Publication detail

Determination of Principal Residual Stresses Directions by Incremental Strain Method

CIVÍN, A. VLK, M.

English title

Determination of Principal Residual Stresses Directions by Incremental Strain Method

Type

Peer-reviewed article not indexed in WoS or Scopus

Language

en

Original abstract

The ring-core method is the semi-destructive experimental method used for evaluation of the homogeneous and non-homogeneous residual stresses, acting over depth of drilled core. By using incremental strain method (ISM) for the residual state of stress determination, this article describes procedure how unknown directions and magnitudes of principal residual stresses can be determined. Finite element method (FEM) is used for the numerical simulation of homogenous residual state of stress and for subsequent strain determination. Relieved strains on the top of the models core are measured by simulated three-element strain gauge, turned by the axis of strain gauge "a" from the direction of the principal stress Sig1 about unknown angle alfa. Depth dependent magnitudes of relieved strains, their differences and set of known values of calibration coefficients K1 and K2 or relaxation coefficients A and B are used together for determination of the angle alfa and for re-calculation of principal stresses.

Keywords in English

ring-core method, incremental strain method, residual stress, calibration coefficients, strain gauge

Released

2011-06-30

Publisher

University of West Bohemia, Plzeň, Czech Republic

Location

Plzeň

ISSN

1802-680X

Journal

Applied andComputational Mechanics

Volume

5

Number

1

Pages from–to

5–14

Pages count

10

BIBTEX


@article{BUT72602,
  author="Adam {Civín} and Miloš {Vlk}",
  title="Determination of Principal Residual Stresses Directions by Incremental Strain Method",
  journal="Applied andComputational Mechanics",
  year="2011",
  volume="5",
  number="1",
  pages="5--14",
  issn="1802-680X"
}