基于功率流的复合材料层合板连接节点振动传递特性

武大江; 梅志远; 周振龙

doi:10.19693/j.issn.1673-3185.02527

基于功率流的复合材料层合板连接节点振动传递特性

doi: 10.19693/j.issn.1673-3185.02527

海军工程大学舰船与海洋学院，湖北武汉 430033

基金项目: 国家自然科学基金资助项目（51609252，51479205）

详细信息

作者简介:
武大江，男，1990年生，博士生，助理工程师。研究方向：舰船结构强度与振动。E-mail：tlbsjagk@sina.com

梅志远，男，1973年生，博士，教授，博士生导师。研究方向：船用复合材料结构设计与应用。E-mail：zhiyuan_mei@163.com

通信作者:
梅志远

中图分类号: U663.9⁺9
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出版历程
- 收稿日期: 2021-09-14
- 修回日期: 2022-01-04
- 网络出版日期: 2023-04-06
- 刊出日期: 2023-04-28

Vibration transmission characteristics of composite laminate joints based on power flow

College of Naval Architecture and Ocean Engineering, Naval University of Engineering, Wuhan 430033, China

基于功率流的复合材料层合板连接节点振动传递特性由武大江，等创作，采用知识共享署名4.0国际许可协议进行许可。

摘要

摘要: 目的为了研究复合材料层合板连接节点的振动传递特性，提出一种采用有限元功率流法并结合功率流可视化技术的分析方法。方法首先，验证用有限元实体单元功率流描述板壳振动的有效性；然后，引入功率流传递率评价指标，提出有限元模型功率流传递率的计算方法，并以导纳功率流法计算结果为参照来验证其有效性；最后，建立嵌入式连接和螺钉连接这2种复合材料层合板的连接模型，计算其功率流传递率曲线和典型功率流矢量图。结果对比验证结果表明，2种连接模型的振动传递路径和功率流传递率存在明显差异。结论有限元功率流法直观反映了连接结构的振动传递能力及振动能量传递路径，可为复合材料结构设计提供参考。
- 复合材料层合板 /
- 连接结构 /
- 功率流 /
- 振动传递 /
- 有限元法
Abstract: Objectives In order to investigate the influence of joints in composite laminate plates on the vibration transfer characteristics of structures, this study uses power flow based on the finite element method (FEM) and a related visualization technique. Methods First, a method that describes plate vibration by power flow in solid elements is proven to be feasible, then power flow transmission efficiency is introduced and a method of calculating it in a finite element model is proposed and verified by the admittance power flow method. Finally, two joint simulations of embedded joints and screw joints are obtained, as well as the power flow transmission efficiency curve and typical power flow vector diagram. Results The results show significant differences in vibration transmission and power flow transmission efficiency between the two models. Conclusions Power flow based on FEM can directly reflect the vibration energy transmission path of a connected structure, which can provide useful references for the design of composite structures.
- composite laminates /
- connecting structures /
- power flow /
- vibration transmission /
- finite element method

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图 1 功率流矢量图对比

Figure 1. Comparison of power flow cloud pictures

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图 2 L形板有限元模型

Figure 2. Finite element model of L-shaped plate

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图 3 功率流传递率对比

Figure 3. Comparison of power transmission efficiency

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图 4 连接截面示意图

Figure 4. Section diagram of the connecting structure

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图 5 复合材料层合板连接有限元模型

Figure 5. Finite element model of two composite laminate connection structure

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图 6 功率流传递率对比

Figure 6. Comparison of power transmission efficiency

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图 7 振动位移云图

Figure 7. Displacement contours of structural vibration

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图 8 螺钉连接形式的功率流分析

Figure 8. Power flow analysis of screw joints

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图 9 功率流矢量图对比

Figure 9. Comparison of power flow vector diagram

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图 10 等长功率流矢量图对比

Figure 10. Comparison of uniform power flow vector diagram

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表 1 面板材料属性

Table 1. Material properties of composite panel

属性名称数值

E₁，E₂ /GPa 18.5
E₃/GPa 6
μ₁₂ 0.12
μ₁₃，μ₂₃ 0.3
G₁₂/GPa 3.75
G₁₃，G₂₃/GPa 6.75

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