StressCheck Tutorial: Embedding and Meshing a Parametrized Pre-Crack Initiation Surface
Abstract: Parametric modeling of an elliptical pre-crack initiation site based on the expected location and orientation of maximum first principal stress in a hole. For the detailed stress analysis, the crack is initially disabled by inactivating the associated mesh records (Crack Face and Boundary Layer). After the expected crack initiation site is determined, the part-thru crack is clocked and the mesh records are then enabled for subsequent fracture mechanics or damage tolerance analysis of the crack initiation and crack extension.
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Many organizations equate the credibility of simulation results with the experience and judgment of their senior analysts. Without diminishing the value of senior analysts, an evidence-based approach to simulation credibility will reduce both the technical risk of producing incorrect simulation results and management’s risk in the use of simulation results in a decision-making context.
Dr. William OberkampfNAFEMS Tutor and Engineering Consultant