EINTF
2012-04-11 10:58阅读：
EINTF,
TOLER,
K,
TLAB,
KCN,
DX,
DY,
DZ,
KNONROT
Defines two-node elements between coincident or offset
nodes.PREP7:
ElementsMP ME ST PR PRN <> <> FL EM EH DY PP
<> EME MFS
- TOLER
- Tolerance for coincidence (based on maximum Cartesian
coordinate difference for node locations and on angle differences
for node orientations). Defaults to 0.0001. Only nodes within the
tolerance are considered to be coincident.
- K
- Only used when the type of t
he elements to be generated is
PRETS179.
K is the pretension node that is common to the pretension
section that is being created. If
K is not specified, it
will be created by ANSYS automatically and will have an
ANSYS-assigned node number. If
K is specified but does not
already exist, it will be created automatically but will have the
user-specified node number.
K cannot be connected to any
existing element.
- TLAB
- Nodal number ordering. Allowable values are:
LOW -- The 2-node elements are generated from
the lowest numbered node to the highest numbered node.
HIGH -- The 2-node elements are generated
from the highest numbered node to the lowest numbered node.
REVE -- Reverses the orientation of the
selected 2-node element.
- KCN
- In coordinate system KCN, elements are created between
node 1 and node 2 (= node 1 + dx dy dz)..
- DX, DY, DZ
- Node location increments that define the node offset in the
active coordinate system (DR, Dθ, DZ for cylindrical and DR, Dθ, DΦ
for spherical or toroidal).
- KNONROT
- When KNONROT = 0, the nodes coordinate system is not
rotated. When KNONROT = 1, the nodes belonging to the
elements created are rotated into coordinate system KCN (see
NROTAT command description).
Notes Defines 2-node
elements (such as gap elements) between coincident or offset nodes
(within a tolerance). May be used, for example, to 'hook' together
elements interfacing at a seam, where the seam consists of a series
of node pairs. One element is generated for each set of two
coincident nodes. For more than two coincident or offset nodes in a
cluster, an element is generated from the lowest numbered node to
each of the other nodes in the cluster. If fewer than all nodes are
to be checked for coincidence, use the
NSEL
command to select the nodes. Element numbers are incremented by one
from the highest previous element number. The element type must be
set [
ET]
to a 2-node element before issuing this command. Use the
CPINTF command to connect nodes by coupling instead of
by elements. Use the
CEINTF command to connect the nodes by constraint
equations instead of by elements.
For contact element
CONTA178,
the tolerance is based on the maximum Cartesian coordinate
difference for node locations only. The angle differences for node
orientations are not checked.
Menu Paths
Main
Menu>Preprocessor>Modeling>Create>Elements>Auto
Numbered>At Coincid NdMain
Menu>Preprocessor>Modeling>Create>Elements>Auto
Numbered>Offset Nodes
！具体应用
allsel,all
eplot
nsel,s,loc,y,0 !弹簧单元
nsel,r,loc,z,150,1350
nplot
TYPE,5
MAT,5
REAL,5
ESYS,0
SECNUM,none,
TSHAP,LINE
eintf,0.0001,,low,,,,,
allsel,all
eplot
