Accession Number : ADA305131

Title :   A Critical Examination of Stresses in an Elastic Single Lap Joint.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Cooper, Paul A. ; Sawyer, James W.

PDF Url : ADA305131

Report Date : SEP 1979

Pagination or Media Count : 60

Abstract : The results of an approximate nonlinear finite-element analysis of a single lap joint are presented and compared with the results of a linear finite-element analysis, and the geometric nonlinear effects caused by the load-path eccentricity on the adhesive stress distributions are determined. The results from finite-element, Goland-Reissner, and photoelastic analyses show that for a single lap joint the effect of the geometric nonlinear behavior of the joint has a sizable effect on the stresses in the adhesive. The Goland-Reissner analysis is sufficiently accurate in the prediction of stresses along the midsurface of the adhesive bond to be used for qualitative evaluation of the influence of geometric or material parametric variations. Detailed stress distributions in both the adherend and adhesive obtained from the finite-element analysis are presented to provide a basis for comparison with other solution techniques. (MM)

Descriptors :   *BONDED JOINTS, STRESS ANALYSIS, FINITE ELEMENT ANALYSIS, STIFFNESS, ELASTIC PROPERTIES, APPROXIMATION(MATHEMATICS), SHEAR STRESSES, AEROSPACE CRAFT, ADHESIVES, PHOTOELASTICITY, POISSON RATIO, JOINTS, ADHESIVE BONDING, SHEAR STRENGTH, PEEL STRENGTH.

Subject Categories : Adhesives, Seals and Binders
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE