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  • 1975-1979  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 47 (1978), S. 27-33 
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Es wird eine Analyse von elasto-visko-plastischen Problemen mit Kugel- oder Zylinder-Symmetrie durchgeführt. In ein unendlich ausgedehntes Medium, das sich ursprünglich unter hydrostatischem Druck befand, wird ein Hohlraum gebohrt und an seiner Oberfläche verstärkt. Dabei wirken die Radialspannungen als Belastung auf die Verstärkung, während die Tangentialspannungen aufgrund von Relaxationserscheinungen verringert werden. Unter vereinfachenden Annahmen wird eine geschlossene Lösung hergeleitet. Zu diesen Annahmen gehören: Starrheit der Verstärkung, unendlich schnelles Einbringen und Verstärken der Bohrung, kugel- oder zylinderförmiger Hohlraum, ideal isotropes, inkompressibles Medium, dessen Verhalten durch ein vereinfachtes vier-Elemente-Modell dargestellt werden kann.
    Notes: Summary A theoretical analysis is presented for elasto-visco-plastic problems with spherical or cylindrica symmetry. A cavity is bored in an infinite medium which is originally under a hydrostatic pressure, and strengthened by installing a wall around it. Radial stress develops to act as a load on the wall, as the circumferential stress decreases in magnitude due to relaxation phenomenon. A closed-form solution is derived on the basis of simplifying assumptions, among which arc infinite rigidity of the wall, no lapse of time in the boring and installation, cavity shape of a sphere or circular cylinder in addition to the idealized behavior of isotropy, incompressibility, and four-element model representation of the surrounding medium.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1978-01-01
    Print ISSN: 0020-1154
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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