Work

A study of the vibration response of double-layer cylindrical shells based on the similarity principle

Year: 2025

Type: article

Abstract: To address the challenges associated with conducting large-scale and complex acoustic vibration experiments on dual-layer cylindrical shells, which are both difficult and costly, this paper proposes a method that predicts the vibrational response of a full-scale dual-layer cylindrical shell using the vibrational response of a single-layer scaled-down model. Finite element models of both the full-scale dual-layer cylindrical shell and its scaled-down counterpart were developed using Virtual.Lab Acoustic software. The vibrational responses of these models were analyzed within the 100–500 Hz frequency range, and a comparative analysis was conducted to validate the accuracy of the scaling method and the similarity of vibrational responses. The results indicate that the displacement ratio between the scaled-down model and the original model aligns closely with the geometric scaling factor. Furthermore, the similarity coefficients of the vibrational responses for both the inner and outer shells of the scaled-down model exceed 0.9, confirming the effectiveness of the proposed approach.

Source: Journal of Mechanics

DOI: 10.1093/jom/ufaf014

Authors: Bin Li, Hao Zhao, Langlang Wei, Peng Wang, Zhigang Hu, Dandan Fu

Institutions: Wuhan Polytechnic University, Wuhan Ship Development & Design Institute

Language: English

Topic: Vibration and Dynamic Analysis

Subfield: Control and Systems Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,800

Funders: Natural Science Foundation of Hubei Province, Wuhan Polytechnic University, Fundamental Research Funds for the Central Universities