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  • boundary element method  (2)
  • Bounds  (1)
  • Springer  (3)
  • 1995-1999  (1)
  • 1990-1994  (2)
  • 1996  (1)
  • 1992  (2)
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  • Springer  (3)
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  • 1995-1999  (1)
  • 1990-1994  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    The determination of an equivalent elastic modulus for bodies with cracks by boundary element method (1996)
    Springer
    Acta mechanica solida Sinica 9 (1996), S. 210-216 
    Details
    ISSN: 0894-9166
    Schlagwort(e): boundary element method ; self-consistent method ; equivalent elastic modulus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract The equivalent elastic modulus of cracked bodies with orderly distributed cracks was computed with the boundary element method. A practical self-consistent scheme has been proposed in consideration of the mutual interaction effects of the cracks. The influence of friction coefficients and orientation of cracks has been investigated. Some computational examples have been given, and the results show that the proposed method is adequate and the scheme is efficient.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02208304
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    On Steiner minimal trees withL p distance (1992)
    Springer
    Algorithmica 7 (1992), S. 179-191 
    Details
    ISSN: 1432-0541
    Schlagwort(e): Steiner trees ; Spanning trees ; Steiner ratio ; L p distance ; Bounds
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Mathematik
    Notizen: Abstract LetL p be the plane with the distanced p (A 1 ,A 2 ) = (¦x 1 −x 2¦ p + ¦y1 −y 2¦p)/1p wherex i andy i are the cartesian coordinates of the pointA i . LetP be a finite set of points inL p . We consider Steiner minimal trees onP. It is proved that, for 1 〈p 〈 ∞, each Steiner point is of degree exactly three. Define the Steiner ratio ϱ p to be inf{L s (P)/L m (P)¦P⊂L p } whereL s (P) andL m (P) are lengths of the Steiner minimal tree and the minimal spanning tree onP, respectively. Hwang showed ϱ1 = 2/3. Chung and Graham proved ϱ2 〉 0.842. We prove in this paper that ϱ{∞} = 2/3 and √(√2/2)ϱ1ϱ2 ≤ ϱp ≤ √3/2 for anyp.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01758757
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Application of an improved boundary element method on the problem of elastic torsion (1992)
    Springer
    Applied mathematics and mechanics 13 (1992), S. 643-648 
    Details
    ISSN: 1573-2754
    Schlagwort(e): clastic torsion ; Poisson equation ; boundary element method ; improved boundary element method
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Mathematik , Physik
    Notizen: Abstract An improved boundary element method has been used in analyzing and calculating the problems of the torsion of a prismatic bar with elliptical cross-section. In this paper the calculated results correspond with the values of boundary element method. However, the quantity of data required by the improved boundary element method is much less than that required by boundary element method, and the calculating time will be greatly reduced. Therefore, the procedure of this paper is an economical and efficient numerical computational way for solving Poisson equation problem.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02456088
    Standort Signatur Erwartet Verfügbarkeit
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