Design and stress optimization analysis of a bellows dynamic vibration absorber with variable parameters for oil pipelines

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (10) : 191-197.

VIBRATION THEORY AND INTERDISCIPLINARY RESEARCH

Design and stress optimization analysis of a bellows dynamic vibration absorber with variable parameters for oil pipelines

YE Mao*

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Abstract

The bellows vibration absorber has important application value in vibration and noise reduction of oil and gas pipelines. The aperiodic bellows with variable parameters can improve the fatigue life of the vibration absorber to a certain extent while ensuring the vibration reduction performance through structural optimization, but there is still a lack of effective theoretical calculation methods for the mechanical properties of the variable parameter bellows. Aiming at the bellows vibration absorber structure with variable circular radius, the plate-shell model is established, and the stiffness and stress of the bellows is given through the governing equations and connection conditions of the circular plate and circular shell. Then, the accuracy of the plate -shell model is verified through the comparison with both of the finite element and literature results. Finally, for the aperiodic bellows structure with variable parameters, the influence of the circular radius of bellows on the stress is analyzed. The research results show that the larger the radius of the circular shell, the smaller the total normal stress caused by the membrane internal force and bending moment in the meridian plane, which is beneficial to improve the fatigue life of the vibration absorber. The relevant research results of this research can provide effective theoretical supporting for the structural design and optimization of the bellows vibration absorber with variable parameters.

Key words

dynamic vibration absorber / bellows / oil pipelines / plate-shell model / mechanics properties

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YE Mao. Design and stress optimization analysis of a bellows dynamic vibration absorber with variable parameters for oil pipelines[J]. Journal of Vibration and Shock, 2025, 44(10): 191-197

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