Stress coupling effect on ideal shear strength: tungsten as a case study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU121234" target="_blank" >RIV/00216305:26620/16:PU121234 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.hindawi.com/journals/amse/2016/5317985/" target="_blank" >https://www.hindawi.com/journals/amse/2016/5317985/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1155/2016/5317985" target="_blank" >10.1155/2016/5317985</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stress coupling effect on ideal shear strength: tungsten as a case study

Popis výsledku v původním jazyce

Mechanical response of a perfect bcc tungsten crystal to a multiaxial loading was investigated from first principles. The multiaxial stress state consisted of the shear stress and a superimposed compressive triaxial stress with various levels of differential stresses. The studied shear system was 〈111〉{110}. Results obtained within a relatively wide range of the compressive stresses showed that increasing hydrostatic triaxial stress (with zero differential stresses) increased the shear strength almost linearly. On the other hand, triaxial stresses with greater portion of the differential components did not have such a simple effect on the shear strength: We found a certain optimum value of the superimposed triaxial stress yielding the maximum shear strength. Any change (both increase and decrease) in the triaxial stress then reduced the ideal shear strength value.

Název v anglickém jazyce

Stress coupling effect on ideal shear strength: tungsten as a case study

Popis výsledku anglicky

Mechanical response of a perfect bcc tungsten crystal to a multiaxial loading was investigated from first principles. The multiaxial stress state consisted of the shear stress and a superimposed compressive triaxial stress with various levels of differential stresses. The studied shear system was 〈111〉{110}. Results obtained within a relatively wide range of the compressive stresses showed that increasing hydrostatic triaxial stress (with zero differential stresses) increased the shear strength almost linearly. On the other hand, triaxial stresses with greater portion of the differential components did not have such a simple effect on the shear strength: We found a certain optimum value of the superimposed triaxial stress yielding the maximum shear strength. Any change (both increase and decrease) in the triaxial stress then reduced the ideal shear strength value.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advances in Materials Science and Engineering

ISSN

1687-8434

e-ISSN

1687-8442

Svazek periodika

2016

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

„5317985-1“-„5317985-5“

Kód UT WoS článku

000390570000001

EID výsledku v databázi Scopus

2-s2.0-85008686943