Radial gaps were found in multilayered cylindrical vessels which experience inner explosion accidents in chemical plants in the past few years worldwide. It is necessary to investigate the dynamic response of multilayered structures with radial gaps to ensure the vessel safety. This paper presented a numerical modeling of the dynamic response of a multilayered structure with radial gaps of cylindrical pressure vessel under plane strain conditions by using the ANSYS/ls-dyna package. The effects of the dynamic loading profile and the radial gap height are considered in the investigation. The stress spatial distribution, the stress and the plastic deformation variation curves with time are emphatically analyzed. The results show that the stress variation of the entire loading process can be divided into four stages: the oscillation stage, the yield stage, the fast increase stage, and the redistribution stage. The layer stress distributes discontinuously at the gaps between layers and distributes unevenly in any single layer. The inner layer stress is not always larger than the outer layers' during the whole loading process. The effect of loading profile on the dynamic response is not as obvious as the gap height. As the gap height increases, the stress oscillation stage is suppressed and becomes shorter. While the loading recovers to the operation pressure, the stress and the plastic deformation of inner layers increases and vice versa for the outer layers.
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August 2019
Research-Article
Dynamic Stress Analysis of Multilayered Structure With Radial Gaps of Cylindrical Pressure Vessel Under Plane Strain Conditions
Huadong Liu,
Huadong Liu
School of Chemical Engineering and Energy,
Zhengzhou University,
Zhengzhou 450001, China
Zhengzhou University,
Zhengzhou 450001, China
Search for other works by this author on:
Weiqiang Wang
Weiqiang Wang
School of Mechanical Engineering,
Shandong University,
Jinan 250061, China;
Shandong University,
Jinan 250061, China;
Engineering and Technology Research
Center for Special Equipment
Safety of Shandong Province,
Jinan 250061, China;
Center for Special Equipment
Safety of Shandong Province,
Jinan 250061, China;
Research Center of Safety Guarantee
and Assessment to Special Equipment,
Shandong University,
Jinan 250061, China
e-mail: wqwang@zzu.edu.cn
and Assessment to Special Equipment,
Shandong University,
Jinan 250061, China
e-mail: wqwang@zzu.edu.cn
1Corresponding author.
Search for other works by this author on:
Huadong Liu
School of Chemical Engineering and Energy,
Zhengzhou University,
Zhengzhou 450001, China
Zhengzhou University,
Zhengzhou 450001, China
Weiqiang Wang
School of Mechanical Engineering,
Shandong University,
Jinan 250061, China;
Shandong University,
Jinan 250061, China;
Engineering and Technology Research
Center for Special Equipment
Safety of Shandong Province,
Jinan 250061, China;
Center for Special Equipment
Safety of Shandong Province,
Jinan 250061, China;
Research Center of Safety Guarantee
and Assessment to Special Equipment,
Shandong University,
Jinan 250061, China
e-mail: wqwang@zzu.edu.cn
and Assessment to Special Equipment,
Shandong University,
Jinan 250061, China
e-mail: wqwang@zzu.edu.cn
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received November 14, 2017; final manuscript received March 15, 2019; published online May 13, 2019. Assoc. Editor: Yun-Jae Kim.
J. Pressure Vessel Technol. Aug 2019, 141(4): 041202 (8 pages)
Published Online: May 13, 2019
Article history
Received:
November 14, 2017
Revised:
March 15, 2019
Citation
Liu, H., and Wang, W. (May 13, 2019). "Dynamic Stress Analysis of Multilayered Structure With Radial Gaps of Cylindrical Pressure Vessel Under Plane Strain Conditions." ASME. J. Pressure Vessel Technol. August 2019; 141(4): 041202. https://doi.org/10.1115/1.4043296
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