Accession Number : AD0690474

Title :   BOUNDS TO FREQUENCIES OF A SIMPLY SUPPORTED ROTATING BEAM.

Descriptive Note : Technical memo.,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Rubinstein,Nathan ; Stadter,James T.

Report Date : OCT 1968

Pagination or Media Count : 41

Abstract : The upper and lower bounds to frequencies of bending vibration of a rotating uniform beam simply supported at one end and free at the other are presented. The upper bounds were obtained by use of the Rayleigh-Ritz procedure using two different sets of trial vectors. The lower bounds were obtained using two methods: (1) The method of sums of resolvable operators and (2) The method of intermediate problems with truncation. The virtues of these methods are discussed in the text. (Author)

Descriptors :   (*BEAMS(STRUCTURAL), BENDING), (*HELICOPTER ROTORS, BENDING), VIBRATION, FREQUENCY, ROTATION

Subject Categories : Helicopters
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE