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Non-rigid geometry variation for fabricated aero structure

Obiettivo

In traditional 3D variation simulation (stack-up’s) it is common to consider that the parts are rigid. However, often in production forces are applied manually or by different fixturing solutions to assure that requirements on offset are fulfilled before welding parts together in an assembly. This causes the parts to bend and rigid analysis is therefore not valid. Depending on assembly sequences and geometry variation of incoming material, different fixturing forces need to be applied from component to component to assure the right fit in the seam before welding. It may even be necessary to use active fixturing where the forces are varying during the welding process. The welding process itself also contributes with variation that needs to be considered in order to fulfil geometrical requirements.

This project proposes a novel way to combine variation and welding simulation to support the design of future welding fixtures for aircraft engine components. Non-rigid Geometrical Variation Simulation will be further developed to optimize locator and support positions in order to minimize geometrical variation in the weld gap and also take fixturing forces into consideration. Computational Welding Mechanics simulations with integrated control functions will be further developed to prescribe fixturing forces for maintaining specific tolerances ahead of the weld for a stable weld process.
The simulation areas will be combined and integrated to support the design of a physical welding fixture suitable for fabrication of aircraft engine components. The results will be demonstrated virtually and physically.

Invito a presentare proposte

SP1-JTI-CS-2013-02
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Coordinatore

CHALMERS TEKNISKA HOEGSKOLA AB
Indirizzo
-
41296 Goeteborg
Svezia
Tipo di attività
Higher or Secondary Education Establishments
Contributo UE
€ 138 751
Contatto amministrativo
Christina Haglund (Ms.)

Partecipanti (3)

LULEA TEKNISKA UNIVERSITET
Svezia
Contributo UE
€ 119 936
Indirizzo
Universitetsomradet Porson
971 87 Lulea
Tipo di attività
Higher or Secondary Education Establishments
Contatto amministrativo
Lars-Erik Lindgren (Prof.)
HOGSKOLAN VAST
Svezia
Contributo UE
€ 56 250
Indirizzo
Hogskolan Vast
461 86 Trollhattan
Tipo di attività
Higher or Secondary Education Establishments
Contatto amministrativo
Per Nylén (Prof.)
RD&T TECHNOLOGY AB
Svezia
Contributo UE
€ 22 500
Indirizzo
Stenhyddegatan 5
SE431 64 Moelndal
Tipo di attività
Private for-profit entities (excluding Higher or Secondary Education Establishments)
Contatto amministrativo
Lars Lindkvist (Dr.)