### Abstract

Hitherto the quantification of material properties of a material
submitted to a deformation has been taken as a function of one or
more internal variables. When making measurements of yield
properties as a function of a deformation a convenient way of
describing the deformation in an experiment is to describe the
total strain history as a curve in the 6-dimensional shear strain,
normal strain space. In order to be able to use these experimental
data for calculation, the development of this strain curve must be
transformed into a set of scalar relations that may be used for
predicting the yield surface at a given point in a new strain
history. A simple example of this concept is to take the length of
the strain curve as describing scalar relation: E.g. to use the
equivalent strain as parameter for describing the yield stress.
This paper focuses on the strain curve concept and the
possibilities to convert this curve into useful scalar relations
from experimental data.The strain history for plane strain when
assuming volume constancy may be plotted in a shear strain, normal
strain diagram, which has the property of showing both the
rotation of principal deformation axes during the deformation and
the amount of accumulated equivalent strain. This strain diagram
makes the basis for the development of concepts for converting the
strain path curve into scalar variables.

Original language | English |
---|---|

Title of host publication | Proceedings of BAMFAC '98 |

Place of Publication | Vilnius |

Publisher | Vilnius |

Publication date | 1998 |

Pages | 5-11 |

Publication status | Published - 1998 |

Event | BAMFAC '98 - Vilnius Duration: 1 Jan 1998 → … |

### Conference

Conference | BAMFAC '98 |
---|---|

City | Vilnius |

Period | 01/01/1998 → … |

## Cite this

Nielsen, M. S., & Wanheim, T. (1998). MM98.57 Quantification of Combined Strain Paths. In

*Proceedings of BAMFAC '98*(pp. 5-11). Vilnius.