Fall 2005, METBD450 - FEA Applications II

Mapped Meshing/Concatenation

Prof. Dave Johnson, dhj1@psu.edu, Penn State - Erie, The Behrend College

Homework Assignment 3-B

Concepts:

• 3D Brick Mapped Meshing
• Concatenation of Areas and Lines
• Symmetry

A 6"x6"x6" block of aluminum has a 1" radius hole through one axis, centered in two opposite faces.  Each end of the hole has a 0.5"x0.5" chamfer. 
Aluminum material: E = 10x10⁶ psi, Poisson's ratio = 0.32
A pressure load of 1000 psi acts over the 1" radius section of the hole.  The block is completely fixed on the left and right sides:

What symmetry exists in this system ?

Make ONE volume, concatenate, and use Hex - Mapped - Meshing

OPTION A:  ANSYS

Turn in:

• A volume plot of your model
• An element plot showing the mesh for your model.  
  (Annotate the 3D Solid Hex element you chose from the element library)
• An node plot showing ALL boundary conditions.
• A contour plot of the vonMises stress in this part.
• Show SERR and annotate SEPC on the plot.
• Check the reaction forces (X & Y directions), use FSUM
  Verify with a hand calculation of the X & Y components of the pressure load.
• Include the annotated log file, showing the model generation and solution.

OPTION B:  Use ANSYS Workbench - create a Hex Dominant Mesh

Turn in:

• A solid model plot 
• An element plot showing the mesh for your model.  
  (Report ALL the 3D Solid element types used for this simulation.  Report the total number of nodes and the number of elements for each element type)
• A solid model plot showing ALL boundary conditions.
• A contour plot of the vonMises stress in this part.
• Show an SERR plot; find and include SEPC in your report.
• Check the reaction forces (X & Y directions), use the FSUM command.
  Verify with a hand calculation of the X & Y components of the pressure load.
• NO log file required for the Workbench option.