The governing equations of motion of the walking phenomena of the unanchored flat-bottom cylindrical shell tanks are examined. This paper considers that the walking phenomena is followed by the rocking motion of the tanks, since the rocking motion induces the reduction of self-weight and consequently reduces friction force between the tank and the foundation. The equations of motion are derived through variational approach. The physical quantities related to the walking phenomena are the mass of tank itself, tank content, the effective mass of liquid for bulging motion, for rocking motion and for rocking-bulging interaction motion, and friction force including self-weight reduction effects. The roles of every physical quantity related to the walking motion are clearly identified. The time history of the walking motion of the model tank induced by the initial enforced uplift angle and then gently released is well computed by the proposed procedure.
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ASME 2005 Pressure Vessels and Piping Conference
July 17–21, 2005
Denver, Colorado, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4193-6
PROCEEDINGS PAPER
Governing Equations of Motion of Walking Behavior of Unanchored Flat-Bottom Cylindrical Shell Tanks During Free Rocking Motion
Tomoyo Taniguchi,
Tomoyo Taniguchi
Tottori University, Tottori, Japan
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Koji Imai
Koji Imai
Tottori University, Tottori, Japan
Search for other works by this author on:
Tomoyo Taniguchi
Tottori University, Tottori, Japan
Koji Imai
Tottori University, Tottori, Japan
Paper No:
PVP2005-71288, pp. 221-228; 8 pages
Published Online:
July 29, 2008
Citation
Taniguchi, T, & Imai, K. "Governing Equations of Motion of Walking Behavior of Unanchored Flat-Bottom Cylindrical Shell Tanks During Free Rocking Motion." Proceedings of the ASME 2005 Pressure Vessels and Piping Conference. Volume 8: Seismic Engineering. Denver, Colorado, USA. July 17–21, 2005. pp. 221-228. ASME. https://doi.org/10.1115/PVP2005-71288
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