| Coro3dKinematics | determine deformations and kinematic transformation matrices |
| DefGeom_2dFrm | determines current length and corotational diad of 2-node, 2d frame element |
| DefGeom_3dFrm | determines current length and corotational triad of 2-node, 3d frame element |
| DefGeom_Quad | determines local coordinates and corotational triad of quadrilateral element |
| DefGeom_Tri | determines local coordinates and corotational triad of triangular element |
| ElmLenOr | element length and x-axis orientation (direction cosines) |
| GeomTran_2dFrm | kinematic matrices and deformations for a 2-node 2d frame element |
| GeomTran_3dFrm | kinematic matrices and deformations for a 2-node 3d frame element |
| GeomTran_QuadMemb | kinematic matrices and local displacements for a quadrilateral membrane element |
| GeomTran_QuadPlate | kinematic matrices and local displacements for a quadrilateral plate element |
| GeomTran_TriMemb | kinematic matrices and local displacements for a triangular membrane element |
| GeomTran_TriPlate | kinematic matrices and local displacements for a triangular plate element |
| GeomTran_Truss | kinematic matrices and deformations for a 2-node truss element |
| Large2du2v_Frm | determine 2d frame element deformations from end displacements |
| Large3du2ul_Quad | determine the local displacements of a triangular element |
| Large3du2ul_Tri | determine the local displacements of a triangular element |
| Large3du2v_Frm | determine 3d frame element deformations from end displacements |
| Rot2q | convert normalized rotation vector to quaternion representation |
| TranJnt | sets up transformation matrix for finite size joints |
| TranNodeQuat | transforms node quaternions and moments to rotations and moments |
| kg_2dFrm | geometric stiffness matrix for 2-node 2d frame element for different options |
| kg_3dFrm | geometric stiffness matrix for 2-node 3d frame element different options |
| kg_QuadMemb | geometric stiffness matrix for quadrilateral membrane element for different options |
| kg_QuadPlate | geometric stiffness matrix for quadrilateral plate element for different options |
| kg_TriMemb | geometric stiffness matrix for triangular membrane element for different options |
| kg_TriPlate | geometric stiffness matrix for triangular plate element for different options |
| kg_Truss | geometric stiffness matrix for 2d/3d 2-node truss element for different options |
| q2Rmat | determine rotation matrix from normalized quaternions |
| spin | determine the spin tensor of a vector |
| spinblk | determine the spin tensors for a group of vectors |