WS2-1 WORKSHOP 2 IMPORTING A PRESSURE FIELD PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation

WS2-2 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation

WS2-3 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation n Problem Description u A flat plate is placed in a pressure field. The pressure distribution data is contained in a spread sheet. u Perform a structural analysis to determine the stresses and deformation of the plate when placed at a specific location in the pressure field.

WS2-4 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation n Suggested Exercise Steps 1. Create a database 2. Create a flat plate 3. Mesh the plate with quad elements 4. Import the spreadsheet data to create a Patran Field 5. Apply an element uniform pressure load with the field 6. Apply an element variable pressure load with the field

WS2-5 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 1: Create a Database Create a Database. a.File/New… b.Enter plate for File name. c.Click OK. d.Click Default for Tolerance in New Model Preferences. e.Click OK. a e d bc

WS2-6 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 2: Create a Surface Create a surface. a.Geometry: Create/Surface/XYZ b.Enter for Vector Coordinates List. c.Enter [1 1 0] for Origin Coordinates List. d.Click Apply. a b c d Entering coordinates for the origin determines where the plate will be placed in the pressure field.

WS2-7 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 3: Mesh the Surface IsoMesh the surface. a.Elements: Create/Mesh/Surface b.Select Surface 1. c.Enter 0.5 for Global Edge Length. d.Click Apply. a b c d

WS2-8 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 4: Import Data Into a Field Configure the field options. a.Fields: Create/Spatial/Tabular Input b.Enter press for the Field Name. c.Select X and Y as Active Independent Variables. d.Click Options. e.Select Set Value to Zero for Extrapolation Option. f.Select Abort for Incomplete Data Action. g.Click OK. Setting the Incomplete Data Action to Abort prevents the importation of incomplete data. a b c d e f g

WS2-9 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 4: Import Data Into a Field Import the spreadsheet data into a field. a.Click Input Data. b.Click Import/Export. a b

WS2-10 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 4: Import Data Into a Field Import the spreadsheet data into a field. a.Select CSV Import. b.Click CSV Import Options. c.Select Comma for Value Separator. d.Select Ignore First Line. e.Click OK. f.Select the file Pressure.csv. g.Click Apply. a b c d e f g

WS2-11 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 4: Import Data Into a Field View imported data. a.Review the pressure data. b.Click OK. c.Click Apply. a b c

WS2-12 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 5: Apply Pressure Load Apply the pressure distribution. a.Loads/BCs: Create/Pressure/ Element Uniform. b.Enter pressure_elem_uniform for New Set Name. c.Select 2D for the Target Element Type. d.Click Input Data. e.Click in the Top Surf Pressure box and select press from the list of Spatial Fields. f.Click OK. g.Click Select Application Region. h.Select Surface or Face. i.Select Surface 1. j.Click Add. k.Click OK. l.Click Apply. a b c d e f g i j l k h

WS2-13 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 5: Apply Pressure Load Plot the pressure distribution. a.Display: Load/BC/Elem.Props b.Select Show on FEM Only. c.De-select show LBC/El Prop. values. d.Click Vectors/Filters. e.Select Scaled-Model Relative for the Vector Control. f.Click Apply. g.Click Cancel. h.Click Apply. i.Click Cancel. b d e f a g h c i

WS2-14 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation This is a plot of the pressure data imported from the spreadsheet applied as a constant value for each element. Note that there is one pressure value for each element. Step 5: Apply Pressure Load Plot the pressure distribution. a.Loads/BCs: Plot Markers b.Select Press_pressure_elem _uniform. c.Select the default group. d.Click Apply. c b a d

WS2-15 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 5: Apply Pressure Load Plot the pressure distribution. a.Reset Graphics b.Loads/BCs: Plot Contours/Pressure c.Select pressure_elem_uniform under Existing Sets. d.Select Top Surf Pressure. e.Select default_group. f.Click Apply. b c d e f a

WS2-16 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation i j k h Step 6: Apply Pressure Load Apply another pressure distribution. a.Loads/BCs: Create/Pressure/ Element Variable. b.Enter pressure_elem_variable for New Set Name. c.Select 2D for the Target Element Type. d.Click Input Data. e.Click in the Top Surf Pressure box and select press from the list of Spatial Fields. f.Click OK. g.Click Select Application Region. h.Select Surface or Face. i.Select Surface 1. j.Click Add. k.Click OK. l.Click Apply. a b c d e f g l

WS2-17 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation This is a plot of the pressure data imported from the spreadsheet and applied as variable values across the elements. Note that the pressure now varies across an element. Step 6: Apply Pressure Load

WS2-18 PAT328, Workshop 2, September 2004 Copyright 2004 MSC.Software Corporation Step 6: Apply Pressure Load Plot the pressure distribution. a.Reset Graphics b.Loads/BCs: Plot Contours/Pressure c.Select pressure_elem_variable under Existing Sets. d.Select Top Surf Pressure. e.Select default_group. f.Click Apply. b c d e f a