Accession Number : AD0667600

Title :   ON THE DIFFUSION OF LOAD FROM A TRANSVERSE TENSION-BAR INTO A SEMI-INFINITE ELASTIC SHEET.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA INST OF TECH PASADENA DIV OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Muki,R. ; Sternberg,Eli

Report Date : FEB 1968

Pagination or Media Count : 42

Abstract : The paper deals with the load-diffusion from a tension-bar of finite length and uniform cross-section into a semi-infinite sheet, the axis of the bar being perpendicular to the edge of the sheet. The bar is regarded as a one-dimensional elastic continuum, whereas the elastic sheet is treated within the two-dimensional theory of generalized plane stress. Three alternative models for the stringer-attachment are considered: (a) line-contact; (b) area-contact based on matching the axial stringer-strain and the corresponding average sheet-strain across the width of the strip of adhesion; (c) area-contact based on matching the stringer-strain and the corresponding sheet-strain along the centerline of the strip of adhesion. It is shown that the line-contact model, in contrast to both area-contact models, does not admit the transmission of portions of the applied load through forces concentrated at the ends of the adhering bar-segment. Further, asymptotic estimates are deduced for the end-slopes of the load-diffusion curves appropriate to the three models under consideration. The integro-differential equation for the stringer-force in Case (b) and Case (c) is reduced to a standard Fredholm integral equation, which is solved numerically. The results thus obtained are compared with available experimental findings. (Author)

Descriptors :   (*ELASTIC PROPERTIES, LOADS(FORCES)), AERODYNAMIC LOADING, STRESSES, STRAIN(MECHANICS), INTEGRAL EQUATIONS, NUMERICAL ANALYSIS

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE