IMAV 2018, Research Conferences, RMIT Melbourne, 19.11.2018
IMAV (International Micro Air Vehicle) conferences are an opportunity for universities and research centres to showcase their work in various fields. list of articles on : http://www.imavs.org/imav2018-proceedings/]
The Team Cigogne of INSA Strasbourg participated this year in this tenth edition in Australia:
Among about fifty conferences, the one proposed by INSA focused on the modelling of a bi-material composite, called a sandwich composite. This light and resistant material is widely used for structures subjected to bending stresses such as aircraft floors or drones wings for example. This composite sandwich is composed of a central core of PVC foam and two carbon skins:
Diagram of the sandwich composite studied
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Composite sandwich drone wing
The complete answer to this problem within the framework of the ELCOD project is given in the scientific paper presented at these conferences under the title: Carbon fibre/PVC foam sandwich composite modelling for MAVs & long range drones structures.
The purpose of this research work started during an IEPT in mechanical engineering is to find a way to implement the characteristics of a material that takes into account the multi-layer & anisotropic aspect. For this, we use a 6×6 matrix can be seen as a generalization of Hook’s law to the three directions of space and taking into account the different layers of the sandwich. This matrix also differentiates the tensile and bending behaviour of the composite. Once the geometry was created in CREO, with the behaviour matrix as material data, we wanted to go further by checking the conformity of this model with reality. That’s why we created an experimental drone wing and its digital clone. The aim is to compare experimental and numerical results on a simplified wing geometry:
Experimental comparison /
of the deformation and stress of a drone wing
The article details the different stages of the work; from tensile tests on specimens to the results of experimental and numerical comparisons. A last part proposes the studies to be continued to complete the digital model in order to have a model closer to reality, and thus more reliable.
The results of this work were presented in Melbourne in November 2018:
Presentation by Martin Lefebvre[Mechanical Engineering 2018 graduate] of the research work.
Presentation by Martin Lefebvre of the research work of our colleagues from ICPEES and In’Air Solutions on the design of an on-board meteorological sensor (First author of the article: Christina Andrikopoulou, ICPEES)
Acknowledgements :
This project is supported by the European ELCOD project. The ELCOD project was implemented as part of the INTERREG V Oberrhein/Superior Rhine programme and was supported by the European Regional Development Fund (ERDF) and the financial co-partners the Grand Est region in France and the Baden-Württemberg and Rhineland-Palatinate regions.
INSA de Strasbourg, ICPEES, In’Air Solutions, Hochschule Offenburg