Element Types
Stress/Displacement Elements
- CAXA4N
-
Bilinear, Fourier quadrilateral with 4 nodes per r–z plane
- CAXA4HN
-
Bilinear, Fourier quadrilateral with 4 nodes per r–z plane, hybrid with constant Fourier pressure
- CAXA4RN
-
Bilinear, Fourier quadrilateral with 4 nodes per r–z plane, reduced integration in r–z planes with hourglass control
- CAXA4RHN
-
Bilinear, Fourier quadrilateral with 4 nodes per r–z plane, reduced integration in r–z planes, hybrid with constant Fourier pressure
- CAXA8N
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane
- CAXA8HN
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane, hybrid with linear Fourier pressure
- CAXA8RN
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane, reduced integration in r–z planes
- CAXA8RHN
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane, reduced integration in r–z planes, hybrid with linear Fourier pressure
Active Degrees of Freedom
1, 2
Additional Solution Variables
The bilinear elements have 4N and the biquadratic elements 8N additional variables relating to uθ.
Element types CAXA4HN and CAXA4RHN have 1+N additional variables relating to the pressure stress.
Element types CAXA8HN and CAXA8RHN have 3(1+N) additional variables relating to the pressure stress.
Pore Pressure Elements
- CAXA8PN
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane, bilinear Fourier pore pressure
- CAXA8RPN
-
Biquadratic, Fourier quadrilateral with 8 nodes per r–z plane, bilinear Fourier pore pressure, reduced integration in r–z planes
Active Degrees of Freedom
1, 2, 8 at corner nodes
1, 2 at midside nodes
Additional Solution Variables
8N additional variables relating to uθ.