4 edition of **A projection transformation method for nearly singular surface boundary element integrals** found in the catalog.

- 188 Want to read
- 17 Currently reading

Published
**1992**
by Springer-Verlag in Berlin, New York
.

Written in English

- Boundary element methods.

**Edition Notes**

Includes bibliographical references (p. [451]-456).

Statement | K. Hayami. |

Series | Lecture notes in engineering ;, 73 |

Classifications | |
---|---|

LC Classifications | TA347.B69 H38 1992 |

The Physical Object | |

Pagination | x, 456 p. : |

Number of Pages | 456 |

ID Numbers | |

Open Library | OL1700605M |

ISBN 10 | 3540550003, 0387550003 |

LC Control Number | 92000959 |

This paper presents a regularization scheme for the nearly singular integrals used for 3D elastostatic boundary element analysis. For the regularization process, the local projection coordinates of the source point are first located via an iteration procedure. For planar elements, the boundary integrals. Quadrature methods for singular and nearly singular integrals in 3-D boundary element method, (Invited paper), in C.A. Brebbia ed., Boundary Elements X, Proc. 10th on Boundary Elements, Southampton, Computational Mechanics Publication with Springer-Verlag, Vol. 1, pp. ,

An improved exponential transformation for accurate evaluation of nearly singular boundary integrals in 3D BEM. Accurate evaluation of nearly singular integrals is an important issue for the successful implementation of the boundary element method (BEM), and the exponential transformation has been proved to be feasible in dealing with nearly weak and strong singular integrals for 2D and 3D. A Projection Transformation Method for Nearly Singular Surface In three dimensional boundary element analysis, computation of integrals is an important aspect since it governs the accuracy of the analysis and also because it usually takes the major part of the CPU : Guochang Xu.

SIAM Journal on Scientific Computing > Vol Issue 3 > / A simplified two-dimensional boundary element method with arbitrary uniform mean flow. strongly, hyper- and nearly-singular integrals in boundary integral equation methods for domains with sharp edges and corners. Journal of Computational Physics , Cited by: Accurate computation of Galerkin double surface integrals in the 3-D boundary element method Ross Adelman, Nail A. Gumerovy, and Ramani Duraiswami z Institute for Advanced Computer Studies, University of Maryland, College Park Abstract Many boundary element integral equation kernels are based on the Green’s functions of the Laplace and Cited by: 4.

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The integrals which determine the influence matrices, the internal field and its gradients contain (nearly) singular kernels of order lIr a (0:= 1,2,3,4.) where r is the distance between the source point and the integration point on the boundary element.

For planar elements, analytical integration may Brand: Springer-Verlag Berlin Heidelberg. Buy A Projection Transformation Method for Nearly Singular Surface Boundary Element Integrals (Lecture Notes in Engineering) on FREE SHIPPING on qualified orders A Projection Transformation Method for Nearly Singular Surface Boundary Element Integrals (Lecture Notes in Engineering): Ken Hayami: : BooksCited by: A Projection Transformation Method for Nearly Singular Surface In three dimensional boundary element analysis, computation of integrals is an important aspect since it governs the accuracy of the analysis and also because it usually takes the major part of the CPU : However, when the source is actually on the element (d=O), the kernel 1I~ becomes singular and the straight forward application of the Gauss-Legendre quadrature formula breaks down.

These integrals will be called singular integrals. Singular integrals occur when calculating the. Hayami and Brebbia 17 have proposed a new coordinate transformation method to calculate singular and nearly singular integrals for curved boundary elements : Ken Hayami.

Hayami, K.: A projection transformation method for nearly singular surface boundary element integrals. Lecture Notes in Engineering, vol. Springer-Verlag () Google Scholar; Hayami, K., Matsumoto, H.: A numerical quadrature for nearly singular boundary element integrals.

