Title: Compression of Offset Curved Laminates

Authors: Max R Kauphusman, Grace A. Eischens, Parker N. Dallek, Eric O. Kerr-Anderson

DOI: 10.33599/nasampe/c.24.0324

Abstract: For decades, much work has been done to isolate specific loading modes (compression, tension, shear) when performing mechanical testing. Inevitably, this leads to geometrically simple specimens tested under elementary loading conditions. Real-world applications, however, are rarely so straightforward, integrating both combined loading as well as complex geometry. Moreover, exact, continuous predictive models for these scenarios are nearly impossible to develop without making considerable assumptions. Instead of these solutions, finite element analysis (FEA) has become the standard tool for simulation in industry. FEA involves the discretization of complex geometry into rudimentary elements, each with a far simpler mathematical solution. This process has grown with the processing capabilities of computers and is now incorporated into most professional CAD programs. FEA itself, however, struggles to handle the internal complexity of composite materials with mixed modes of compression tension and shear. This makes accurate FEA predictions of the behavior of real-world composite parts challenging. Non-flat composite laminates were tested under compression to investigate these behaviors and compare to FEA predictions. These laminates were created by a wet layup method and laid onto 3d printed tools with various curvatures. Additionally, all results were recorded in a database focused on the effects of compressive stresses on non-flat composite parts. This database is intended to grow and provide easy-access information for those learning about or designing composite parts with different types of curvature.

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Conference: CAMX 2024 | San Diego CA

Publication Date: 2024/9/9

SKU: TP24-0000000324

Pages: 14

Price: $28.00