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!ELEMENT

Definition of elements

1st Line

!ELEMENT, TYPE=<type> [, optional parameter]
Parameter
TYPE Element type (mandatory)
EGRP Element group name (omissible)
MATITEM Number of physical property items when defining the material physical properties for each element (not used when defining physical properties for each section)
INPUT External file name (omissible)
Parameter Name Parameter Value Contents
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)
511 Connector element for spring/dashpot (2 nodes, Linear)
541 Interface element (Quadrilateral cross section, Linear)
611 Beam element(Linear)
641 Beam element(Linear, with 3-dof nodes)
731 Triangular shell element (Linear)
741 Quadrilateral shell element (Linear)
743 Quadrilateral shell element (Quadratic)
761 Triangular shell element (Linear, with 3-dof nodes)
781 Quadrilateral shell element (Linear, with 3-dof nodes)
EGRP <egrp> Element group name (omissible)
INPUT <filename> External file name (omissible), can also be used together with the 2nd line or later

2nd Line or later

(2nd Line) ELEM_ID, nod1, nod2, nod3, ..., MAT1, MAT2, ...
(Hereinafter the same)
Parameter Name Attributions Contents
ELEM_ID I Element number
nodX I Connectivity
MATy R Physical Property value for each element

Note:

  • For details of the element types and connectivity, refer to "Chapter 4 Element Library".
  • The node specified by the connectivity must be defined before "!ELEMENT".
  • The element numbers do not have to be continued.
  • The "!ELEMENT" option can be defined any number of times.
  • The element number must be a natural number. This can not be omitted.
  • When the same element number is used repeatedly, the value input last will be used. In this case, a warning message will be output.
  • Undefined nodes can not be used for connectivity.
  • The definition of one element can be described in multiple lines.
  • Element type 511 is a 2-node connector element that represents a spring (!SPRING_A / !SPRING_D) or a dashpot (!DASHPOT_A / !DASHPOT_D). Give the two nodes to be connected as its connectivity, and specify TYPE=INTERFACE in the corresponding !SECTION. The spring constant and the damping coefficient are given under !MATERIAL in the analysis control data (cnt).

Example of Use

!ELEMENT, TYPE=231
1, 1, 2, 3
2, 4, 8, 5
4, 6, 7, 8
!ELEMENT, TYPE=361, EGRP=A
101, 101, 102, 122, 121, 201, 202, 222, 221
102, 102, 103, 123, 122, 202, 203, 223, 222
103, 103, 104, 124, 123, 203, 204, 224, 223
!ELEMENT, TYPE=511, EGRP=ESPRING
201, 1, 101
202, 2, 102