Matériaux & Techniques
Volume 84, 1996
|Page(s)||47 - 56|
|Published online||21 June 2017|
Distribution des contraintes dans les assemblages collés :
Exemple des assemblages par tenon et mortaise, et à mi-épaisseur
Comparison between experimental and theoretical analysis of stress distribution in adhesive bonded joints; tenon and mortise joints, and single-lap joints examples
Equipe de recherche en comportement mécanique des matériaux et des structures.
Laboratoire de Science des Matériaux (LSM) - UFR des Sciences Exactes et Naturelles ,
Moulin de la Housse, Reims
We have studied the agreement between theoretical computations and experimental results of surface strains of bonded joints of two types : tenon and mortise, and single-lap joints, for different lengths of the lap. For instance, with the single-lap joint, we have tested four lengths of the overlap from 14 mm to 88 mm. Surface strains are measured by an extensometrical method with electrical gauges, when the specimen is loaded in uniaxial traction on a universal testing machine.
Experimental results and computations made by an improved method like the asymptotic expansion method agree, but only if the global traction load applied on the specimen is low, or if the overlap in respect with the others dimensions of the section of test specimen is long.
In these joints, effectively, stress fields are disrupted near the butts and become very difficult to compute. Actually, near the ends of the overlap, stresses can reach high limits with only low global load applied on the test specimen. With a short length of the overlap, linear behaviour disappears almost totally because of a strong interaction of the two perturbed fields. On the contrary, with a high length of overlap, stress fields become linear on the major part of the overlap , even with a high tensile load applied on the specimen. So, the length of the overlap has a great effect on the linear behaviour of the joint.
© SIRPE 1996
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.