How to rigid a surface and apply B.C. on edges of surface together

[Rameel]

Hi Dear All,
My Model is a cube,working in Standard CAE, element type is C3D20R and i have to find out shear modulus. For that i am applying displacement BC on Z=L plane in U11 direction.BC are as follows

Plane X Y Z
Z=L .002 0 0
Z=0 0 0 0
Y=L Free 0 0
Y= 0 Free 0 0

I am making Plane X=0 and X=L rigid,,, so that i could get plane surfaaces at x=0 and X=L plane after deformation.

Error i am gettinng is inactive degree of freedom,,,bcz surfaces which are rigid also have BC on their edge nodes.

Any kind of help will be highly appreciated.
thanks

 

[Nileo2005]

How are you making only a a part of an object rigid?

 

[Rameel]

ya i am making two surfaces of an object rigid

 

[Rameel]

I am making two surfaces(in X Planes) of a cube rigid, and its a 3D problem.
While edge nodes of those two surfaces are shared with other surfaces(in planes Y and Z)which have boundary conditions.
So i get warning of inactive degrees of freedom