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HW 2: Stress Concentrations

HW 2: Stress Concentrations. Analysis Details: static analysis objective: determine the peak stress in the body 3D quadratic solid elements DOF: material properties: E, all DOF fixed on left face force on right face normal to surface. HW 2: Stress Concentrations.

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HW 2: Stress Concentrations

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  1. HW 2: Stress Concentrations • Analysis Details: • static analysis • objective: determine the peak stress in the body • 3D quadratic solid elements • DOF: • material properties: E, • all DOF fixed on left face • force on right face normal to surface

  2. HW 2: Stress Concentrations • SolidWorks Tips & Tricks: • how to apply fixed displacements on a face • how to apply a load to a face (reverse direction, set loading value) • how to display different stress components (SX, SY, SZ, TXY, TXZ, TYZ, VON, . . .) • how to use first order elements (linear) and second order elements (quadratic) • simulation > options > default options > mesh quality (draft = linear; high = quadratic) • how to control the maximum element size manually • course to fine slider OR keying in the maximum element size • for a tetrahedral element, the element size is the diameter of a sphere that can contain the element • how to find the total DOF for the model: results > solver messages • Other Things to Remember: • how to analytically estimate peaks stresses: • where comes from a chart • how to analytically compute von Mises stress from components • that restraints are the most tricky thing about setting up a FEA model • models with more elements are usually more accurate but take longer to run

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