Natural Frequency on Programmable Calculator

by Michael J. O'Rourke, (A.M.ASCE), Asst Prof. of Engrg. Sci.; Univ. of Wisconsin–Parkside, Kenosha, WI,

Serial Information: Journal of the Structural Division, 1974, Vol. 100, Issue 10, Pg. 2169-2173

Document Type: Journal Paper


Programmable calculators are being used for many civil engineering applications. From a programming standpoint, a major difficulty is the limited number of program steps and data storage locations available with programmable calculators. This note presents a procedure for determining an approximation to the fundamental frequency of a shear flexible structure using a programmable calculator with as few as 14 data storage locations and 225 program steps. A number of structures was investigated to determine the accuracy of the approximate method. The approximation involved is shown to yield results within 2% of exact values.

Subject Headings: Natural frequency | Approximation methods | Computer programming

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