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Global-local modelling approach for the investigation of adhesive bonding in structures

Vadlamani, Shashank and Willberg, Christian (2016) Global-local modelling approach for the investigation of adhesive bonding in structures. NAFEMS India Conference, 29. - 31. Aug. 2016, Bangalore.

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Abstract

Recent advances in light weight material systems have expanded the application range over which adhesive bonded composite joints are used. However, due to the complexity involved, most of the simulations presented are modelled in 2D and/or at a highly detailed level. For an evaluation of an adhesive layer in a global structure one needs to map the knowledge from a local to a global scale and vice versa. The current paper introduces a simple modelling strategy which allows a switch between local and global model without the need for re-meshing and sub-structuring. The proposed model is subjected to elasto-static conditions and verified against the detailed three-dimensional quadratic finite element model. A parametric study is also performed using the new modelling strategy on a singvarying the finite element discretization, adhesive layer thickness, coupling offset and composite stacking sequence. Results show that the proposed modelling strategy is accurate and efficient.

Item URL in elib:https://elib.dlr.de/105824/
Document Type:Conference or Workshop Item (Speech)
Title:Global-local modelling approach for the investigation of adhesive bonding in structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vadlamani, ShashankDepartment of Aerospace Engineering, Indian Institute of Space Science and TechnologyUNSPECIFIED
Willberg, ChristianChristian.Willberg (at) dlr.dehttps://orcid.org/0000-0003-2433-9183
Date:29 August 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:multi-scale modelling; adhesive layer; composite material; coupling; constraint equations
Event Title:NAFEMS India Conference
Event Location:Bangalore
Event Type:international Conference
Event Dates:29. - 31. Aug. 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation, L - Structures and Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Willberg, Dr.-Ing. Christian
Deposited On:04 Nov 2016 14:06
Last Modified:04 Nov 2016 14:06

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