Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Rock mechanics and rock engineering 5 (1973), S. 65-76 
    ISSN: 1434-453X
    Keywords: Finite elements ; ground freezing ; latent heat ; Finite Elemente ; Bodengefrierung ; latente Wärme ; Elément fini ; congélation du sol ; chaleur latente
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Description / Table of Contents: Zusammenfassung Die Anwendung endlicher Elemente auf Wärmeleitprobleme im Zusammenhang mit latenter Wärme Zur Lösung von Wärmeleitproblemen im Zusammenhang mit latenter Wärme ist eine Finite-Element-Methode entwickelt worden. Diese Methode ist allen wohlbekannten Lösungsversuchen insofern überlegen, als sie die Behandlung einer größeren Vielfalt von Werkstoffeigenschaften sowie Grenzbedingungen gestattet, wie sie in komplexen technischen Aufgaben, z. B. der Bodengefrierung, auftreten. In dieser Abhandlung wird die Methode auf einfache dreieckige begrenzte Elemente angewendet, obwohl sie auch auf andere Elementtypen, einschließlich dreidimensionaler Elemente, ausgedehnt werden könnte. Mehrere Problemstellungen werden anhand von Beispielen erörtert und näher erläutert; ferner werden Vergleiche mit anderen Lösungsversuchen angestellt, bei denen sich diese ebenfalls verwenden lassen.
    Abstract: Résumé L'application des éléments finis aux problèmes de conduction de chaleur dans lesquels entre en jeu la chaleur latente Une méthode par éléments finis est mise au point pour la solution des problèmes de conduction de chaleur dans lesquels entre en jeu la chaleur latente. Elle est supérieure à d'autres méthodes bien connues pour aborder ces problèmes du fait qu'elle permet de tenir compte d'un plus grand nombre de propriétés du matériau et de conditions aux limites, telles qu'elles se présentent dans les opérations complexes de génie civil comme la congélation du sol. La méthode est appliquée dans cet exposé à de simples éléments triangulaires finis, mais elle peut s'appliquer également à d'autres types d'éléments y compris ceux à trois dimensions. Plusieurs problèmes y sont discutés et illustrés en qualité d'exemples, on y fait des comparaisons avec d'autres méthodes quand celles-ci peuvent être mises en oeuvre.
    Notes: Summary The Application of Finite Elements to Heat Conduction Problems Involving Latent Heat A finite element method is developed for the solution of heat conduction problems which involve latent heat. The method is superior to other wellknown approaches to these problems in that it allows a wider range of material properties and boundary conditions to be dealt with, such as are encountered in complex engineering operations like ground freezing. The method is applied to simple triangular finite elements in this paper, although it could be extended to other types of element including three-dimensional ones. Several example problems are discussed and illustrated, and comparisons are made with other approaches where these can also be used.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 40 (1997), S. 137-164 
    ISSN: 0029-5981
    Keywords: recovery ; patch ; adaptivity ; error estimates ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A new recovery technique is developed in this paper. It is shown that, for many elements, the behaviour of the method is very similar to that of SPR. Because it does not need to identify super-convergent points, it is applicable for any form of element in which these points are not defined. The formulation is very simple and is based on equilibrating the recovered stresses, in the patch, in the same way that the standard FEM does. This procedure leads to a weak form of equilibrium equations of new stresses on the patch and consequently to answers satisfying the discrete equilibrium conditions. The formulation is consistent with non-linear formulations which iteratively equilibrate the problem. Therefore, this method can be used to project the Gauss points values to nodal points, with minimum disturbance of the global equilibrium. © 1997 by John Wiley & Sons, Ltd.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 40 (1997), S. 3247-3277 
    ISSN: 0029-5981
    Keywords: recovery ; patch ; adaptivity ; error estimation ; robustness test ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: We present in this paper a modified form of the REP gradient recovery process recently published. This new form is not only cheaper but has a much improved performance - which equals and occasionally exceeds the performance of the SPR (Superconvergent Patch Recovery) method.The comparisons are based on the robustness test originally proposed by Babuška et al. This test is described briefly in a manner suitable for those who find some aspects of modern mathematics difficult to follow.The result and comparison of the tests for various repeatable patches with regular and irregular element distribution are made with SPR and the ‘old’ form of REP and are based on the general error estimator introduced by Zienkiewicz and Zhu in 1987. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...