基于振动特性的点阵桁架夹心板损伤检测数值模拟

基金项目:

国家973资助项目(2006CB601206, 2007CB707702)

自然科学基金资助项目(50677049)

教育部新世纪人才资助项目

详细信息

Numerical Simulation on Damage Identification Using Vibration Signals for Lattice Truss Sandwich Plate

摘要: 研究了基于振动特性的点阵桁架夹心板损伤识别。首先, 通过与已有的结果对比, 验证了点阵桁架夹心板有限元模型的正确性。然后, 基于此模型对包含不同位置不同程度脱焊损伤的点阵桁架夹心板的固有频率和模态振型进行了计算和比较, 分析了脱焊损伤与结构固有频率、模态振型之间的关系。研究结果为进一步进行点阵桁架夹心板脱焊损伤检测奠定了基础。
- 点阵桁架夹心板 /
- 脱焊损伤 /
- 固有频率 /
- 模态振型
Abstract: A numerical study for vibration based lattice truss structural damage identification was presented. Firstly, the validity of the numerical model was verified by comparing the calculated results with those of other researchers. Then, based on this model, vibration behaviors were simulated for delamination damages of different locations and different damage degree, and the relationship between delamination damage and natural frequencies and modal shapes was analyzed. The research results laid a foundation for the further study of the delamination damage inspection of lattice truss sandwich plate.
- Lattice truss sandwich plate /
- Delamination damage /
- Natural frequencies /
- Modal shapes

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