Analyzing fixed roof storage tanks using FE principles to investigate the stress relief degree caused by live loads against wind loads

2016 ◽  
Author(s):  
Nawfal Hsaine ◽  
Francis Franklin
Keyword(s):  
Stress Relief ◽  
Wind Loads ◽  
Storage Tanks ◽  
Live Loads

scholarly journals Wind Loads for Designing Cylindrical Storage Tanks Part 1 Characteristics of Wind Pressure and Force Distributions

2012 ◽  
Vol 37 (2) ◽  
pp. 43-53 ◽  
Author(s):  
Jumpei YASUNAGA ◽  
Choongmo KOO ◽  
Yasushi UEMATSU
Keyword(s):  
Wind Pressure ◽  
Wind Loads ◽  
Storage Tanks

Consideration of Wind Loads in Fitness for Service Assessment of Storage Tanks

2020 ◽  
Author(s):  
Gys van Zyl ◽  
Stewart Long
Keyword(s):  
Wind Pressure ◽  
Wind Loads ◽  
Wind Loading ◽  
Storage Tanks ◽  
Actual Distribution ◽  
Wind Actions ◽  
Level 3 ◽  
Tank Design ◽  
Cylindrical Tanks ◽  
Direct Guidance

Abstract Wind actions are important to consider when performing fitness for service assessment on storage tanks with damage. Tank design codes typically have rules where a design wind velocity is used to determine required dimensions and spacing of wind girders, and a uniform wind pressure is used to evaluate tank anchorage for uplift and overturning due to wind actions. These rules are of little use in a fitness for service assessment of localized damage, as the actual distribution of wind pressure on the wall and roof of a cylindrical tank is far from constant, and a better evaluation of the wind pressure distribution is desired when performing a level 3 fitness for service assessment. API 579/ASME FFS-1 provides no direct guidance relating to the application of wind loading but refers to the American Society of Civil Engineers Standard ASCE/SEI 7. Other international codes relating to wind loads, such as Eurocode EN-1991-1-4 and Australia/New Zealand Standard AS/NZS 1170.2 also contain guidance for the evaluation of wind actions on cylindrical tanks. This paper will present a review of these international codes by comparing their guidance for wind actions on cylindrical tanks, with specific emphasis on how this may affect a level 3 fitness for service assessment of a damaged storage tank.

Actions

2017 ◽  
pp. 51-123
Keyword(s):  
Significant Part ◽  
Wind Loads ◽  
Impact Loads ◽  
General Description ◽  
Design Codes ◽  
Lateral Loads ◽  
Live Loads ◽  
Construction Loads ◽  
Main Effects

This chapter presents a general description and discussion of the actions applied to temporary structures such as construction loads, wind loads, impact loads and unidentified hazard events. A classification of actions is presented. Actions are classified into permanent actions such as self-weight, lateral loads by soil or water; and variable actions such as live loads, earthquakes and wind loads. Comparisons are made between design provisions for loads as specified by European, USA and Australian design codes and standards. Methods to estimate the main effects of the actions on temporary structures are presented. The latest research into wind on temporary structures is a significant part of this chapter with its implications to the correct wind forces acting on temporary structures when turbulence and orography are taken into account.

scholarly journals Effects of Wind Girders on the Buckling and Vibration of Open-topped Oil Storage Tanks under Wind Loads

2016 ◽  
Vol 41 (2) ◽  
pp. 58-67 ◽  
Author(s):  
Jumpei YASUNAGA, ◽  
Takayuki YAMAGUCHI ◽  
Yasushi UEMATSU
Keyword(s):  
Wind Loads ◽  
Storage Tanks ◽  
Oil Storage

Design wind loads for open-topped storage tanks in various arrangements

2015 ◽  
Vol 138 ◽  
pp. 77-86 ◽  
Author(s):  
Yasushi Uematsu ◽  
Jumpei Yasunaga ◽  
Choongmo Koo
Keyword(s):  
Wind Loads ◽  
Storage Tanks

scholarly journals Distressing - Loading - Modelling of Vehicles

2012 ◽  
pp. 15-47
Keyword(s):  
Structural Type ◽  
Wind Loads ◽  
Seismic Loads ◽  
Thermal Loads ◽  
Centrifugal Forces ◽  
Blast Loads ◽  
Traffic Loads ◽  
Bridge Structures ◽  
Live Loads ◽  
Load Types

This chapter deals with all load types imposed to bridge structures. Typical permanent and live loads such as self-weight, traffic loads, snow and wind loads and thermal loads are presented with reference to international codes for structural loadings. Special loads such as seismic loads, accidental loads, blast loads, support settlement, centrifugal forces etc. are also given. The designer must take into account all loads specified by the codes as well as special load cases due to structural type of the bridge.

scholarly journals Wind Loads for Designing Open-topped Oil-storage Tanks in Various Arrangements

2014 ◽  
Vol 39 (3) ◽  
pp. 53-62
Author(s):  
Jumpei YASUNAGA ◽  
Choongmo KOO ◽  
Yasushi UEMATSU
Keyword(s):  
Wind Loads ◽  
Storage Tanks ◽  
Oil Storage

TEM investigations of surface residual stress relaxation in A12O3 and Al2O3-SiC nanocomposite

1994 ◽  
Vol 52 ◽  
pp. 628-629
Author(s):  
J. Fang ◽  
H. M. Chan ◽  
M. P. Harmer
Keyword(s):  
Residual Stress ◽  
Single Phase ◽  
Stress Relief ◽  
Stress Recovery ◽  
Surface Residual Stress ◽  
Microscopic Mechanism ◽  
Sic Particles ◽  
Annealing Procedure ◽  
The Difference ◽  
Nano Size

It was Niihara et al. who first discovered that the fracture strength of Al2O3 can be increased by incorporating as little as 5 vol.% of nano-size SiC particles (>1000 MPa), and that the strength would be improved further by a simple annealing procedure (>1500 MPa). This discovery has stimulated intense interest on Al2O3/SiC nanocomposites. Recent indentation studies by Fang et al. have shown that residual stress relief was more difficult in the nanocomposite than in pure Al2O3. In the present work, TEM was employed to investigate the microscopic mechanism(s) for the difference in the residual stress recovery in these two materials.Bulk samples of hot-pressed single phase Al2O3, and Al2O3 containing 5 vol.% 0.15 μm SiC particles were simultaneously polished with 15 μm diamond compound. Each sample was cut into two pieces, one of which was subsequently annealed at 1300° for 2 hours in flowing argon. Disks of 3 mm in diameter were cut from bulk samples.

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