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| 复杂边界条件下复合材料尾轴结构振动特性分析 |
| Vibration Characteristics Analysis of Composite Tail-Shaft Structures Under Complex Boundary Conditions |
| 投稿时间：2025-04-30 修订日期：2025-05-26 |
| DOI： |
| 中文关键词: 复杂边界 复合材料尾轴结构 虚拟弹簧技术 谱几何方法 |
| 英文关键词:complex boundary composite tail-shaft structure virtual spring technique spectro-geometric method. |
| 基金项目:无. |
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| 中文摘要: |
| 针对具有复杂边界条件的复合材料尾轴结构自由振动问题,本文将飞机的尾轴结构抽象等效为圆柱壳结构,并通过联合一阶剪切变形理论和虚拟弹簧技术,以及基于谱几何方法表征结构的位移函数,最终建立复合材料尾轴结构在考虑各种边界条件下的等效动力学分析模型。将现有方法得到的计算结果与仿真结果进行对比,以验证所建立等效分析模型的有效性。随后进一步开展了相关的机理研究,分析了包括边界弹簧刚度值以及复合材料参数的变化对于复合材料尾轴结构自由振动的影响规律。 |
| 英文摘要: |
| This study addressed the free vibration problem of composite tail-shaft structure with complex boundary conditions. The aircraft tail shaft was abstracted and equivalently modeled as cylindrical shell structure. By integrating First-order Shear Deformation Theory and virtual spring technique, the displacement field was analytically described using the spectro-geometric method, ultimately establishing the equivalent dynamic analysis model for the composite tail-shaft structure under various boundary conditions. The validity of the proposed model was verified by comparing its computational results with those obtained from existing methods and numerical simulations. Subsequent mechanistic investigations were conducted to systematically analyze the influence of boundary spring stiffness values and composite material parameters on the free vibration characteristics of the composite tail-shaft structure. |
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