Relaxation model for dynamic plastic deformation of materials

Yuri Petrov; Elijah Borodin; Ezio Cadoni; Nina Selyutina

doi:10.1051/epjconf/20159404039

Relaxation model for dynamic plastic deformation of materials

Yuri Petrov, Elijah Borodin^*, Ezio Cadoni, Nina Selyutina

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates deformation condition. The phenomenon of yield drop is one of these manifestations. We also discuss a physically based assumption (in the frames of dislocation theory) for analytical form of relaxation time. We find that there are two different characteristic relaxation time parameters, which is playing a main role for different stages of plastic deformation in low defect crystals.

Original language	English
Title of host publication	DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading
Subtitle of host publication	EPJ Web of Conferences
Editors	Ezio Cadoni
Publisher	EDP Sciences
Volume	94
ISBN (Electronic)	9782759818174
DOIs	https://doi.org/10.1051/epjconf/20159404039
Publication status	Published - 7 Sept 2015
Event	11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015 - Lugano, Switzerland Duration: 7 Sept 2015 → 11 Sept 2015

Conference

Conference	11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015
Country/Territory	Switzerland
City	Lugano
Period	7/09/15 → 11/09/15

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10.1051/epjconf/20159404039

Cite this

@inproceedings{c9a0b5184a10498dbaed6bf1ade5bab4,

title = "Relaxation model for dynamic plastic deformation of materials",

abstract = "Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates deformation condition. The phenomenon of yield drop is one of these manifestations. We also discuss a physically based assumption (in the frames of dislocation theory) for analytical form of relaxation time. We find that there are two different characteristic relaxation time parameters, which is playing a main role for different stages of plastic deformation in low defect crystals.",

author = "Yuri Petrov and Elijah Borodin and Ezio Cadoni and Nina Selyutina",

year = "2015",

month = sep,

day = "7",

doi = "10.1051/epjconf/20159404039",

language = "English",

volume = "94",

editor = "Ezio Cadoni",

booktitle = "DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading",

publisher = "EDP Sciences",

address = "France",

note = "11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015 ; Conference date: 07-09-2015 Through 11-09-2015",

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Petrov, Y, Borodin, E, Cadoni, E & Selyutina, N 2015, Relaxation model for dynamic plastic deformation of materials. in E Cadoni (ed.), DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading: EPJ Web of Conferences. vol. 94, 04039, EDP Sciences, 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015, Lugano, Switzerland, 7/09/15. https://doi.org/10.1051/epjconf/20159404039

Relaxation model for dynamic plastic deformation of materials. / Petrov, Yuri; Borodin, Elijah; Cadoni, Ezio et al.
DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading: EPJ Web of Conferences. ed. / Ezio Cadoni. Vol. 94 EDP Sciences, 2015. 04039.

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Relaxation model for dynamic plastic deformation of materials

AU - Petrov, Yuri

AU - Borodin, Elijah

AU - Cadoni, Ezio

AU - Selyutina, Nina

PY - 2015/9/7

Y1 - 2015/9/7

N2 - Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates deformation condition. The phenomenon of yield drop is one of these manifestations. We also discuss a physically based assumption (in the frames of dislocation theory) for analytical form of relaxation time. We find that there are two different characteristic relaxation time parameters, which is playing a main role for different stages of plastic deformation in low defect crystals.

AB - Mechanical model for plastic relaxation of stresses in metals has been proposed. Our approach based on a characteristic plastic relaxation time, which is assumed as a material parameter. In a number of tasks values of its parameter become similarly high and it leads to dynamic effect appearing even at low strain rates deformation condition. The phenomenon of yield drop is one of these manifestations. We also discuss a physically based assumption (in the frames of dislocation theory) for analytical form of relaxation time. We find that there are two different characteristic relaxation time parameters, which is playing a main role for different stages of plastic deformation in low defect crystals.

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U2 - 10.1051/epjconf/20159404039

DO - 10.1051/epjconf/20159404039

M3 - Conference contribution

AN - SCOPUS:84958068539

VL - 94

BT - DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading

A2 - Cadoni, Ezio

PB - EDP Sciences

T2 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015

Y2 - 7 September 2015 through 11 September 2015

ER -

Relaxation model for dynamic plastic deformation of materials

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