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ПЛАСТИЧНОСТЬ МЕТАЛЛОВ ПРИ ОБЪЕМНОМ НАПРЯЖЕННОМ СОСТОЯНИИ

ПЛАСТИЧНОСТЬ МЕТАЛЛОВ ПРИ ОБЪЕМНОМ НАПРЯЖЕННОМ СОСТОЯНИИ

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.

Показано, что известные диаграммы пластичности, которые отображают зависимость накопленных деформаций до разрушения от безразмерных показателей напряженного состояния зависят от схемы напряженного состояния, в частности от третьего инварианта тензора или девиатора напряжений. Влияние третьего инварианта тензора напряжений на пластичность объясняет факт "аномального" повышения пластичности в условиях двухосного и одноосного растяжения. Предложена методика получения диаграмм пластичности, которые учитывают относительное влияние третьего инварианта тензора напряжений на пластичность.

Показано, що відомі діаграми пластичності, що відображають залежність накопичених деформацій доруйнування від безрозмірних показників напруженого стану залежать від схеми напруженого стану, зокрема від третього нваріанту тензора або девіатора напруги.Вплив третього інварианту тензора напруги на пластичність пояснює факт "аномального" підвищенняпластичності в умовах двовісного і одновісного розтягування. Запропонована методика отримання діаграм пластичності, що враховують відносний вплив третього інваріанта тензора напруг на пластичність

Keywords

диаграмма пластичности; третий инвариант тензора напряжений; показатель напряженного состояния; объемное напряженное состояние, діаграма пластичності; третій інваріант тензора напружень; показник напруженого стану; об'ємний напружений стан, diagram of plasticity; the third invariant of the stress tensor; indicator of stress; three-dimensional stress state

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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