Seismic response analysis of cylindrical tanks with initial irregularities on side walls

Journal Article · Wed May 01 04:00:00 EDT 1985 · J. Pressure Vessel Technol.; (United States)

DOI:https://doi.org/10.1115/1.3264421· OSTI ID:6309814

Zui, H; Shinke, T

The objective of this paper is to report the findings of the study on the effects of initial irregularities on the seismic response of cylindrical tanks. The initial irregularities induce circumferential hydrodynamic pressure components of highorder modes, which are neglected in current design assumptions. Seismic response formulas for cylindrical tanks with arbitrary initial irregularities have been derived from Lagrange's kinematic equation taking into account natural frequencies, vibrational modes and the hydrodynamic pressure. The hydrodynamic pressure in an irregular tank is evaluated by using velocity potential function. Natural frequency analysis is done by means of the transfer matrix method taking into consideration the initial hoop stress. The effect of aspect ratio H/D (H: liquid height and D: tank diameter) and the shape of initial irregularities are further examined by numerical calculations.

• Research Organization: Kobe Steel, Ltd., Kobe-shi Hyogo-ken,
• OSTI ID: 6309814
• Journal Information: J. Pressure Vessel Technol.; (United States), Journal Name: J. Pressure Vessel Technol.; (United States) Vol. 107:2; ISSN JPVTA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
CALCULATION METHODS
CONTAINERS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID MECHANICS
FREQUENCY ANALYSIS
HYDRAULICS
LAGRANGE EQUATIONS
MECHANICS
PARTIAL DIFFERENTIAL EQUATIONS
PRESSURE EFFECTS
PRESSURE VESSELS
SEISMIC EFFECTS
STRESS ANALYSIS
STRESSES