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glued contact when a stress criterion is satisfied.
• SimXpert: SimXpert the fully integrated multidiscipline simulation environment, integrated with MSC‘s
advanced multidiscipline (MD) solver technologies, is able to manage the Simulation Process of all the
advanced composite analysis available with these technologies including the Micromechanics approach
based on Alpha Star Genoa material library. SimXpert is a very new interface concept with a direct user
interface and a template builder interface. MD Nastran is fully addressed thru the new preprocessor
SimXpert.
• SimXpert FiberSim integration: MSC SimXpert and Vistagy FiberSIM interconnection is a link between the
CAD draping and FEM analysis in respect to composite part conception phases. The first level based on
‘first’ layup is used for pre sizing and optimization. The second level including draping directions and
thickness variations is used for part validation and certification. SimXpert and FiberSIM offer a native
geometry access to leading commercial CAD systems: CATIA V5, NX and Pro/ENGINEER.
DAY 2 – 4th November 2009
KEYNOTES
Chair: Albrecht Pfaff (MSC.Software GmbH)
Title: Effects of the corrosion on the structural fatigue life and their
management in the in-service ageing aircraft
Author: Mr G. Avalle, L. Fossati, V. Sapienza
Alenia Aeronautica
Time: November 4, 2009 9:00 am
Room: Frequenz 1
The prevention of corrosion is one of the main factors to be taking into account in the Design phase of A/C
structures.
In the military A/C, designed and developed in the early years ’70, the corrosion prevention methodologies
were widely applied by the using of appropriate materials, protective treatments and sealant which were the
“status of art” at that time.
Nevertheless, due to gradually ageing of the Aircraft fleets and also considering the changes in the operational
requirements, the different environmental conditions and the material and protective selection in the design
phase, the arising of corrosion phenomena are inevitable and leads to detrimental effects on aircraft efficiency
and on the related maintenance costs.
Gianni Avalle
24
In case of corrosion, the local stress increase due to thickness reduction and the effects related to the stress
concentration in consequence of the geometry alterations may have implication on fatigue life of the structural
component.
Therefore, in order to maintain the adequate structural safety level, appropriate measures have to be applied in
the management of the corrosion issue on the In-Service aircraft.
Purpose of this paper, is to present for a case of corrosion, a methodology approach based on theoretical
analysis and test to estimate fatigue penalties due to corrosion on an airframe primary component.
Title: Embraer at a glance, engineering tools for aircraft simulation
Author: Mr Marco Cecchini, Alexandre C. de Moura, Fabio R. Soares da Cunha
Embraer
Time: November 4, 2009 9:30 am
Room: Frequenz 1
Embraer was created after Word War II from a strategic national aircraft manufacturing project. As a large
aeronautical company, Embraer has products in three major markets: commercial jets, business jets, and defense.
It is well known that one of the aeronautical industry fundamentals is high technology, and engineering
tools for aircraft simulation play an important role to guarantee the application of cutting edge technology on
product development process. Aeronautical industry uses a large variety of engineering tools to assist product
development such as virtual reality, knowledge based engineering, digital mock-up and manufacturing, structural
analysis, fluid dynamics, systems engineering, and multidisciplinary design optimization. Training and certification
of people are also key points for the success of the company. The development of new technologies
helps to promote continuous enhancement of current engineering processes. In this scenario, data management
is a matter of special attention, and actual processes shall be captured from people’s minds and properly managed.
This work presents challenges of managing and promoting engineering tools on a large aeronautical
company.
SESSION B1A COMPOSITE STRUCTURES
Chair: Chair: Dr Lesli Cohen (Hitco)
Title: Door surround structures for next generation aeroplanes
Authors: Dr C. Hühne, T. Ströhlein
DLR
Time: November 4, 2009 10:45 am
Room: Lumen
Due to the continuous increase of fuel prices and a hard contention, there is a high demand for more efficient
aircrafts. At the same time, passengers demand for more comfort, better entertainment and anytime communication
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