PLASTICITY OF METALS AT THE BY VOLUME TENSE STATE

Authors

  • В. А. Огородников Vinnitsa National Technical University, Vinnitsa, Ukraine
  • Л. И. Алиева Donetsk State Engineering Academy, Kramatorsk, Ukraine
  • И. А. Деревенько Vinnitsa National Agrarian University, Vinnitsa, Ukraine

DOI:

https://doi.org/10.20535/2305-9001.2012.64.44372

Keywords:

diagram of plasticity, the third invariant of the stress tensor, indicator of stress, three-dimensional stress state

Abstract

The purpose of the real work is hypothesis check about uniform for various intense conditions to the chart of plasticity and development of ways of the accounting of influence of the volume scheme of a tension on plasticity. Design/methodology/approach. Methodology of construction of diagrams of plasticity is offered taking into account relative influence of the third invariant of tensor of tensions on plasticity. It is shown that the known diagrams of plasticity, reflecting dependence of the accumulated deformations to destruction from the dimensionless indexes of the tense state depend on the chart of the tense state, in particular from the third invariant of tensor or stress deviator. Its influence is offered to be considered in tension parameter.Influence of the third invariant of tensor of tensions on plasticity explains the fact " of anomalous" increase of plasticity in the conditions of biaxial and monaxonic tension. Findings. When studying technological processes of processing of metals by pressure where the volume tension is realized it is necessary to use the chart of the plasticity constructed taking into account the third invariant of a tensor of tension.

Author Biography

В. А. Огородников, Vinnitsa National Technical University, Vinnitsa

Student

References

Ogorodnikov V. A. Ocenka deformiruemosti metallov pri obrabotke davleniem [Assessment of deformability of metals when processing by pressure]. Kyiv, 1983. 175 p.

V.A.Ogorodnikov, I. Ju. Kirica, V. I. Muzychu. Udoskonalennja procesіv і obladnannja obrobki tiskom v metalurgії і mashinobuduvannі: Zb. nauk. pr. [An improvement of processes and equipment of treatment pressure are in metallurgy and engineer: Collected papers]. Kramatorsk, 2006. pp. 251–255.

Dell H.;Gese H. Kepler L. Werner H. and Hooputra H.: Continuos Failure Prediction Model for Nonlinear Load Paths in Successive Stamping and Crash Processes, SAE - Paper 2001, 01-1131, New Sheet Steel Produkts and Steet Metal Stamping (SP – 1614), SAE 2001 world Congress, Michigan, march 5-8,2001, pp. 113–122.

Published

2015-08-27

Issue

Section

Статті