ZeroLengthContactNTS2D
This command is used to construct a zeroLengthContactNTS2D element object. This is a Node-To-Segment (NTS) frictional contact element used in two dimensional analysis for contact between elements with 2 DOF nodes.
| element zeroLengtContactNTS2Dh $eleTag -sNdNum $sNdNum -mNdNum $mNdNum -Nodes $Nodes $Kn $kt $phi |
| $eleTag | unique element object tag |
| $sNdNum | Number of Slave Nodes |
| $matTag1 $matTag2 ... | tags associated with previously-defined UniaxialMaterials |
| $dir1 $dir2 ... | material directions:
1,2,3 - translation along local x,y,z axes, respectively 4,5,6 - rotation about local x,y,z axes, respectively |
| $x1 $x2 $x3 | vector components in global coordinates defining local x-axis (optional) |
| $yp1 $yp2 $yp3 | vector components in global coordinates defining vector yp which lies in the local x-y plane for the element. (optional) |
NOTES:
- The contact element is node-to-segment (NTS) contact. The relation follows Mohr-Coulomb frictional law: <math>T = N tan(\phi)</math>, where T is the tangential force, N is normal force across the interface and ,math>\phi</math> is friction angle.
- For 2D
EXAMPLE:
element zeroLengthContactNTS2D 1 -sNdNum 6 -mNdNum 6 - Nodes 5 10 12 3 9 11 1 4 2 8 7 1e8 1e8 16
Example 1:
Example 2:
REFERENCES:
Code Developed by: R.G. Mikola, UC Berkeley and N. Sitar, UC Berkeley