Numerical integration required during Fourier integral analysis is discussed. For the case of a long and prismatic elastic medium subject to three-dimensional loads applied at the surface (e.g. live load response of buried structures), the complexity of inverse integrals depends on the relative magn
Fourier analysis of numerical integration formulae
β Scribed by Paolo Luchini
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 726 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0010-4655
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β¦ Synopsis
A comparative analysis of the most well known numerical integration rules is conducted by the Fourier method, which allows their approximation properties to be estimated not only in the limit of step size tending to zero but also for nonzero step size. In this way new insight is gained on several phenomena, among which the failure of the Gregory integration rules to yield better results than Simpson's rule, in terms of the occurrence of poles and other complex singularities in the corresponding transfer functions.
π SIMILAR VOLUMES
The results of Β¨arious quadrature rules suitable to compute the SchwarzαChristoffel formula are briefly discussed, and a formal integration rule is introduced for an important particular case, leading to compound quadrature procedures that are faster and more accurate than traditional ones.
The uniquely solvable system of the Cauchy integral equation of the first kind and index 1 and an additional integral condition are treated. Such a system arises, for example, when solving the skew derivative problem for the Laplace equation outside an open arc in a plane. This problem models the el
The Fourier method is used to analyze the dispersive, dissipative, and isotropy errors of various spatial and time discretizations ap-ized to include the modeling of curved surfaces [8][9] and plied to the Maxwell equations on multi-dimensional grids. Both body oriented grids [10][11][12][13]. It is