Application of the sacks boring-out and finite element techniques to the measurement of residual stresses in oxygen free high conductivity-cu tubes

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Abstract

In the first phase of this study, a modified Electrochemical Machining (ECM) process was utilized in conjunction with the Sacks boring-out technique in order to experimentally measure the residual stress patterns throughout the walls of cold-drawn OFHC copper tubes representing 10.9% reduction (1/4 hard). ECM proved to be particularly suitable for this type of study due to its constant mass removal rate and its accuracy for material removal without disturbing the internal stress distributions. Principal residual stresses were determined and the effective stress distribution is presented and compared to the materials yield stress. In the second phase of this study, an elasto-plastic finite element code was employed to simulate the drawing process by which the tubes were manufactured. The finite element model, and the resulting residual stress distributions are presented and compared to the experimental results. Both techniques resulted in a pattern of residual stresses which were of compressive nature near the inner surface, and tensile at the outer surface of the tube.

Original languageEnglish
Title of host publicationFirst International Conference on Processing Materials for Properties
PublisherPubl by Minerals, Metals & Materials Soc (TMS)
Pages1039-1043
Number of pages5
ISBN (Print)0873392566
StatePublished - 1993
EventProceedings of the 1st International Conference on Processing Materials for Properties - Honolulu, HI, USA
Duration: Nov 7 1993Nov 10 1993

Publication series

NameFirst International Conference on Processing Materials for Properties

Conference

ConferenceProceedings of the 1st International Conference on Processing Materials for Properties
CityHonolulu, HI, USA
Period11/7/9311/10/93

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    Rasty, J. (1993). Application of the sacks boring-out and finite element techniques to the measurement of residual stresses in oxygen free high conductivity-cu tubes. In First International Conference on Processing Materials for Properties (pp. 1039-1043). (First International Conference on Processing Materials for Properties). Publ by Minerals, Metals & Materials Soc (TMS).