Fatigue life prediction and optimization of pipeline under random loads

DOI

10.2991/icmmse-16.2016.60How to use a DOI?

Keywords

Pipeline, Power spectrum density, Random vibration, Fatigue

Abstract

Estimation of the fatigue life of pipelines under the random load was carried out. The power spectrum density of the stress on the dangerous location was calculated by the finite element method. The frequency method was implemented into the vibration fatigue life prediction. The applicability of the four models of the direct frequency method was analysis, which compare with the indirect frequency method. The results show that power spectrum density of the stress has the characteristic of two peaks. The probability density function of the stress amplitude calculated by different model have great differences. The application of the Dirlik model and ZB model get the reasonable value of the fatigue life. The fatigue life of the pipeline was optimized by changing the value of the fillet.

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  - Zhong-lei Du
PY  - 2016/03
DA  - 2016/03
TI  - Fatigue life prediction and optimization of pipeline under random loads
BT  - Proceedings of the 2016 International Conference on Mechanics, Materials and Structural Engineering
PB  - Atlantis Press
SP  - 354
EP  - 360
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmse-16.2016.60
DO  - 10.2991/icmmse-16.2016.60
ID  - Du2016/03
ER  -