Accession Number : AD0708668

Title :   APPLICATION OF THE HIGH PRECISION TRIANGULAR PLATE-BENDING ELEMENT TO PROBLEMS WITH CURVED BOUNDARIES.

Descriptive Note : Aeronautical rept.,

Corporate Author : NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Chernuka,M. W. ; Cowper,G. R. ; Lindberg,G. M. ; Olson,M. D.

Report Date : OCT 1969

Pagination or Media Count : 57

Abstract : The application of the high precision triangular plate-bending element to problems with curved boundaries is considered. Appropriate edge conditions for nodal points on these boundaries are derived. The error inherent in representing a curved boundary by a series of straight segments is found to be the limiting factor on accuracy, while the effect of approximations in the boundary conditions is minor. To overcome the first type of error, the high precision element is modified to include one curved edge. Substantial improvements in accuracy are obtained, as demonstrated in example calculations for circular and elliptical plates. (Author)

Descriptors :   (*METAL PLATES, BENDING), LOADS(FORCES), CURVED PROFILES, DEFLECTION, BOUNDARY VALUE PROBLEMS, MOMENTS, NUMERICAL ANALYSIS, STATISTICAL DATA, CANADA

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE