基于分形理论的膜片联轴器动力学建模方法

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (15) : 85-91.

振动理论与交叉研究

基于分形理论的膜片联轴器动力学建模方法

高帅帅，温华兵*，郭俊华，黄鹏，袁孟豪，周高峰

作者信息 +

Dynamic modeling method of diaphragm coupling based on fractal theory

GAO Shuaishuai, WEN Huabing*, GUO Junhua, HUANG Peng, YUAN Menghao, ZHOU Gaofeng

Author information +

文章历史 +

摘要

针对多层弹性膜片螺栓连接件动力学特性的有限元建模难题，采用分区域薄层单元等效建模方法，提出一种可以精准计算出分区域薄层单元各区域材料参数的方法。以船用推进轴系中的膜片联轴器为例，通过对比试验和仿真的模态和振级落差等动力学特性，验证简化模型的准确性。研究结果表明：分区域薄层单元建模方法可以有效地对考虑螺栓预紧力作用下的膜片联轴器动力学模型简化建模，基于分形理论构建的粗糙表面可以准确计算出螺栓结合部接触刚度，并通过其计算出的分区域薄层单元材料参数可以准确分析多层弹性膜片螺栓连接件的动力学特性。

Abstract

Aiming at the finite element modeling problem of the dynamic characteristics of multilayer elastic diaphragm bolted joints, a method of equivalent modeling of subarea thin-layer elements is adopted, and a method is proposed to accurately calculate the material parameters of each area of subarea thin-layer elements. Taking the diaphragm coupling in the marine propulsion shaft system as an example, the accuracy of the simplified model is verified by comparing the dynamics of modal and vibration level drop between test and simulation. The research results show that: The research results show that: the subarea thin-layer elements modeling method can effectively simplify the modeling of the dynamic model of the diaphragm coupling under the consideration of bolt preload, the rough surface constructed on the basis of the fractal theory can accurately calculate the contact stiffness of the bolt joint, and the material parameters of the subarea thin-layer elements calculated by it can accurately analyze the dynamic characteristics of the multilayer elastic diaphragm bolted couplings.

导出引用

高帅帅, 温华兵, 郭俊华, 黄鹏, 袁孟豪, 周高峰. 基于分形理论的膜片联轴器动力学建模方法[J]. 振动与冲击, 2025, 44(15): 85-91

GAO Shuaishuai, WEN Huabing, GUO Junhua, HUANG Peng, YUAN Menghao, ZHOU Gaofeng. Dynamic modeling method of diaphragm coupling based on fractal theory[J]. Journal of Vibration and Shock, 2025, 44(15): 85-91

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