Single Lap Joints with Rounded Adherend Corners: Stress and Strain Analysis

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Zhao, X (Author) Other; Adams, RD (Author) Other; da Silva, LFM (Author) FEUP

Journal

Title: Journal of Adhesion Science and Technology

Vol. 25

Pages: 819-836

ISSN: 0169-4243

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 40 Citations

Scopus - 59 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-002-YWF

DOI: 10.1163/016942410x520871

Abstract (EN): One of the major difficulties in designing adhesive lap joints is the stress singularity present at the adherend corners at the ends of the overlap. One way to overcome this problem is to assume that the corners have a certain degree of rounding. The objective of the present study was to better understand the effect of the change in the geometry of the adherend corners on the stress distribution and, therefore, on the joint strength. Various degrees of rounding were studied and two different types of adhesives were used, one very brittle and another which could sustain a large plastic deformation. The study gives a detailed stress and strain distribution around the rounded adherends using the finite element method. The major finding is that the stresses or strains in the adhesive layer of a joint with rounded adherend corners are finite. In real joints, adherends generally have small rounded corners. Consequently, the model with small radius corners may be used to represent real adherends. (C) Koninklijke Brill NV, Leiden, 2011

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18