Publication detail

Crack stability condition at the interface between two polymer materials

ZOUHAR, M. HUTAŘ, P. NÁHLÍK, L. ŠEVČÍK, M. KNÉSL, Z.

English title

Crack stability condition at the interface between two polymer materials

Type

Paper in proceedings (conference paper)

Language

en

Original abstract

The aim of this work is to study the behaviour of crack with its tip at the interface of two polymer materials. The numerical model of cracked bi-material tension specimen is investigated and a stability criterion was tested. Usually a stability criterion based on general stress concentrator needs the relation between critical value of the generalized stress intensity factor and critical value of the stress intensity factor (fracture toughness). This relation is a function of elastic mismatch between particular materials, fracture toughness of the main material and critical distance d. Estimation of d is usually not straightforward and different authors use different approaches for its determination. Therefore main aim of this study is mutual comparison of published approaches for d estimation and to quantify their effect on the critical loading value. The results of this study can lead to better lifetime prediction and design of layered structures.

Keywords in English

stability criterion, critical distance, bi-material, generalized stress intensity factor

Released

2011-04-18

ISBN

978-80-87434-03-1

Book

Applied mechanics 2011 conference proceedings

Pages from–to

247–250

Pages count

4

BIBTEX


@inproceedings{BUT76022,
  author="Michal {Zouhar} and Pavel {Hutař} and Luboš {Náhlík} and Martin {Ševčík} and Zdeněk {Knésl}",
  title="Crack stability condition at the interface between two polymer materials",
  booktitle="Applied mechanics 2011 conference proceedings",
  year="2011",
  pages="247--250",
  isbn="978-80-87434-03-1"
}