"The purpose of this study was to determine whether proportional damping could be used to satisfactorily simulate the more practical nonproportional damping condition in multistory shear buildings. To accomplish this one computer program was written to analyze proportionally damped systems and another to analyze nonproportionally damped systems, each giving as output the frequencies, mode shapes, displacements, shears and moments and the maximum shears and moments. Shear buildings of two, three and four stories were studied in which the damping coefficients were varied from one to ten percent of critical damping. Although the programs could handle various other types, only linearly decreasing forcing functions were used. For the proportional system, the damping matrix was taken proportional to the stiffness matrix such that a good approximation to the nonproportional damping matrix was obtained. The resulting shears at one particular time and the maximum shears were then compared. For the structures investigated it was found that the proportionally damped systems, in comparison to the nonproportionally damped systems, yielded conservative values for the shears examined whereas the maximum shears were almost identical to those in the nonproportional system"--Abstract, page ii.
Best, John, 1925-2015
Gillett, Billy E.
Cheng, Franklin Y.
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
University of Missouri at Rolla
viii, 112 pages
© 1968 Edwin Bailey, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Structural analysis (Engineering)
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Bailey, Edwin C., "A comparison of proportional and nonproportional damping in multistory shear buildings" (1968). Masters Theses. 5206.