期刊论文

Xu, F

英文

Applied Mathematical Modelling

0307-904X

2025

140

115889

10.1016/j.apm.2024.115889

This work is supported by the Natural Science Foundation of Hunan Province (Project No. 2021JJ40448 ), and the Scientific Research Project for Excellent Young Scholars of Education Department of Hunan Province (Project No. 23B0417). CRediT authorship contribution statement Tianlin Wang: Writing – original draft, Software, Investigation, Data curation. Feng Xu: Writing – review & editing, Validation, Methodology, acquisition, Formal analysis, Data curation, Conceptualization. Changqing Guo: Visualization, Supervision, Software, Methodology. Chenzhou Fan: Writing – review & editing, Software.

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In practical engineering, the unilateral gap constraint impact vibration in fluid-conveying pipes is a critical concern, often arising from constraint loosening or the presence of barriers around the pipe. These factors can significantly affect the service life and safety reliability of the pipes. A tension and compression anisotropy spring with rapidly increasing restoring force in compression but almost zero restoring force in tension is proposed to simulate the unilateral gap constraint, model a fluid-conveying pipe with a Pfluger column. Its reliability is also verified based on the bifurc...