A new method of fitting

DOI

10.2991/imst-16.2016.24How to use a DOI?

Keywords

<i>P-S-N</i> curve; ultrahigh strength sucker rod; correlation coefficient; nonlinear fitting.

Abstract

It is commonly believed that the fatigue life and cyclic stress is logarithm linear dependence when fitting P-S-N curve, but data of fatigue tests indicate that the linear correlation isn't evident for ultrahigh strength sucker rod. It is necessary to present a new fitting method. The scatter diagram of lgSP and lgNP is fitted by several nonlinear models in SPSS, and the model S has the highest goodness of fitting. Finally modified equations of P-S-N curve for ultrahigh strength sucker rod are obtained.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yuangang Xu
AU  - Fanfan Hao
PY  - 2016/11
DA  - 2016/11
TI  - A new method of fitting
BT  - Proceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016)
PB  - Atlantis Press
SP  - 164
EP  - 169
SN  - 1951-6851
UR  - https://doi.org/10.2991/imst-16.2016.24
DO  - 10.2991/imst-16.2016.24
ID  - Xu2016/11
ER  -