Stress Analysis of Corroded Oil Storage Tank Having Local Thin Areas By Using A Partial Three Dimensional Axis Symmetrical Analysis Model

2004 ◽  
Vol 2004.6 (0) ◽  
pp. 5-6
Author(s):  
Hai YUAN ◽  
Kazuma KAWANO ◽  
Kazuyoshi SEKINE ◽  
Hiroaki MARUYAMA
Author(s):  
Hai Yuan ◽  
Kazuma Kawano ◽  
Kazuyoshi Sekine ◽  
Hiroaki Maruyama

The shell plate of oil storage tank is an important evaluating component in the Fitness-For Service Assessment (FFS), because it is required to have sufficient strength against static and dynamic pressures in both operating and earthquake conditions. This paper presents an investigation on the tendency of stress occurred in the local thin areas (LTAs) of shell plate subjected to an internal pressure by using a partial three-dimensional shell model. In the analyses, a LTA is assumed as a rectangular area or a ring area with a rectangular cross section, and its lengths in the longitudinal and circumferential directions are taken as study parameters. The tendency of stress ratio (the stress in LTA of shell plate to that without LTA) has been investigated and the analytical results show that there is a tendency for stress ratio to be going up when the longitudinal length of LTA lengthens gradually and the thickness of shell plate is decreased. But it is opposite for increasing the circumferential length, when the stress ratio is going down. The relation between the stress ratio and the shape of LTA with different combination of sizes are clarified by the analytical results.


Author(s):  
Shuxin Zhang ◽  
Xiaolong Liu ◽  
Jinheng Luo ◽  
Bingbing Sun ◽  
Gang Wu ◽  
...  

2012 ◽  
Vol 232 ◽  
pp. 803-807 ◽  
Author(s):  
Yoshihiro Hirokawa ◽  
Haruki Nishi ◽  
Minoru Yamada ◽  
Shinsaku Zama ◽  
Ken Hatayama

Several cracks were found on some actual floating roofs of a crude oil tank in the oil refinery located in southern Japan. We assumed that one of reasons would be due to thermal stress caused by temperature changes during the day. In order to consider whether the thermal stress could the cause damages on the floating roof, strain and temperature were measured on the actual floating roof by using optical fiber gauges. Furthermore, thermal stress analysis was carried out as effective analysis.


2019 ◽  
Author(s):  
M. Masrukhi ◽  
Pekik Mahardhika ◽  
Ika Erawati ◽  
Bagas Probo Wasono

2021 ◽  
Author(s):  
Kamalesh Gupta ◽  
Arun Kumar Jana ◽  
Mousumi Chakraborty ◽  
Parimal A. Parikh

2011 ◽  
Vol 90-93 ◽  
pp. 387-392
Author(s):  
Ying Cui ◽  
Jun Hai Zhao ◽  
Shan Shan Sun

The composite foundation fully takes the carrying capacity of pile and soil into account, which decreases the settlement of oil storage tank foundation and differential settlement of oil storage tank bottom apparently. Analyzing the changes of stress and settlement under different conditions and optimizing the parameters of pile have important significance in engineering practice. In this paper, with an actual project of oil storage tank for background, basing on the Drucker-Prager yield criterion, the FEM model of composite foundation has been carried out by using ANSYS procedure. And with simulating the status of composite foundation under the working load, the project properties of composite foundation are investigated. Further more, analysis on the impacts of different pile parameters on stress and settlement of composite foundation have been carried out. In the end, the optimization scheme of composite foundation design has been proposed.


Sign in / Sign up

Export Citation Format

Share Document