[1] Lu Shengzhuo, Wang Wei,. Dynamic response of fixed-roof oil-storage tank structureunder blast loading [J]. Journal of Southeast University (English Edition), 2012, 28 (1): 58-63. [doi:10.3969/j.issn.1003-7985.2012.01.011]
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Dynamic response of fixed-roof oil-storage tank structureunder blast loading(
)
爆炸冲击作用下拱顶式储油罐结构的动力响应
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 28
- Issue:
- 2012 1
- Page:
- 58-63
- Research Field:
- Mathematics, Physics, Mechanics
- Publishing date:
- 2012-03-30
Info
- Title:
- Dynamic response of fixed-roof oil-storage tank structureunder blast loading
- 爆炸冲击作用下拱顶式储油罐结构的动力响应
- Author(s):
- Lu Shengzhuo; Wang Wei
- College of Civil Engineering, University of Harbin Institute of Technology, HarBin 150090, China
- Keywords:
- fixed-roof oil-storage tank; combustible gas explosion; numerical simulation and analysis; impact loading; dynamic strain
- PACS:
- O382
- DOI:
- 10.3969/j.issn.1003-7985.2012.01.011
- Abstract:
- In order to investigate the damage and deformation mechanism of large scale steel fixed-roof oil-storage tanks under the combustible gas explosion, a series of explosion experiments of scaled models are conducted. The 1∶25 scaled numerical models of oil-storage tanks with a capacity of 5 000 m3 are also set up by ANSYS/LS-DYNA software, and their damage processes under the blast impact are numerically simulated. Both the experimental results and the numerical simulations show that the blast loading curve displays a pressure jump instantaneously at the moment of contact with the experimental models, and the overpressure peaks at the stagnation area of the outer surface on the blast side. The yield range first appears at the stagnation area and then propagates to the neighboring parts, and the irregular plastic hinge circle obviously appears around the deformation area, which results in the concaved buckling of the tank inner surface. During the whole process, the inner liquid not only impacts on the structures, but also absorbs and consumes part of the blast energy.
- 为研究大型钢制拱顶式储油罐在可燃气体爆炸作用下的破坏和变形特征, 对多个储油罐缩比模型进行爆炸实验.并利用ANSYS/LS-DYNA软件, 建立了缩比为1∶25的5 000 m3储油罐数值模型, 对模型在爆炸冲击作用下的破坏过程进行数值模拟.实验与数值结果表明:爆炸冲击波对储油罐缩比模型具有瞬间突跃增压的冲击特性, 罐壁迎爆面驻点区域超压峰值最高;迎爆面中部驻点区首先屈服并带动相邻部分达到屈服状态, 同时在变形区周围明显形成不规则的塑性铰环, 导致罐壁产生内凹屈曲.在此过程中, 罐内液体既对罐壁产生一定的冲击作用, 也能吸收和耗散部分爆炸能量.
References:
[1] Bjerketvedt D, Bakke J R, van Wingerden K. Gas explosion handbook [J]. Journal of Hazardous Material, 1997, 52(1):50-72.
[2] Sari A, Whitney M, Sawruk W. Blast analysis and retrofit of structures in industrial facilities [C]//Proceedings of the 2009 Structures Congress—Don’t Mess with Structural Engineers: Expanding Our Role. Austin, TX, USA, 2009:2075-2076.
[3] Baker D D. Advanced analysis topics for blast resistant buildings in petrochemical facilities[C]//Proceedings of the 2008 Structures Congress—Structures Congress 2008: Crossing the Borders. Vancouver, BC, Canada, 2008.
[4] Liu Xinyu, Ma Linjian, Ma Shuna. Model experiment on force characteristic of soil-embedded steel oil-tank under nuclear explosion [J]. Journal of PLA University of Science and Technology: Natural Science Edition, 2009, 10(2):175-178.(in Chinese)
[5] Liu Xinyu, Qiu Xuguang, Zhang Chuan. Computation method of dynamic loads of underground steel cylindrical shell under nuclear explosion [J]. Journal of PLA University of Science and Technology: Natural Science Edition, 2006, 7(4):360-364.(in Chinese)
[6] Pan Xuhai, Xu Jin, Jiang Juncheng, et al. Simulation analysis of dynamic response of thin-wall cylindrical tank to shock wave. [J]. Journal of Chemical Industry and Engineering, 2008, 59(3):798-801.(in Chinese)
[7] Lu Shengzhuo, Wei Wang. Study of destruction mechanism of floating-roof oiltank under combustible gaseous explosion in a small scale experiment [J]. Applied Mechanics and Materials, 2012, 137: 65-71.
[8] Lu Shengzhuo, Wang Wei, Zhang Boyi, et al. Experimental research on destruction mechanism of large-scale floating-roof oil tank under blast loading. [J]. Explosion and Shock Waves, 2011, 31(2):158-164.(in Chinese)
Memo
- Memo:
-
Biographies: Lu Shengzhuo(1982—), male, graduate; Wang Wei(corresponding author), male, doctor, professor, wwang@hit.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.51078115).
Citation: Lu Shengzhuo, Wang Wei. Dynamic response of fixed-roof oil-storage tank structure under blast loading[J].Journal of Southeast University(English Edition), 2012, 28(1):58-63.[doi:10.3969/j.issn.1003-7985.2012.01.011]