Relationship between Jc and the dissipation energy in the adhesive layer of a layered composite

• Published in: International journal of fracture Vol. 224; no. 2; pp. 277 - 284
• Main Authors: Berto, F., Glagolev, V. V., Markin, A. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-08-2020; Springer Nature B.V
• Subjects: Automotive Engineering; Brief Note; Characterization and Evaluation of Materials; Chemistry and Materials Science; Civil Engineering; Classical Mechanics; Composite materials; Elastoplasticity; Energy dissipation; Free energy; Integrals; Laminates; Materials Science; Mechanical Engineering; Multilayers; Thickness; Fracture of material volume; Energy product; Energy product of dissipation; integral
• ISSN: 0376-9429; 1573-2673
• DOI: 10.1007/s10704-020-00464-0

Fracture of the adhesive layer (AL) of finite thickness with elastoplastic properties in a layered composite is considered in this article. The expression of the
J
C
-integral is obtained as the sum of values of the products of the layer thickness and the increments of the specific free energy and specific dissipation. Based on the variational formulation, a solution to the model problem of shear action on a thin elastoplastic layer is obtained. From the analysis of the solution obtained, it follows that in the case of a layer degenerating into a mathematical section, the main contribution to the representation of the
J
C
-integral is made by the term responsible for the energy dissipation, and the energy product tends to zero. In this case, it is not pure dissipation that is considered, this is the product of specific dissipation and layer thickness. The expression of the
J
C
-integral is obtained in terms of the quantities measured in a possible experiment.