StressCheck Tutorial: Linear vs Nonlinear Results for a Single Lap Joint
Abstract: Comparison between linear, material nonlinear (plasticity effects) and general nonlinear (plasticity + geometric nonlinear effects) for a single lap joint under uniaxial load. Large deformations result for the linear analysis, including unrealistically large rotations at the adhesive, indicating geometric nonlinear analysis is required to represent the solution.
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“Aerospace materials scientists and structural engineers now have a new state-of-the-art software product called StressCheck®, which provides efficient and reliable analysis tools for composite bonded aircraft structures. A composites research team from the aeronautics industry, known as the Composites Affordability Initiative (CAI), has just completed an extensive study of current capabilities in the area of failure analysis tools for composite bonded joints. This study led the CAI team to unanimously choose StressCheck® as the software tool to replace as well as radically improve existing industry standard software currently used to size bonded joints.”
Air Force Research Laboratory (AFRL)