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首页> 外文期刊>International Journal for Numerical Methods in Engineering >Numerical modeling of wave propagation in anisotropic viscoelastic laminated materials in transient regime: Application to modeling ultrasonic testing of composite structures
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Numerical modeling of wave propagation in anisotropic viscoelastic laminated materials in transient regime: Application to modeling ultrasonic testing of composite structures

机译:瞬时调节中各向异性粘弹性层压材料波传播的数值模拟:应用于复合结构超声波测试的应用

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摘要

Composite laminate structures remain an important family of materials used in cutting-edge industrial areas. Building efficient numerical modeling tools for high-frequency wave propagation in order to represent ultrasonic testing experiments of these materials remains a major challenge. In particular, incorporating attenuation phenomena within anisotropic plies, and thin intermediate isotropic layers between the plies often represent significant obstacles for standard numerical approaches. In our work, we address both issues by proposing a systematic study of the fully discrete propagators associated to the Kelvin-Voigt, Maxwell, and Zener models, and by incorporating effective transmission conditions between plies using the mortar element method. We illustrate the soundness of our approach by proposing intermediate one-dimensional and two-dimensional numerical evidence, and we apply it to a more realistic configuration of a curved laminate composite structure in a three-dimensional setting.
机译:复合层压板结构仍然是尖端工业区中使用的重要材料。为高频波传播构建高效的数值建模工具,以表示这些材料的超声波检测实验仍然是一个重大挑战。特别地,将衰减现象掺入各向异性层内,并且薄层之间的薄的中间各向同性层通常代表标准数值方法的显着障碍。在我们的工作中,我们通过提出与Kelvin-Voigt,Maxwell和齐纳模型相关的完全离散传播器的系统研究来解决这两个问题,以及使用砂浆元件方法在层之间结合有效的传动条件。我们通过提出中间一维和二维数值证据来说明我们的方法的声音,并且我们将其应用于三维设置中的弯曲层压复合结构的更现实的构造。

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