Method Study for Finite Element Modeling of Large Oil Storage Tanks

Abstract:

This article, basing on the field test stress of an oil-storage tank in the site, investigated finite element modeling method for large oil storage tanks. To study the effects of contact conditions among the tank wall, bottom plate and the foundation, the soil of the foundation, and holing on the tank stress, six different finite element models were built by ANSYS finite element analysis software. The stresses in the tank were calculated under the gravity load and the water pressure. Results of the six models have been compared with the field test values. It was obtained for the stress distribution in the tank wall, bottom plate, and big horn weld and around the manhole from which the influence scope and extent to the tank was investigated. It shows that the calculated stresses have a good agreement with measurement. The plane model has enough precision for the tank stress analysis. The contact conditions and soil affect on the stress in the scope with 0.2H and 0.24H (the height of the tank), and holing affects the adjacent area with 2D (the diameter of the manhole).

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 471-476
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.471
• Online since: May 2012
• Authors: Qi Ge, Feng Xiong, Xiao Yang Peng
• Keywords: Finite Element Analysis (FEA), Finite Element Modeling (FEM), Large Oil Storage Tanks, Measured Values in Site, Stress Distribution

References

[1] Li Wei.ANSYS Civil Engineering Application Examples.Bei Jing: China WaterPower Press,(2007)

[2] Gong Shuguang, Xie Guilan,Huang Yunqing. ANSYS Parameter Language and Command Notebook.Bei Jing: China Machine Press,(2009)

[3] Liu Tao, Shen Shiyin. Finite element analysis for large-scale oil tank.Machinery Design & Msnufacture, 2010, 3:41-43

[4] Zhao Fujun, Shun Jiangang. Static force finite element analysis for large floating roof oil storage tank.Oil and Gas Field Project,2008, 8:15-16.

[5] Zhao Jicheng, Duan Chenghong. FEA of Large Vertical Oil Tank based on Contact Simulation of the Interaction between Bottom Plate and Foundation.Petro-Chemical Equipment,2008,37(6): 49-52

[6] Chen Zhiping,Ge Song. New modeling method for finite element analysis of large oil srorage tanks. Journal of Zhejiang University (Engineering Science), 2006.40(6): 977-981.

[7] Li Changsheng ,Xiang Zhongquan ,Ding Jingyun .Aseimatic Design of Oil Storage Tanks at Sort-soil Sites.Journal of Tianjin Unibersity, 2001.34(5):577-581

[8] Li Changsheng ,Song Jie,Xiang Zhongquan. Static Inclined Test and Theory Analysis of Oil Storage Tank Model.Journal of Tianjin Unibersity,37(10) : 891-895.