潜艇推进轴系纵向振动模型与解析研究

徐达; 韩保红; 赫万恒; 于金凤; 李维锴

doi:10.3969/j.issn.1673-3185.2018.02.018

潜艇推进轴系纵向振动模型与解析研究

Longitudinal vibration model and analytic study of submarine propulsion shafting

摘要

摘要:
目的为了解决潜艇推进轴系纵向振动问题，
方法将复杂的潜艇推进轴系简化为均匀阶梯轴系连续模型，采用波分析（WPA）法对各均匀轴段的纵向振动传递关系进行推导。结合实际推进轴系边界条件，给出推进轴系纵向振动在螺旋桨激励下的稳态响应。进一步对推进轴系纵向振动的第1阶固有频率的无量纲公式进行推导，并分析结构参数对固有频率的影响。
结果将理论计算值与有限元软件仿真结果及实验测试值进行对比，证明了均匀阶梯轴系连续模型的可靠性，可应用于推进轴系纵向振动研究分析。得到的第1阶无量纲公式为后续对潜艇推进轴系纵向振动的分析打下基础。
结论研究成果具有一定的工程应用价值。

Abstract:
Objectives In order to solve the problem of the longitudinal vibration of submarine propulsion shafting,
Methods complex submarine propulsion shafting is simplified to a uniform stepped shaft continuum model, Wave Propagation Analysis (WPA) is used and the longitudinal vibration transfer relationship of each axis is deduced. Combined with the actual propulsion shafting boundary conditions, the steady state response of propeller shaft longitudinal vibration under propeller excitation is obtained.
Results The reliability of the model is verified by comparing the theoretical calculated value with the finite element software simulation results and experimental test data, proving that it can be used for the longitudinal vibration analysis of propulsion shafting. Dimensionless formulas for the first natural frequency of the longitudinal vibration of submarine propulsion shafting are deduced, providing convenience for further analysis.
Conclusions The results have definite value for engineering applications.

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