Accession Number : AD0755168

Title :   Maximization and Minimization of Dynamic Load Factors.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : O'Hara,George J.

Report Date : 22 DEC 1972

Pagination or Media Count : 18

Abstract : 46(*OSCILLATORS, LOADS(FORCES)), DAMPING, EQUATIONS OF MOTION, DIFFERENTIAL EQUATIONS, SHOCK(MECHANICS)DYNAMIC LOADSThe report presents in a heuristic manner a method of determining the maximum and minimum possible values of dynamic load factors for damped and undamped simple oscillators responding to applied forces defined by an amplitude tolerance curve. In the case of forcing functions of long duration, limit cycles are derived to show the rates at which resonance buildup occurs. A few sample problems are worked out by the method of exact transformations, and the results are presented. It is demonstrated that for light damping a significant variation can occur in dynamic load factors for band-limited pulse shapes. (Author)

Descriptors :   (*OSCILLATORS, LOADS(FORCES)), DAMPING, EQUATIONS OF MOTION, DIFFERENTIAL EQUATIONS, SHOCK(MECHANICS)

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE