Importing Foreign Data and Maintaining Associativity

Importing Foreign Data and Maintaining Associativity Marilyn Tomlin CAE COE March 2009

Associativity for Imported Data • Create a new part • Import IGES/ProE/STEP data • Switch to Advanced Simulation and create and Idealized part, FEM and SIM. • Switch to the Idealized part. • Insert/Associated Copy/Wave Link • Select all bodies • In the FEM and SIM files, create the mesh, properties and boundary conditions. Solve the model. • SAVE ALL files. • Create a new part. • Import the revised geometry in the same format. Green lettering indicates the steps required to maintain associativity.

Associativity for Imported Data • Switch to the Idealized part and the Modeling application. • Open the assembly tab, highlight the original part. • Under the 3rd MB, Select “Replace Component” • When prompted select the revised part • Switch to the Part Navigator, highlight the Linked Part. • Under the 3rd MB, Select “Update Link” • Select the replacement part • Select the Replacement Assistant • Select the geometric update

Associativity for Imported Data • Switch to the FEM and update the Mesh. • If any modifications were done on the FE entity level, they will need to be repeated. • In the SIM, create a clone of the original solution. Solve the new model. • Both results files are available to compare.

Setting Defaults • Verify that the defaults shown have been set. • File • Options • Customer Defaults • These are required for the idealized geometry.

Create a New Part • A new part must be created before importing data.

Importing Data • Select the import file type desired. • Fill out the required data on the form.

Create FEA Files • Switch to the Advanced Simulation application. • Create a new FEM and SIM. • Make sure that “Create Idealized Part” option is checked. To make geometry selection easier, change the use bodies to ‘Select Bodies’ and do not select any bodies.

Create Wave Link • Switch to the Idealized part. • Create a wave link of the geometry. • All bodies can be selected. • Turn on the “Hide Original” option.

Create FEA Model • If the “Select Bodies” option was chosen, you need to add geometry to the FEM. • Highlight the FEM • Under the 3rd Mouse button, select Edit • Select all bodies. • Only the linked bodies should be displayed

Create FEA Model • Create the required mesh in the FEM. • Create the desired boundary conditions in the SIM.

Solve • Solve • Review Results • SAVE ALL files

Revised Part • Create a new file and import the revised data.

Using the Revised Part • Switch to the idealized part. • Select the Assembly Navigator. • Highlight the part • Under 3rd Mouse Button, select When prompted select the revised part. This part can be loaded into NX or can be selected from the O/S.

JT Update • For JT files, a new revised part does not need to be created. • Replace the original JT file on the O/S with the revised JT. • Use the same name Make the part the displayed part. Select: File/Properties Select: Update Part File Switch to the idealized part.

Updating the Part • Switch to the Part Navigator • Highlight the Linked Body • Under the 3rd Mouse Button select Edit Parameters • Select the new body. • Select the Replacement Assistant

Updating the Part • Select the Geometric matching algorithm • Select the Find Geometric Matches

Updating the Part • To verify matches, each match can be highlighted. • The total number of matches will be shown in the lower right corner.

Updating FEM • Switch to the FEM. • Select the Update Mesh icon.

Clone the Solution • Highlight Solution 1 • Under 3rd Mouse Button select Clone • Rename the new Solution

Compare Solutions • Solve the new solution. • Both solutions can be displayed in the Post Navigator.

Weld Example • Original part is shown. There are 2 bodies. • The weld was added to the idealized part.

FEM and SIM • The mesh and boundary conditions were applied. • The model was solved.

Updated Part • The model was updated. • The new FEM is shown.

THANK YOU!

Importing Foreign Data and Maintaining Associativity