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首页> 外文期刊>Journal of mechanics of materials and structures >DISPERSION OF GUIDED WAVES IN INITIALLY STRESSED LAYERED PLATES
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DISPERSION OF GUIDED WAVES IN INITIALLY STRESSED LAYERED PLATES

机译：初始应力分层板中导向波的分散

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摘要

Based on the theory of the mechanics of incremental deformations, guided wave propagation in multi-layered plates under initial stresses in the thickness and wave-propagation directions is investigated. The Legendre polynomial series method is used to solve the coupled wave equations and its convergence is discussed along with numerical examples. The effects of initial stresses on Lamb-like waves and SH waves are analyzed, and numerical results show that they are quite distinct. The frequency variation is not linear with the increase of the initial stresses in both directions. The effects of the initial stress in the thickness direction are very different from those in the longitudinal direction.
机译：基于增量变形的力学理论，研究了在厚度和波传播方向上的初始应力下多层板中的导波传播。勒让德多项式级数方法用于求解耦合波动方程，并结合数值示例讨论其收敛性。分析了初始应力对Lamb-like波和SH波的影响，数值结果表明它们是完全不同的。随着两个方向上初始应力的增加，频率变化不是线性的。初始应力在厚度方向上的影响与纵向方向上的影响有很大不同。

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