Date of Award

January 2019

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Civil Engineering

First Advisor

Sukhvarsh Jerath

Abstract

This thesis studied twelve liquid filled cylindrical storage tanks to determine the static buckling loads, as well as the dynamic buckling loads when subjected to earthquake loading. The geometries of the cylindrical tanks were investigated with height-to-diameter ratios of 0.5, 0.75, 1.0, 1.25, 1.5, and 2.0 and with diameter-to-thickness ratios of 520.83 and 1,041.67. Each cylindrical tank modeled had a constant thickness of 0.36 inches. ANSYS Workbench was used to create a finite element analysis of each cylindrical tank. A transient dynamic bucking analysis was performed on each model in order to determine the dynamic buckling load of the cylindrical tanks, filled to 90% height with water and subjected to horizontal earthquake excitations. Analysis of the results show when either height-to-diameter ratios or diameter-to thickness ratios increase, the dynamic buckling loads of the cylindrical tanks decrease.

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