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Jaguar Xk8-The Use of Finite Element Modelling From Concept to Production to Optimize Body Stiffness and Vehicle Refinement
Published November 04, 1997 by Institution of Mechanical Engineers in United Kingdom
The use of Computer Aided Engineering (CAE) throughout the design and development of the XK8 was extensive and instrumental to the products' high quality and program success.
The applications of Finite Element Analysis (FEA) from engine, chassis and body design to full vehicle dynamics and performance are being used widely to produce competitive components and systems. Increasing numbers of design iterations can be analyzed, reducing the need for extensive prototype testing and thus increasing design to production efficiency.
The use of CAD enables detailed and accurate body structure FE models to be created at all levels from concept to final intent.
The design and analysis of the coupe and convertible body structures encompasses several design criteria, from legislative requirements to body stiffness, durability and NVH targets.
This paper shall focus on the development of FE models through all prototype stages used to optimize body torsional stiffness on the XK8. Specific processes and techniques to determine the most sensitive body panels and spotwelds plus model correlation to test data shall be discussed.
The concentrated application of CAE, using both detailed body and full vehicle models to determine the root cause of problems shall be discussed, showing how FEA can help solve complex concerns and reduce the need for intensive vehicle testing and verification