Original scientific paper

https://doi.org/10.32762/zr.23.1.2

Modelling Adhesive Using Non-Linear Truss Elements in Mode I Delamination Problems

Maedeh Ranjbar orcid.org/0000-0002-7433-253X ; University of Rijeka, Faculty of Civil Engineering
Gordan Jelenić orcid.org/0000-0001-5130-1223 ; University of Rijeka, Faculty of Civil Engineering
Leo Škec orcid.org/0000-0002-0074-7169 ; University of Rijeka, Faculty of Civil Engineering

Abstract

A fast and simple finite element model is presented in this paper to simulate the crack propagation in notched beam structures with two layers and one interface medium in Mode I delamination. The truss elements from FEAP element library are endowed with a user material law describing the bilinear cohesive zone model (CZM) with the material unloading path defined by embedding a history variable in the response. The layer is modelled with linear elastic Timoshenko beam elements. The method is used for damage growth and damage propagation simulations in interfaces with both ductile and brittle materials. The method is robust for ductile interfaces, but for brittle interfaces more specific numerical techniques are required. The results are evaluated using available analytical and numerical solutions and a good agreement is achieved.

Keywords

DCB test; Crack propagation; Cohesive Zone Model; FEAP implementation

Hrčak ID:

248695

URI

https://hrcak.srce.hr/248695

Publication date:

23.12.2020.

Article data in other languages: croatian

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