!ELEMENT¶
Definition of elements
1st line
| Parameter | |
|---|---|
TYPE |
Element type (required) |
EGRP |
Element group name (optional) |
MATITEM |
Number of property items when material properties are defined for each element |
| (Not used when properties are defined for each section) | |
INPUT |
External file name (optional) |
| Parameter | Value | Description |
|---|---|---|
| TYPE | 111 | Rod/link element (linear) |
| 231 | Triangular element (linear) | |
| 232 | Triangular element (quadratic) | |
| 241 | Quadrilateral element (linear) | |
| 242 | Quadrilateral element (quadratic) | |
| 301 | Truss element (linear) | |
| 341 | Tetrahedral element (linear) | |
| 342 | Tetrahedral element (quadratic) | |
| 351 | Triangular-prism element (linear) | |
| 352 | Triangular-prism element (quadratic) | |
| 361 | Hexahedral element (linear) | |
| 362 | Hexahedral element (quadratic) | |
| 541 | Interface element (quadrilateral cross section, linear) | |
| 611 | Beam element (linear) | |
| 641 | Beam element (linear, using four 3-DOF nodes) | |
| 731 | Triangular shell element (linear) | |
| 741 | Quadrilateral shell element (linear) | |
| 743 | Quadrilateral shell element (quadratic) | |
| 761 | Triangular shell element (linear, using six 3-DOF nodes) | |
| 781 | Quadrilateral shell element (linear, using eight 3-DOF nodes) | |
EGRP |
<egrp> | Element group name (optional) |
INPUT |
<filename> | External file name (optional); may also be used together with the 2nd and subsequent lines |
2nd line and later
| Variable | Attribute | Description |
|---|---|---|
| ELEM_ID | I | Element number |
| nodX | I | Connectivity |
| MATy | R | Property value for each element |
Notes
- For details of element types and connectivity, see “Chapter 4 Element Library.”
- Nodes specified in the connectivity must be defined before “
!ELEMENT”. - Element numbers do not need to be consecutive.
- The “
!ELEMENT” option may be defined any number of times. - Element numbers must be positive integers and cannot be omitted.
- If the same element number is used more than once, the last value entered is used. In this case, a warning message is output.
- Undefined nodes cannot be used in connectivity.
- The definition of a single element may span multiple lines.
Example