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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Multiple diffraction of a line source field by a three-part thin transmissive slab
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Multiple diffraction of a line source field by a three-part thin transmissive slab

机译:三部分薄透射平板对线源场的多重衍射

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摘要

A uniform asymptotic high-frequency solution is presented for the problem of diffraction of a line source field by a three-part thin transmissive slab. After simulating the slab by a material plane with a set of approximate boundary conditions used recently by RAWLINS et al., the three-part boundary-value problem is transformed into a modified matrix Wiener-Hopf equation. By performing the factorization of the kernel matrix through the DANIELE-KHRAPKOV method, the modified matrix Wiener-Hopf equation is first reduced to a pair of coupled Fredholm integral equations of the second kind and then solved approximately by iterations. An interesting feature of the present solution is that the classical Wiener-Hopf arguments yield unknown constants which may be determined by means of the edge conditions. [References: 15]
机译:针对三部分薄透射平板对线源场的衍射问题,给出了一个统一的渐近高频解。在由具有RAWLINS等人最近使用的一组近似边界条件的材料平面模拟平板之后,将三部分边界值问题转换为修正的矩阵Wiener-Hopf方程。通过使用DANIELE-KHRAPKOV方法对内核矩阵进行因式分解,将修改后的矩阵Wiener-Hopf方程首先简化为一对第二类耦合的Fredholm积分方程,然后通过迭代近似求解。本解决方案的一个有趣的特征是,经典的Wiener-Hopf自变量产生未知的常数,该常数可以通过边缘条件确定。 [参考:15]

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