Eng. Anal. Bound. Elem. 13, () Google Scholar Cross RefAuthor: CanoAlfredo, MorenoCarlos. Nearly singular integrals Boundary element method Boundary face method The exponential transformation abstract This paper presents an improved exponential transformation for nearly singular boundary element inte-grals in elasticity problems.

The new transformation is less sensitive to the position of the projection. A projection transformation method for nearly singular surface boundary element integrals, Lecture Notes in Engineering, 73, ed. C.A.

Brebbia & $.A. Orszag, Springer-Verlag, Berlin, Hayami, K. Numerical quadrature for nearly singular integrals in the three dimensional boundary element method, PhD thesis, University of Tokyo, Cited by: the high order polynomial. Thus, the integrands in boundary integrals become rather complex to treat the nearly singular integrals.

In this study, a general strategy is proposed for calculation of the nearly singular integrals occurring on high-order curved surface elements in 3D BEM.

The Projection and Angular & Radial Transformation (PART) Method As seen in the previous section, nearly singular integrals arising in the three-dimensional boundary element method may be expressed as I = S f rα dS where S is generally a curved surface patch, r = ||x − x s|| 2 is the distance between a ﬁxed source point x s and a point x.

This work presents new variable transformations for accurate evaluation of the nearly singular integrals arising in the 3D boundary element method (BEM). The proposed method is an extension of the variable transformation method in Ref.

for 2D BEM to 3D by: A Projection Transformation Method for Nearly Singular Surface Boundary Element Integrals.

[Ken Hayami] -- This book proposes an accurate and efficient numerical inte- gration method for nearly singular integrals over general curved surfaces, arising in threedimensional boundary ele- ment analysis.

Variable Transformations for Nearly Singular Integrals in the Boundary Element Method∗ Dedicated to Professor Masao Iri and Professor Masatake Mori Ken HAYAMI National Institute of Informatics † Mathematics Subject Classiﬁcation(s): 65N38, 65D30, 65D32, 65R20, 41A In this work a three dimensional (3D) boundary element method was established with an efficient nonlinear coordinate transformation scheme, namely sinh transformation, to evaluate nearly singular.

The method is used to provide a unified approach to estimating the truncation errors which occur when Gauss–Legendre quadrature is used to evaluate the nearly singular integrals that arise as part. Projection transformation method for nearly singular surface boundary element integrals.

Berlin ; New York: Springer-Verlag, © (OCoLC) Material Type: Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: K Hayami.

Keywords: nearly singular integrals, boundary element method, adaptive integration, subdivision technique. 1 Introduction Boundary element method has become a popular approach for solving acoustical problems by virtue of its advantages, such as semi.

Improvement of quadrature for nearly singular integrals in 3D-BEM K. Hayami* & H. Matsumoto* TokyoJapan Co. Tokyo, Japan Abstract Modifications of the previously proposed PART(Projection and Angular & Radial Transformation) method for nearly singular integrals arising in the three dimensional boundary element method are proposed.

First, a ro. Abstract. AbstractA general numerical method is proposed to compute nearly singular integrals arising in the boundary integral equations (BIEs). The method provides a new implementation of the conventional distance transformation technique to make the result stable and accurate no matter where the projection point is by: Keywords: Boundary element method; Composite materials; Nearly-singular integrals 1.

Introduction Composites have been studied for decades. The aniso-tropic nature and the conﬁgurations in which they are fabricated allow for better design of structures with tailored material properties to.

Hayami, K. A Projection Transformation Method for Nearly Singular Surface Boundary Element Integrals. Springer. Hebeker, F. K. Efficient boundary element methods for three dimensional exterior viscous by: Therefore, a proper consideration and evaluation of singular integrals is one of the most frequently discussed topics in boundary element research.

This book gives the state-of-the-art of theoretical and numerical treatment of singular integrals in BEM': Vladimir Sladek.Numerical integration Boundary element method element to is not always the projection point of xs on the element and it can locate either inside the domain third-order polynomial transformations for nearly singular integrals [31,32].

When applied to the integral shown in (3),