Vibration Characteristics of Compact Hydraulic System Pipelines Based on Two-way Fluid- structure Interaction

Authors

• Lichen Shi, School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China
• Xujia Feng, School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China
• Weitao Dou, School of Aerospace Manufacturing Engineering, Xi'an Aeronautical Vocational and Technical College, Xi'an 710089, China
• Yanyan Li, School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China

Abstract

Abstract: Amid growing demands for green manufacturing, equipment miniaturization, and high efficiency, compact hydraulic systems are critical in disassembly, assembly, and transport operations due to their high power density and flexibility. However, severe vibration in the pipeline systems significantly compromises equipment reliability. This study investigates the dynamic response mechanism of a compact on-board hydraulic pipeline system, using a specific piece of disassembly and assembly equipment with spatially constrained clamp placement as a case study, through a two-way fluid-structure interaction method, and optimizes the clamp layout. The results show that resonance occurs when the excitation frequency of the hydraulic oil pressure pulsation approaches the pipeline's natural frequency. Furthermore, the vortex intensity distribution in the flow field exhibits a positive correlation with the stress concentration areas on the pipe wall. Differences in the primary vibration mechanisms were identified across pipeline sections, and the configuration of vortex structures was directly linked to the vibration intensity, indicating that the unsteady load induced by vortex evolution is the primary excitation source. This research provides a theoretical basis for vibration control and optimal clamp arrangement in minimally constrained compact hydraulic systems.

Recommended Citation

Shi, Lichen; Feng, Xujia; Dou, Weitao; and Li, Yanyan (2026) "Vibration Characteristics of Compact Hydraulic System Pipelines Based on Two-way Fluid- structure Interaction," Journal of System Simulation: Vol. 38: Iss. 9, Article 15.
DOI: 10.16182/j.issn1004731x.joss.25-1043
Available at: https://dc-china-simulation.researchcommons.org/journal/vol38/iss9/15

First Page

2659

Last Page

2675

CLC

O353.4; TP391.9

Recommended Citation

Shi Lichen, Feng Xujia, Dou Weitao, et al. Vibration Characteristics of Compact Hydraulic System Pipelines Based on Two-way Fluid-structure Interaction[J]. Journal of System Simulation, 2026, 38(9): 2659-2675.

Corresponding Author

Feng Xujia

DOI

10.16182/j.issn1004731x.joss.25-1043