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中文核心期刊

金属薄板中Lamb波波速与静应力关系的理论研究

Research of relationship between Lamb wave velocity and static stress of metal plate

  • 摘要: 本研究基于各向同性金属材料在静压力作用下产生各向异性的事实,从固体中超声波的非线性理论出发,得到了在一定应力下固体的等效的二阶弹性常数,再利用各向异性板中的Lamb波理论推得了在静应力作用下与应力平行和垂直方向的Lamb波的频散方程,讨论了金属薄板中Lamb波波速与静应力的关系。

     

    Abstract: On the assumption that isotropic metal solid becomes anisotropic property in the state of stress, based on the theory of the nonlinear acoustoelasticity, the equivalent second order elastic constants is calculated for metal plate with static stress. For the case of thin metal plate with stress, the two kinds of dispersion equation for Lamb weave parallel or vertical to direction of static stress are derived. Using the equations, the relationship between Lamb wave velocity and static stress in metal plate is discussed.

     

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