On prediction of the creep rupture time for axisymmetrically loaded hollow cylinders and cylindrical shells
نویسندگان
چکیده
منابع مشابه
Optimization of Cylindrical Shells Under Combined Loading Against Brittle Creep Rupture
Optimal structural design of cylindrical shells under overall bending, torsion, tension and internal pressure in creep conditions is considered. The material is assumed to be governed by the Norton-Odqvist nonlinear steady creep law. Minimal weight of the shell is the design objective, radius and wall thickness are design variables, and the constraint refers to brittle creep rupture as describe...
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The high efficiency of circular monocoque cylindrical shells in carrying axial loads is impaired by their extreme sensitivity to imperfections and there is an extensive body of literature that addresses this behavior. Instead of following this classical path, focused on circular cross-sections, this paper presents a novel approach that adopts optimal symmetry-breaking wavy cross-sections (wavy ...
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The high efficiency of monocoque cylindrical shells in carrying axial loads is curtailed by their extreme sensitivity to imperfections. For practical applications, this issue has been alleviated by introducing closely stiffened shells which, however, require expensive manufacturing. Here we present an alternative approach that provides a fundamentally different solution. We design symmetry-brea...
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Experiments on imperfection insensitive axially loaded cylindrical shells
This paper presents an experimental study of imperfection insensitive composite wavy cylindrical shells subject to axial compression. A fabrication technique for making cylindrical shells with intricate shape of cross-sections has been developed. A photogrammetry technique to measure the geometric imperfections has also been developed. The behavior of the wavy shells under axial compression was...
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ژورنال
عنوان ژورنال: Bulletin of the National Technical University «KhPI» Series: Dynamics and Strength of Machines
سال: 2016
ISSN: 2078-9130
DOI: 10.20998/2078-9130.2016.26.79935