6 results for “Cylindrical Shell”

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Research ArticleOpen accessPhrase in the titleReliability Assessment of Buckling Strength for Compressed Cylindrical Shells with Interacting Localized Geometric ImperfectionsJalal El Bahaoui, Abdellatif Khamlichi, Larbi El Bakkali, Ali LimamProblem statement: Elastic cylindrical shells are common structures in the fields of civil engineering and engineering mechanics. These thin-walled constructions may undergo buckling when subjected to axial compression. Buckling limits to large extent their strength performance. This phenomenon depends hugely on the initial distributed or localized geometric imperfections that are present on the shell structure. Localized geometric imperfections result in … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 4 Nov 2010 · 8,320 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleEffect of Two Interacting Localized Defects on the Critical Load for Thin Cylindrical Shells Under Axial CompressionAbdellatif Khamlichi, Jalal El Bahaoui, Larbi El Bakkali et al.Problem statement: Many modern structures are made from thin shells. Design of these elements depends to a large extent on their buckling behavior which is hugely affected by the initial geometric imperfections. Approach: For axially compressed isotropic circular cylindrical shells, axisymmetric localized geometric imperfections were found to reduce severely the buckling strength. Among various axisymmetric shapes of localized defects that … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,065 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleTHE THEORETICAL SIMULATION OF AXIAL VIBRATIONS IN FINITE CYLINDRICAL PIEZOELECTRIC SHELL MADE OF THE TRIGONAL (3M) CRYSTALH. Zeynali, B. Jazi, R. KarimiThe axial vibration in a thin layer of finite cylinder made of trigonal (3M) piezoelectric crystal are investigated. By using a closed form solution of the equations of motion and applying new boundary conditions the effects of the geometrical dimensions, axial hydrostatic pressure and electrostatic potential along the axis of the cylinder shell on oscillation frequency and amplitude of spatial … …Physics International, Vol. 4, Issue 1 · 15 Feb 2013 · 6,918 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsCross-Section Optimization of Sandwich-Type Cylindrical Wind Turbine TowersStylianos M. Vernardos, Charis J. GantesAs wind energy is aggressively expanding within the alternative sources' part of modern world's energy pie, the need of addressing various obstacles that limit further wind utilization becomes all the more urgent. From a structural engineering point of view, surmounting the tower-base diameter limitation, dictated by the current transportation capabilities, is one of the industry's primary issues. The concept presented … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 7 Aug 2015 · 7,993 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffects of Mixing Ratio and Size of Egg-Shell on Boiling and Compression Test of Mixed CharcoalBopit Bubphachot, Rujipas Seeladlao, Songchai WiriyaumpaiwongProblem statement: The use of waste material is one of the options to add value to the residue. Nowadays, solid fuel development is necessary in current situation due to high price fossil fuel and the reduction of resource. Wood charcoal is widely used in the country which has abundant of forest. Becoming charcoal, it needs to be burnt under optimum … …Energy Research Journal, Vol. 1, Issue 1 · 30 Jun 2010 · 8,644 accessesView PDF Cite

Research ArticleOpen accessIn the abstractMinimum and Complete Fluidization Velocity for Sand-Palm Shell Mixtures, Part I: Fluidization Behavior and Characteristic VelocitiesV. S. Chok, A. Gorin, H. B. ChuaProblem statement: Palm shell on its original state cannot be fluidized solely. However, mixing palm shell with a second fluidizable material can facilitate proper fluidization. Approach: The minimum and complete fluidization velocity (Umf and Ucf) for sand/palm shell binary mixtures had been studied in a partitioned reactor known as Compartmented Fluidized Bed Gasifier (CFBG). The pilot scale reactor ID is … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 7,214 accessesView PDF Cite