shells of revolution under combined complex loadings

Artem'eva

Баженов

Kazakov

et al. 2015

Journal of Applied Mathematics and Mechanics

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Numerical and experimental study of elastoplastic tension-torsion processes in axisymmetric bodies under large deformations

Cited by 8 publications

References 1 publication

The experimental and theoretical analysis of high strains and limit states of elastoplasic cylindric shells under the complex loading of pressure and torsion

The experimental and theoretical analysis of high strains and limit states of elastoplasic cylindric shells under the complex loading of pressure and torsion

Mathematical Model of Seismoexplosion in Tunnel Surrounding

Large deformations and limiting states of elastoplastic shells of revolution under combined complex loadings

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