Accession Number : ADA302678

Title :   Analysis of Interface Cracks in Adhesively Bonded Lap Shear Joints. Part 4.

Descriptive Note : Final rept.,

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF THEORETICAL AND APPLIED MECHANICS

Personal Author(s) : Wang, S. S. ; Yau, J. F.

PDF Url : ADA302678

Report Date : FEB 1981

Pagination or Media Count : 49

Abstract : The conservation laws of elasticity for nonhomogeneous materials developed under this grant are used to study the crack behavior in adhesively bonded lap shear joints. These laws and the fundamental relationships in fracture mechanics of interface cracks, the problem is reduced to a pair of linear algebraic equations, and stress intensity solutions can be determined directly by information extracted from the far field. The numerical results obtained show that: (1) in the lap-shear joint with a given adherend, the opening-mode stress intensity factor (K sub I) is always larger than that of the shearing-mode (K sub II); (2) K sub I is not sensitive to adherent thickness but K sub II increases rapidly with increasing thickness; and (3) K sub I and K sub II increase simultaneously as the interfacial crack length increases. (MM)

Descriptors :   *CRACKS, *ELASTIC PROPERTIES, *ADHESIVES, *ADHESIVE BONDING, THICKNESS, INTERFACES, FINITE ELEMENT ANALYSIS, FAR FIELD, FRACTURE(MECHANICS), SHEAR STRESSES, CONSERVATION, JOINTS.

Subject Categories : Adhesives, Seals and Binders
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE