Eigenvalue extraction for unconstrained patches of elements | ||
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ProductsAbaqus/Standard
Continuum elements
Elements tested
Continuum elements (excluding coupled temperature-displacement and pore pressure elements).
Problem description
The models consist of the same patches of elements used in the tests defined in Patch tests. The first step consists of an eigenvalue analysis of the model with no boundary conditions. The second step applies a uniform pressure load on all four edges and sets the NLGEOM parameter. The third step performs an eigenvalue analysis of the prestressed model with no boundary conditions. Results are printed only for the first and third steps.
Results and discussion
For all elements the number of zero-energy modes for Steps 1 and 3 is the same and matches the number of rigid-body modes given in Eigenvalue extraction for single unconstrained elements.
Input files
- ec3asfe2.inp
-
C3D10 elements.
- ec3ashe2.inp
-
C3D10H elements.
- ec3asie2.inp
-
C3D10HS elements.
- ec3aske2.inp
-
C3D10M elements.
- ec3asle2.inp
-
C3D10MH elements.
- ec3fsfe2.inp
-
C3D15 elements.
- ec3fshe2.inp
-
C3D15H elements.
- ec3isfe2.inp
-
C3D15V elements.
- ec3ishe2.inp
-
C3D15VH elements.
- ec3ksfe2.inp
-
C3D20 elements.
- ec3kshe2.inp
-
C3D20H elements.
- ec3ksre2.inp
-
C3D20R elements.
- ec3ksye2.inp
-
C3D20RH elements.
- ec3rsfe2.inp
-
C3D27 elements.
- ec3rshe2.inp
-
C3D27H elements.
- ec3rsre2.inp
-
C3D27R elements.
- ec3rsye2.inp
-
C3D27RH elements.
- ec34sfe2.inp
-
C3D4 elements.
- ec34she2.inp
-
C3D4H elements.
- ec35sfe2.inp
-
C3D5 elements.
- ec35she2.inp
-
C3D5H elements.
- ec36sfe2.inp
-
C3D6 elements.
- ec36she2.inp
-
C3D6H elements.
- ec38sfe2.inp
-
C3D8 elements.
- ec38she2.inp
-
C3D8H elements.
- ec38sie2.inp
-
C3D8I elements.
- ec38sje2.inp
-
C3D8IH elements.
- ec38sre2.inp
-
C3D8R elements.
- ec38sye2.inp
-
C3D8RH elements.
- eca3sfe2.inp
-
CAX3 elements.
- eca3she2.inp
-
CAX3H elements.
- eca4sfe2.inp
-
CAX4 elements.
- eca4she2.inp
-
CAX4H elements.
- eca4sie2.inp
-
CAX4I elements.
- eca4sje2.inp
-
CAX4IH elements.
- eca4sre2.inp
-
CAX4R elements.
- eca4sye2.inp
-
CAX4RH elements.
- eca6sfe2.inp
-
CAX6 elements.
- eca6she2.inp
-
CAX6H elements.
- eca6ske2.inp
-
CAX6M elements.
- eca6sle2.inp
-
CAX6MH elements.
- eca8sfe2.inp
-
CAX8 elements.
- eca8she2.inp
-
CAX8H elements.
- eca8sre2.inp
-
CAX8R elements.
- eca8sye2.inp
-
CAX8RH elements.
- ece3sfe2.inp
-
CPE3 elements.
- ece3she2.inp
-
CPE3H elements.
- ece4sfe2.inp
-
CPE4 elements.
- ece4she2.inp
-
CPE4H elements.
- ece4sie2.inp
-
CPE4I elements.
- ece4sje2.inp
-
CPE4IH elements.
- ece4sre2.inp
-
CPE4R elements.
- ece4sye2.inp
-
CPE4RH elements.
- ece6sfe2.inp
-
CPE6 elements.
- ece6she2.inp
-
CPE6H elements.
- ece6ske2.inp
-
CPE6M elements.
- ece6sle2.inp
-
CPE6MH elements.
- ece8sfe2.inp
-
CPE8 elements.
- ece8she2.inp
-
CPE8H elements.
- ece8sre2.inp
-
CPE8R elements.
- ece8sye2.inp
-
CPE8RH elements.
- ecg3sfe2.inp
-
CPEG3 elements.
- ecg3she2.inp
-
CPEG3H elements.
- ecg4sfe2.inp
-
CPEG4 elements.
- ecg4she2.inp
-
CPEG4H elements.
- ecg4sie2.inp
-
CPEG4I elements.
- ecg4sje2.inp
-
CPEG4IH elements.
- ecg4sre2.inp
-
CPEG4R elements.
- ecg4sye2.inp
-
CPEG4RH elements.
- ecg6sfe2.inp
-
CPEG6 elements.
- ecg6she2.inp
-
CPEG6H elements.
- ecg8sfe2.inp
-
CPEG8 elements.
- ecg8she2.inp
-
CPEG8H elements.
- ecg8sre2.inp
-
CPEG8R elements.
- ecg8sye2.inp
-
CPEG8RH elements.
- ecs3sfe2.inp
-
CPS3 elements.
- ecs4sfe2.inp
-
CPS4 elements.
- ecs4sie2.inp
-
CPS4I elements.
- ecs4sre2.inp
-
CPS4R elements.
- ecs6sfe2.inp
-
CPS6 elements.
- ecs6ske2.inp
-
CPS6M elements.
- ecs8sfe2.inp
-
CPS8 elements.
- ecs8sre2.inp
-
CPS8R elements.
Beams, pipes, shells
Elements tested
Beams, pipes, general shells.
Problem description
The models consist of the same patches of elements used in the tests defined in Patch tests. There are no boundary conditions defined in these models.
Results and discussion
For all elements the number of zero-energy modes matches the number of rigid-body modes given in Eigenvalue extraction for single unconstrained elements.
Input files
- eb22rxe3.inp
-
B21 elements.
- eb2hrxe3.inp
-
B21H elements.
- eb23rxe3.inp
-
B22 elements.
- eb2irxe3.inp
-
B22H elements.
- eb2arxe3.inp
-
B23 elements.
- eb2jrxe3.inp
-
B23H elements.
- eb32rxe3.inp
-
B31 elements.
- eb3hrxe3.inp
-
B31H elements.
- ebo2ixe3.inp
-
B31OS elements.
- ebohixe3.inp
-
B31OSH elements.
- eb33rxe3.inp
-
B32 elements.
- eb3irxe3.inp
-
B32H elements.
- ebo3ixe3.inp
-
B32OS elements.
- eboiixe3.inp
-
B32OSH elements.
- eb3arxe3.inp
-
B33 elements.
- eb3jrxe3.inp
-
B33H elements.
- ep22pxe3.inp
-
PIPE21 elements.
- ep2hpxe3.inp
-
PIPE21H elements.
- ep23pxe3.inp
-
PIPE22 elements.
- ep2ipxe3.inp
-
PIPE22H elements.
- ep32pxe3.inp
-
PIPE31 elements.
- ep3hpxe3.inp
-
PIPE31H elements.
- ep33pxe3.inp
-
PIPE32 elements.
- ep3ipxe3.inp
-
PIPE32H elements.
- esf3sxe3.inp
-
S3/S3R elements.
- ese4sxe3.inp
-
S4 elements.
- esf4sxe3.inp
-
S4R elements.
- es54sxe3.inp
-
S4R5 elements.
- es68sxe3.inp
-
S8R elements.
- es58sxe3.inp
-
S8R5 elements.
- es59sxe3.inp
-
S9R5 elements.
- es63sxe3.inp
-
STRI3 elements.
- es56sxe3.inp
-
STRI65 elements.