3D Analysis for Conical Tanks under Seismic Loads
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2019, Vol 16, Issue 1
Abstract
In this study, conical ground and elevated tanks` seismic response has been investigated. This study has been motivated with the deficiency of data in design codes concerning conical tanks seismic analysis. Seismic analysis by American Water Works Association for welded steel tanks for water storage (AWWA D-100) or Egyptian code for loads (ECP201-2012) is based on an approximate method by using the mechanical analog of cylinder tanks by substituting the conical tank with an equivalent cylinder tank. 3D Finite element models have been modeled using added mass approach in order to represent the fluid-structure interaction. A previously established mechanical analog for conical tanks under horizontal seismic force has been used in the finite element model. The 3D finite element model is verified with El Damatty and Sweedan (2006) work and with Maheri et al. (1988) experimental work. A wide range of conical tanks has been studied to investigate the seismic response of conical tanks through evaluating maximum base shear, maximum overturning moment and maximummoment at the bottom of wall using response spectrum method. Those obtained values using finite element model, AWWA-D100 and ECP201-2012 have been compared to each other. This study reveals that approximate methods underestimate the seismic response of conical tanks, hence some correction factors have been suggested to be used if AWWA-D100 or ECP201-2012 procedures to be used. It also has been concluded that for the same tank volume and the same liquid height to radius at vessel base ratio (hw/Rb), a vertical inclination angle of tank`s walls (Ɵv) of 15o gives the minimum moment at the bottom of wall
Authors and Affiliations
Ahmed A. Rashed, Gamal H. Mahmoud, Nasr E. Nasr, Amgad A. Talaat
Keywords
Related Articles
- EP ID EP438903
- DOI 10.9790/1684-1601012944.
- Views 79
- Downloads 0
Numerical simulation of compressible viscous flow
The purpose of this research is the study and improvement of numerical methods to solve viscous compressible flows. The equations represent these flows are solved in the conservative form with a comparison between conser...
External Flow Analysis over Hyundai Model Using CFD
Computational fluid dynamic software ANSYS Fluent 15.0 is used to predict the physical parameters on the external surface of a vehicle. The simulation of the wind tunnel experiments using the above CFD package would be c...
Water Absorption and Sorptivity Properties of Concrete Containing Granulated Blast Furnace Slag
This paper describes on analyzing the effects of use of granulated blast furnace slag in the water absorption and sorptivity properties of concrete. The purpose of this study was to use of concrete reinforced by the vari...
Mathematics in Welding Design
The purpose of this paper is to show the importance of the welding calculations before the start in any projuct or making a ptroduct that involve a welding jop.
Risk Assessment of Critical Equipment Failure Mode. A Case Study of Olkaria 2 Geothermal Power Plant In Kenya.
Recently in Kenya, there is massive investment in exploration of geothermal energy which is the key source of power to the national grid. However, despite considerable investment in geothermal power sources, in Kenya and...