Zero length contact element error

[shivanirani11]

I am getting some error while executing the zero length element for interface simulation. Can you please tell me the reason behind and solution for it.

WARNING ZeroLengthContact3D::setDomain(): Element 7 has L= 1.41421, which is greater than the tolerance

The syntax for zerolength contact element is given below:
element zeroLengthContact3D $eleTag $sNode $mNode $Kn $Kt $mu $c $dir

Please reply. It will a great help to me.

[mhscott]

A zero length element is meant to connect two nodes having the same coordinates, or within a very small tolerance. Your two nodes are spatially distant 1.41421 units of length apart.