In this paper a theoretical analysis regarding mechanical behaviour of an aerospace part - a nozzle guide vane (NGV) - starting from macro scale effects up to micro scale domain mechanics evaluation is presented. The authors employed the methods available to address a closed loop system for the clamping forces, the part deformation, new simulation aspects of PZT actuators and sensors for fixturing principles of aeronautic structures compared with principles of a smart grinding fixture controller. The FEM allows to analyse workpiece deformation, influence of location errors and fixture deformation. To reduce the time consuming FE-meshing of the free form shaped NGV, a new technique of parametric modelling has been developed. Finally, strategies for new sensor/actor (designed) clamping mechanisms are discussed. A preliminary mechatronic model which is able to reproduce (and predict) the basic multifunctional features of a case-study design within a virtual environment is discussed. In the next steps, experimental investigations to find out the time and localisation depending grinding forces is going to be done and a demonstrator for the presented closed-loop fixing systems is going to be developed.
Investigations to new fixturing principles for aerospace structures
2007
17 Seiten, 11 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
Application of Flexible Fixturing to Aluminum and Composite Bonded Aerospace Structures
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