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StressCheck Tutorial: Embedding and Meshing a Parametrized Pre-Crack Initiation Surface

Home ShopFracture Mechanics ModuleStressCheck Tutorial: Embedding and Meshing a Parametrized Pre-Crack Initiation Surface

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.

Part 2: StressCheck Tutorial: Modeling a Broken Hole Ligament

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Related Content:

  • StressCheck Tutorial: Computation of Kt and Crack Initiation Beta Factor for a 2D Notched Plate in Tension
  • StressCheck Tutorial: Embedding 3-Point Plane for Resultant Extractions
  • StressCheck Tutorial: Transitioning from Part Thru to Thru Crack
  • StressCheck Tutorial: Extending an Elliptical Crack and Updating Mesh Assignments
  • StressCheck Tutorial: Modeling and SIF Extraction for a 3D Loaded Crack Face

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Categories: Fracture Mechanics Module, MeshSim Advanced Module, StressCheck Core, StressCheck Professional. Tags: Damage Tolerance, Fracture Mechanics, Geometry, Meshing, Parametric Modeling, Solid Modeling, StressCheck GUI.

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Testimonials

“The addition of incremental theory of plasticity in StressCheck has greatly improved our ability to accurately predict the fatigue life of joints with interference fit fasteners and cold worked holes. This ability is especially important, not only in support of maintaining aging aircraft but also in analyzing some of the new cold working techniques that have been introduced in recent years.
Prior to this implementation, analysts often relied on closed-form approximations or simple factors that were often overly conservative and sometimes even unconservative when used in life prediction. Now, not only can we more accurately predict residual stresses in these complex structural joints, but we can also do so in a timely manner given the modeling and analysis efficiency that exists with a p-version FEA code such as StressCheck.”

F-15 Structures Manager, The Boeing Company

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