Innovative finite element techniques for strength prediction of bonded joints [Tehnici inovative de analiz¿ cu elemente finite a rezisten¿ei îmbin¿rilor lipite]

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Campilho, RDSG (Author) Other; Banea, MD (Author) FEUP; da Silva, LFM (Author) FEUP

Journal

Title: Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology

Vol. 23

Pages: 26-33

ISSN: 1221-4639

Publisher: Galati University Press

Indexing

ISI Web of Knowledge

Scopus - 0 Citations

Other information

Authenticus ID: P-008-9HN

Abstract (EN): The structural integrity of multi-component structures is usually determined by the strength and durability of their unions. Adhesive-bonding is often chosen over welding, riveting and bolting, due to the reduction of stress concentrations, reduced weight penalty and easy manufacturing, amongst other issues. In the past decades, the Finite Element Method (FEM) has been used for the simulation and strength prediction of bonded structures, by strength of materials or fracture mechanics based criteria. Cohesive-zone models (CZM) have already proved to be an effective tool in modelling the damage growth, surpassing a few limitations of the aforementioned techniques. Despite this fact, they still suffer from the restriction of damage growth only at predefined growth paths. The eXtended Finite Element Method (XFEM) is a recent improvement of the FEM, developed to allow the growth of discontinuities within bulk solids along an arbitrary path, by enriching degrees of freedom with special displacement functions, thus overcoming the main restriction of CZM. These two techniques were tested to simulate adhesively-bonded single and double-lap joints. The comparative evaluation of the two methods showed their capabilities and/or limitations for this specific purpose. © Galati University Press, 2012.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8