WS5-1 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation WORKSHOP 5 ADVANCED SURFACE MESHER TRIA ELEMENT SURFACES

WS5-2 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation

WS5-3 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation WORKSHOP 5 – ASM TRIA ELEMENT SURFACES

WS5-4 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation Problem Description From a set of simple non-congruent surfaces create a good quality congruent quadralateral element mesh The incongruency is due to gaps and vertices for adjacent surfaces not matching (vertices not coincident) Use the MSC.Patran advanced surface mesher (ASM) Use tria element surface version Use MSC.Patran 2005 WORKSHOP 5 – ASM TRIA ELEMENT SURFACES

WS5-5 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation General outline of analysis steps Use the tria element surface version of the ASM in MSC.Patran 2005 This is the default version, so use the following in the initialization file settings.pcl pref_env_set_logical( asm2_enable, FALSE ) When MSC.Patran 2005 is run, the ASM form should look like the following Follow the steps described in the course notes for the ASM, tria element surface version Import the original surfaces in an MSC.Patran neutral file WORKSHOP 5 – ASM TRIA ELEMENT SURFACES

WS5-6 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation General outline of analysis steps (continued) Add a hole to two surfaces Create an initial tria element mesh for each surface Display free element edges using Cleanup / Verify Close smaller gaps using Cleanup / Auto Stitch Close larger gaps using Cleanup / Stitch Gaps Delete elements for one surface using Cleanup / Delete Face Close one hole using Simplify / Auto Fill Close another hole using Simplify / Fill Hole Combine 15 faces using Simplify / Merge Face Divide a face into two faces using Simplify / Split Face Extend or contract face edge to match other faces using Simplify / Collapse Edge Create final Quad mesh using Final Mesh WORKSHOP 5 – ASM TRIA ELEMENT SURFACES

WS5-7 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation The final quad mesh WORKSHOP 5 – ASM TRIA ELEMENT SURFACES

WS5-8 PAT328, Workshop 5, September 2004 Copyright 2004 MSC.Software Corporation