need hyperworks example file

now I am doing optimization based on radioss analysis by student version, but I can't find the example file51 in the demo/radioss..., can you send me the file, thank you very much.
secondly, I want to do non-linear buckling optimization, but the example 38 just show the radioss analysis, I want to know whether the hyperworks can do non-linear buckling optimization? 
 thank you very much!
 

<?xml version="1.0" encoding="UTF-8"?>