Stress distribution and fracture parameters of orthotropic bi-material notches determination

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F14%3APU113537" target="_blank" >RIV/00216305:26620/14:PU113537 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Stress distribution and fracture parameters of orthotropic bi-material notches determination

Popis výsledku v původním jazyce

A bi-material notch composed of two orthotropic parts leads to stress singularity different from the single material notch case. The stress field around a bi-material notch inherently covers combined normal and shear modes of loading. Theory of anisotropic elasticity - the Lekhnitskii-Eshelby-Stroh formalism is employed as an elegant method to express the stress and displacement fields. The stress distribution at the notch tip is characterised by exponents of singular terms and general stress intensity factors. The exponents of singularity and corresponding eigenvectors are solution of the eigenvalue problem resulting from the prescribed boundary conditions. The generalised stress intensity factors are calculated by usage of the two state conservation integrals so called Psi-integrals. Based on knowledge of these parameters the minimum value of mean strain energy density factor to predict crack initiation direction is obtained. Then the critical value of generalised stress intensity factor correspondi

Název v anglickém jazyce

Stress distribution and fracture parameters of orthotropic bi-material notches determination

Popis výsledku anglicky

A bi-material notch composed of two orthotropic parts leads to stress singularity different from the single material notch case. The stress field around a bi-material notch inherently covers combined normal and shear modes of loading. Theory of anisotropic elasticity - the Lekhnitskii-Eshelby-Stroh formalism is employed as an elegant method to express the stress and displacement fields. The stress distribution at the notch tip is characterised by exponents of singular terms and general stress intensity factors. The exponents of singularity and corresponding eigenvectors are solution of the eigenvalue problem resulting from the prescribed boundary conditions. The generalised stress intensity factors are calculated by usage of the two state conservation integrals so called Psi-integrals. Based on knowledge of these parameters the minimum value of mean strain energy density factor to predict crack initiation direction is obtained. Then the critical value of generalised stress intensity factor correspondi

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20306 - Audio engineering, reliability analysis

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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