基于有限元特征频率法的各向异性复合板兰姆波特性分析

基金项目:

国家重大科学仪器与设备开发专项资助项目（2012YQ150213）；国家自然基金资助项目（61671285）

详细信息

Lamb Wave Characteristic Analysis of Anisotropic Multilayer Composite Using Finite Element Intrinsic Frequency Method

1. School of Mechatronics and Automation, Shanghai University, Shanghai 200444, China;
2. Institute of Acoustics, Tongji University, Shanghai 200092, China

摘要: 提出了一种基于有限元特征频率法求解各向异性复合板中兰姆波频散曲线的方法，可根据Floquet周期性边界条件对板结构进行简化，对于板厚方向上下对称的层合板，利用对称（反对称）边界条件得到频散曲线的对称模式（反对称模式）。对于纤维增强多层复合板试验材料，进行了有限元仿真计算和试验测量，验证了该方法的有效性。
- 各向异性复合板 /
- 兰姆波 /
- 频散曲线 /
- 有限元特征频率法
Abstract: A method based on the finite element intrinsic frequency method for solving the Lamb wave dispersion curve in an anisotropic composite plate is proposed. The plate structure can be simplified according to the Floquet periodic boundary conditions. For the symmetrically laminated plates with the plate thickness direction, the symmetric (antisymmetric) mode of the dispersion curve is obtained by using the symmetric (antisymmetric) boundary condition. The finite element simulation and experimental measurements were carried out for the fiber reinforced multilayered composite plate, and the validity of the method was verified.
- Anisotropic composite plate /
- Lamb wave /
- Dispersion curve /
- Finite element intrinsic frequency method

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