Accession Number : AD0469187


Title :   DIGITAL SIMULATION OF RANDOM VIBRATIONS.


Descriptive Note : Scientific rept.,


Corporate Author : FLORIDA UNIV GAINESVILLE DEPT OF ENGINEERING SCIENCE AND MECHANICS


Personal Author(s) : Belz, Donald J


Report Date : Jun 1965


Pagination or Media Count : 1


Abstract : A physically realizable stationary, Gaussian, random load is simulated digitally and employed as the forcing function in the equation of motion of a damped, elastic beam whose resistance to deformation is due to bending and stretching. The power residue method for generating pseudo-random numbers is employed in the technique presented for constructing the random function, whose statistical properties correspond closely to those of pressure signals measured in the noise field of a turbulent, subsonic air jet. The nonlinear equation of motion is solved in finite-difference form with a forcing function representing a time-random concentrated load applied transversely at midspan. From numerical solutions, statistical measures of response at midspan and at the quarter points of the beam are computed. (Author)


Descriptors :   *STRUCTURES , VIBRATION , SIMULATION , DIGITAL COMPUTERS , BEAMS(STRUCTURAL) , ELASTIC PROPERTIES , DAMPING , STATISTICAL FUNCTIONS , EQUATIONS , MOTION , STATISTICAL DISTRIBUTIONS , NONLINEAR SYSTEMS , NUMERICAL METHODS AND PROCEDURES , PSEUDO RANDOM SYSTEMS , LOAD DISTRIBUTION , LOADS(FORCES)


Distribution Statement : APPROVED FOR PUBLIC RELEASE