- S11
Total direct force in the element.
- S12
Tangential (shear) force component, caused by friction, in the plane of the cross-section of the tube.
- S13
Tangential (shear) force component, caused by friction, parallel to the axis of the tube.
The force in the spring link and the force in the dashpot are defined as generalized substresses and, therefore, are available as substress selections in the output options, as follows:
- SS1
Force in the spring link.
- SS2
Force in the dashpot.
The relative axial and tangential displacements corresponding to the forces above are chosen by requesting the corresponding “strains,” except that “strain” component E13 is not defined in element type ITSCYL.
The relative tangential (shear) displacement components during slip are available as “plastic strain” components PE12 and PE13. The “equivalent plastic strain” is defined in these elements as
Δˉusl=∑increments√(Δusl1)2+(Δusl2)2,
where Δusl1 and Δusl2 are the two relative tangential displacement components.