Hi all and many thanks, I need to load this assembly in both faces as you can see in image.
But I don't know where I have to put the restrictions and what kind of its... Logically, solver send me a message that says unstable model, etc, etc...

I tried to fix with soft spring, but don't work.
Thank you all
http://www.Keytometals.com/Search.aspx?id=Mechanic&LN=EN&id1=400604&id2=580&SessionID=661521131785201120361423B01BPA5EN2F2N939
Los datos son compatibles con el estándar DIN. | Los datos del impacto financiero del material se basan en el precio de la materia prima a granel calculado desde 1. MetalPrices.com (2012). Información consultada el 15 de mayo de 2012 en http://www.metalprices.com/"> http://www.solidworks.com/sldcolorswatch" Ambient="1" Transparency="0" Diffuse="0.79" Specularity="0.88" Shininess="0.21" Emission="0.21"/>
SolidworksSimulation