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عنوان فارسی مقاله:
کمانش گنبد مدور با پشتیبانی لبه حلقه
عنوان انگلیسی مقاله:
Spherical Dome Buckling With Edge Ring Support
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Spherical dome roofs are widely used on large diameter tanks and silos, as they provide high strength using very limited amounts of material. The structural design of a spherical dome roof against buckling is an important feature of the design of such tanks. Because the dome can be very thin, it is particularly susceptible to elastic buckling failure under internal partial vacuum. The very simple rules that govern the design of these roofs in more traditional standards [1,2] are very old and predate modern computational assessments. More recent studies [3,4] have been incorporated into the 5th Edition of the European Design Recommendations on the Buckling of Shells [5], known for short as EDR5. These now permit buckling calculations to be reliably performed for a wide range of dome geometries. They have recently been accepted as an amendment [6,7] to the Eurocode on shell buckling EN 1993-1-6 [8] using the method of Reference Resistance Design [9]. However, it is unfortunate that these rules only address the buckling problem where very simple boundary or support conditions are used at the dome edge. The only three that can potentially be applied to the practical design of a tank are the support free to slide radially; radially restrained but pinned; and fixed (Fig. 1). These three principal support conditions lead to very different stress resultant magnitudes in the dome, and may consequently produce very different buckling resistances [2,3]. The above design rules make huge distinctions in the resistance assessment according to which support condition is chosen, so there is considerable scope for improvement if the support conditions can be treated with a little more realism.
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کلمات کلیدی:
Research paper (PDF): Buckling of a spherical dome in a centrifuge https://www.researchgate.net/.../239334795_Buckling_of_a_spherical_dome_in_a_centr... "In this study, the derived empirical equation is also the same but with different values of t eq . The classical theory overestimates the buckling load (Prevost et al. Classical Buckling Load of Spherical Domes under Uniform Pressure ... ascelibrary.org/doi/full/10.1061/(ASCE)0733-9399(1992)118:8(1513) by H Kunieda - 1992 - Cited by 6 - Related articles Aug 1, 1992 - "Classical Buckling Load of Spherical Domes under Uniform Pressure." J. Eng. Mech., 10.1061/(ASCE)0733-9399(1992)118:8(1513), ... [PDF]Buckling Load of Thin Spherical Shells Based on the Theorem ... - IJET www.ijetch.org/papers/581-Y039.pdf by PN Khakina - Related articles Abstract—Thin spherical shells usually fail due to buckling. An empirical ..... “Effect of the rise/span ratio of a spherical cap shell on the buckling load ,” World ... Buckling Experiments, Shells, Built-up Structures, Composites and ... https://books.google.com/books?isbn=0471974501 J. Singer, J. Arbocz, T. Weller - 2002 - Technology & Engineering Figure 19.108 Ghent University creep buckling tests of microconcrele spherical domes subjected to uniform radial pressure — typical failures in the spherical ... An Introduction to Shell Structures: The Art and Science of Vaulting https://books.google.com/books?isbn=147570223X Michele Melaragno - 2012 - Technology & Engineering Of these only the spherical and the barrel are considered here. Buckling in Spherical Domes The empirical formula to determine the load that would cause a ... [PDF]BUCKLING ANALYSIS OF CONCRETE SPHERICAL SHELLS hrcak.srce.hr/file/111993 by I Mekjavić - 2011 - Cited by 1 - Related articles 2. Buckling of domes. The classical analysis for the bifurcation buckling of spherical domes under axisymmetrical radial pressure was long ago found to be [1, 2].
