Abstract
To reduce the vibration of a ship’s high-temperature pipeline, a long coated damping structure (LCDS) with entangled metallic wire material (EMWM) is proposed in this paper. The structural analysis of the long coated damping structure for pipelines is carried out. The theoretical analysis indicates that increasing the thickness of the damping layer in a particular range can improve the vibration attenuation effect of an LCDS. Additionally, experimental verification confirms this analysis after an experimental system for pipelines. From the results, it is observed that increasing the thickness of the coated layer can effectively improve the damping property of LCDS to a certain extent. The change of the coated length and the temperature has little effect on the vibration attenuation effect of an LCDS, indicating that the LCDS can work well in a high-temperature environment.
Highlights
As an essential part for transporting fuel and other fluids in ships, pipelines often vibrate due to mechanical structure excitation and internal fluid excitation
Before measuring the vibration attenuation effect of the long cladding damping structure, it was necessary to perform a modal analysis of the rigid pipeline for the subsequent discussion of the coating position and the analysis of the test results
In order to obtain the modal shape of the pipeline, the finite element modal analysis (FEMA) was conducted by the finite element analysis software Abaqus®
Summary
As an essential part for transporting fuel and other fluids in ships, pipelines often vibrate due to mechanical structure excitation and internal fluid excitation. It affects the accuracy and service life of precision instruments in ships and jeopardizes workers’ health. Fang et al [1] found that coating a layer of damping material on the surface of the liquid-filled pipeline can effectively reduce the vibration and noise radiation of pipelines. Kiryukhin et al [7] studied the vibration transmission of the liquid pipeline compensator and proposed a method to reduce the vibration transmission through the joint action of structure and medium pulsation. EMWM is a damping material constructed of Academic Editor: José Correia
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