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NX 11 FEA Surface Surface Contact Problem

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AirMayer999

Mechanical
Joined
Nov 30, 2017
Messages
1
Location
GB
Hi,

I'm new to NX and i've been having some issues.
I'm trying to model the static loading of a wheel on a train. As well as the loadings and constraints i have specified a surface -surface contact between the wheel and the rail. In a previous solution this worked fine but now it doesn't work. Instead rather than a reaction force forming the wheel penetrates the rail.

I don't understand why this happens. I have attached my files, if anyone could help i would really appreciate it.
thanks
 
 http://files.engineering.com/getfile.aspx?folder=d71ad949-0a41-47ad-b816-4f4f6362b6bf&file=axle_-_Copy.prt
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