GeoVarProject reference: 632447
Funded under :
Non-rigid geometry variation for fabricated aero structure
Total cost:EUR 449 919
EU contribution:EUR 337 437
Topic(s):JTI-CS-2013-2-SAGE-02-035 - Non-rigid geometry variation simulation for fabricated aero engine structures
Call for proposal:SP1-JTI-CS-2013-02See other projects for this call
Funding scheme:JTI-CS - Joint Technology Initiatives - Clean Sky
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.
EU contribution: EUR 138 751
Tel.: +46 317723128
EU contribution: EUR 119 936
971 87 LULEA
Tel.: +46 920491306
EU contribution: EUR 56 250
461 86 TROLLHATTAN
Tel.: +46 520223358
EU contribution: EUR 22 500
SE431 64 MOELNDAL
Tel.: +46 703088616