I have a new question:
Does somebody know if it is possible to plot material specific data in the post processor e.g. to get the information stored in the material card assigned to a certain plate, such as yield stress for each node of a model?
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You can set the mesh color basis (Model Display Preferences / Element / Color Basis) to Material Property Table. If you use this and set your Simulation Navigator to Material Property View, you will get a color key to which material is assigned to each mesh.
There is no out of the box capability to query individual property values for a specific finfite element entity.
There are tools in the API to query the material properties. A NX Open routine could be written to query these values and write them to a custom results file that can be used in Post Processing to generate a contour plot.
To add to what Jim stated, the next version of NX (soon to be released) will have a capability that allows a user to do the type of yield stress display that you desire. It may require some user coding to access the material data in NX, but it won't require the user to create results and write them to external files. The attached image is a plot of yield stress based upon a temperature dependent yield stress curve and a temperature load that varies across the model. This type of result is possible in the upcoming release of NX with out of the box tools. This particular image leveraged a user defined plugin function that looked up the temperature dependent yield stress for a given element/node.