Publication detail
THE INFLUENCE OF CONTACT REGION ON PROBABILITY OF CERAMICS FRACTURE
KOVÁŘ, J.
English title
THE INFLUENCE OF CONTACT REGION ON PROBABILITY OF CERAMICS FRACTURE
Type
conference paper
Language
en
Original abstract
This paper focuses on assessment of probability of ceramic component fracture. The component is loaded by four point bending with different boundary conditions. The Weibull's weakest link theory, which includes the effect of first principal stress only, was chosen for calculation of probability of fracture. The stresses for calculations were evaluated numerically by finite element method. The component was discretizated by plane elements and constraints were considered in two variants. In the first variant, the constraints and loads are considered at the centerline of the rod (in accordance with rod theory). The second variant considers constraints and loads on the outer surface of the body. The contact between body and constraint (support) is considered in this variant. The influence of the radius of support on the value of probability of body fracture and the width of contact region is analyzed.
English abstract
This paper focuses on assessment of probability of ceramic component fracture. The component is loaded by four point bending with different boundary conditions. The Weibull's weakest link theory, which includes the effect of first principal stress only, was chosen for calculation of probability of fracture. The stresses for calculations were evaluated numerically by finite element method. The component was discretizated by plane elements and constraints were considered in two variants. In the first variant, the constraints and loads are considered at the centerline of the rod (in accordance with rod theory). The second variant considers constraints and loads on the outer surface of the body. The contact between body and constraint (support) is considered in this variant. The influence of the radius of support on the value of probability of body fracture and the width of contact region is analyzed.
Keywords in English
Weibull´s weakest link theory, Contact, Probability of fracture, Hertz´s theory, Ceramic
Released
15.05.2017
Publisher
Vysoké učení technické v Brně
Location
Brno
ISBN
978-80-214-5497-2
ISSN
1805-8248
Book
Engineering Mechanics 2017
Volume
23
Pages from–to
510–513
Pages count
4
BIBTEX
@inproceedings{BUT149911,
author="Jaroslav {Kovář} and Vladimír {Fuis},
title="THE INFLUENCE OF CONTACT REGION ON PROBABILITY OF CERAMICS FRACTURE",
booktitle="Engineering Mechanics 2017",
year="2017",
volume="23",
month="May",
pages="510--513",
publisher="Vysoké učení technické v Brně",
address="Brno",
isbn="978-80-214-5497-2",
issn="1805-8248"
}