A finite-element method was developed to model the superplastic-forming behavior of aluminium. The F-16 cockpit floor stiffener was modeled with the commercial nonlinear finite-element code ABAQUS, and the results were compared with forming trials. The thickness prediction of the analysis method compared very well with the experimental results obtained from the forming trials. The nonlinear capabilities available with ABAQUS were supplemente by two user-defined subroutines that calculate the constitutive properties of superplastic aluminum and the optimum forming pressure. The ability to simulate the superplastic-forming process reduces the number of forming trials required to produce a quality part and ensures that the thickness of the part will be acceptable.
Finite element analysis of the superplastic forming of an aircraft component with complex geometry
Finite Elemente Analyse des superplastischen Umformprozesses von Flugzeugbauteilen mit komplexer Geometrie
1990
11 Seiten, 5 Bilder, 6 Quellen
Conference paper
English
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