Optimal Transport Meshless Method Based Fatigue Life Calculation Method for Hydraulic Pipelines under Combined Excitation

The issue of fatigue in modern hydraulic pipelines is increasingly severe, and there remains a lack of effective prediction methods for pipeline fatigue life. In practical engineering, hydraulic pipelines are primarily subjected to random excitation and fluid excitation, representing a typical compo...

Full description

Saved in:
Bibliographic Details
Published inApplied sciences Vol. 14; no. 6; p. 2592
Main Authors Li, Wujia, Fan, Jiang, Xu, Hongbin, Zhao, Wang, Meng, Qingze, Su, Yumin
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2024
Subjects
Aircraft
aircraft engines
Analysis
Aviation
compound incentives
Fatigue
fatigue life
Fatigue testing machines
fluid–structure interaction
Hydraulics
Materials
meshless method
Methods
Neighborhoods
Random vibration
Vibration analysis
China
Online AccessGet full text

Cover

More Information
Summary:The issue of fatigue in modern hydraulic pipelines is increasingly severe, and there remains a lack of effective prediction methods for pipeline fatigue life. In practical engineering, hydraulic pipelines are primarily subjected to random excitation and fluid excitation, representing a typical composite excitation. Most current research relies on solutions considering only single excitations, which leads to inaccuracies. To accurately calculate the fatigue life under composite excitation, this study incorporates resonance excitation and pulsation excitation into the optimal transport meshless method (OTM) within a strong fluid–structure coupling computational framework. Subsequently, by utilizing the hazard point method based on obtained stress data, an estimation of the service life for engine hydraulic lines can be determined. This work provides both practical guidance and theoretical insights for designing hydraulic lines in modern aircraft.
ISSN:2076-3417
2076-3417
DOI:10.3390/app14062592