Accession Number : AD0765361

Title :   Dynamic Analysis of Elastic Plates with Circular Holes,

Corporate Author : NOTRE DAME UNIV IND COLL OF ENGINEERING

Personal Author(s) : Hegarty,R. F. ; Ariman,T.

Report Date : AUG 1973

Pagination or Media Count : 51

Abstract : The problem of the free vibrations of a rectangular elastic plate, either clamped or simply supported, with a central circular hole has been investigated by a least-squares point-matching method. The results are given in the form of curves relating the natural frequency of the plate to the hole size for a variety of Poisson's ratios. The curves do not behave monotonically, and the hole size at which the frequency is a minimum is seen to be dependent not only on the boundary conditions but also on Poisson's ratio. A two-fold mechanism of strain relief and mass reduction is proposed to explain these results as well as the results of previouw studies on the vibrations of plates with discontinuities. (Author)

Descriptors :   (*METAL PLATES, *VIBRATION), (*HULLS(MARINE), LOADS(FORCES)), RESONANT FREQUENCY, RECTANGULAR BODIES, BENDING, STRESSES, FATIGUE(MECHANICS), LEAST SQUARES METHOD, BOUNDARY VALUE PROBLEMS

Subject Categories : Marine Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE