Detail publikace
Experimentálně výpoštová analýza zkoušek soudržnosti
BURŠA, J.
Český název
Experimentálně výpoštová analýza zkoušek soudržnosti
Anglický název
Experimental-Computational analysis of Cohesion Tests
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
The paper compares various types of cohesion tests used in testing of adhesive connection of two materials. The computational modelling using FEM confirms that all the usual or normalized cohesion strength tests result in a pronounced stress concentration in some part of the contact surface of both materials. This concentration disables any evaluation of limit values of quantities crucial for decohesion of the materials and the tests differing in a single geometric parameter of the test sample cannot be compared. The authors suggest torsion tests as more convenient for cohesion strength tests. The computational simulation of the test using hyperelastic FEA showed, that no stress concentration occurs in this type of test and the stress state is homogeneous on all the contact surface. This fact enables a simple evaluation of shear stress in the test. The evaluated limit shear stress should be the material characteristic of the cohesion strength. Some few examples were realized to verify this tests.
Český abstrakt
Experimentálně výpoštová analýza zkoušek soudržnosti
Anglický abstrakt
The paper compares various types of cohesion tests used in testing of adhesive connection of two materials. The computational modelling using FEM confirms that all the usual or normalized cohesion strength tests result in a pronounced stress concentration in some part of the contact surface of both materials. This concentration disables any evaluation of limit values of quantities crucial for decohesion of the materials and the tests differing in a single geometric parameter of the test sample cannot be compared. The authors suggest torsion tests as more convenient for cohesion strength tests. The computational simulation of the test using hyperelastic FEA showed, that no stress concentration occurs in this type of test and the stress state is homogeneous on all the contact surface. This fact enables a simple evaluation of shear stress in the test. The evaluated limit shear stress should be the material characteristic of the cohesion strength. Some few examples were realized to verify this tests.
Klíčová slova anglicky
Cohesion strength, torsion test, computational modelling, limit state.
Rok RIV
2002
Vydáno
13.05.2002
Nakladatel
Institute of Mechanics of Solids Faculty of Mechanical Engineering Brno University of Technology
Místo
Svratka, ČR
ISBN
80-214-2109-6
Kniha
Inženýrská mechanika 2002 Engineering Mechanics 2002
Počet stran
2
BIBTEX
@inproceedings{BUT10205,
author="Jiří {Burša},
title="Experimental-Computational analysis of Cohesion Tests",
booktitle="Inženýrská mechanika 2002 Engineering Mechanics 2002",
year="2002",
month="May",
publisher="Institute of Mechanics of Solids
Faculty of Mechanical Engineering
Brno University of Technology",
address="Svratka, ČR",
isbn="80-214-2109-6"
}