版主能不能开一个贴介绍一下spring单元的使用

yarrort

多谢啊，spring单元本来是很简单，如果配上版主的讲解就更容易懂了，谢谢斑竹，呵呵

yarrort

SPRING POINTS
namei p1i dof1i p2i dof2i pseti printi savei axi ayi azi tbirthi tdeathi
Defines spring elements either between two degrees of freedom at distinct geometry points,
or a “grounded” degree of freedom at a single geometry point. Coincidence checking is used
when generating nodes at the geometry points, with tolerance adjusted by the command
TOLERANCES GEOMETRIC.
Note: The current element group must be of type SPRING for this command to be active.
namei
Label number of a spring element.
p1i
Label number of the first (or only) geometry point at one end of the spring element.
dof1i
The degree of freedom selected for the spring element at the first point “p1i”.
1 X translation.
2 Y translation.
3 Z translation.
4 X rotation.
5 Y rotation.
6 Z rotation.
p2i
Label number of the second geometry point at the opposite end of the spring element from
point “p1i”. Input of p2i = 0 implies that the degree of freedom “dof1i” at point “p1i” is
connected to ground.
dof2i
The degree of freedom for the spring element at point “p2i”. The choice of input values is the
same as for entry “dof1i”. If p2i = 0, then input for dof2i is ignored.
pseti [1]
Label number of the spring property set for element springi. See PROPERTYSET.
printi [DEFAULT]
Printing flag for the element. If DEFAULT is specified, printout is controlled by PRINTOUT
PRINTDEFAULT. {YES/NO/DEFAULT}

yarrort

savei [DEFAULT]
Saving (to the porthole file) flag for the element. If DEFAULT is specified, saving is controlled
by PORTHOLE SAVEDEFAULT. {YES/NO/DEFAULT}
axi, ayi, azi [0.0]
Global coordinate system components of the spring element direction, used if the spring
connects two coincident points, or one point to ground. Note that this vector is only used for
nonlinear spring elements.
tbirthi [0.0]
Element birth time.
tdeathi [0.0]
Element death time.
Note: tbirthi < tdeathi, or tbirthi = tdeathi = 0.0
Auxiliary commands
LIST SPRING POINTS FIRST LAST
DELETE SPRING POINTS FIRST LAST

yarrort

SPRING LINES
namei line1i dof1i line2i dof2i pseti printi savei axi ayi  azi tbirthi tdeathi option
Defines &#147;spring-lines&#148;, i.e. a set of spring elements either between two degrees of freedom
along distinct geometry lines, or a &#147;grounded&#148; degree of freedom along a single geometry
line.
namei
Label number of a spring-line.
line1i
Label number of the first (or only) geometry line at one end of the spring-line.
dof1i
The degree of freedom selected for the spring elements along the first line &#147;line1i&#148;.
1 X translation.
2 Y translation.
3 Z translation.
4 X rotation.
5 Y rotation.
6 Z rotation.
line2i
Label number of the second geometry line at the opposite end of the spring-line from &#147;line1i&#148;.
Input of line2i = 0 implies that the degree of freedom &#147;dof1i&#148; at line &#147;line1i&#148; is connected to
ground.
dof2i
The degree of freedom selected for the spring elements along the second line &#147;line2i&#148;.
If line2i = 0, then input for dof2i is ignored.
pseti [1]
Label number of the spring property set for spring-line &#147;namei&#148;. See PROPERTYSET.
printi [DEFAULT]
Printing flag for the element. If DEFAULT is specified, printout is controlled by PRINTOUT
PRINTDEFAULT. {YES/NO/DEFAULT}
savei [DEFAULT]
Saving (to the porthole file) flag for the element. If DEFAULT is specified, saving is controlled
by PORTHOLE SAVEDEFAULT. {YES/NO/DEFAULT}
axi, ayi, azi [0.0]
Global coordinate system components of the spring-line direction, used if the spring-line
connects two coincident nodes, or one node to ground.
tbirthi [0.0]
Element birth time.
tdeathi [0.0]
Element death time.
Note: tbirthi < tdeathi, or tbirthi = tdeathi = 0.0
option [SAME]
{SAME / REVERSE}
When multiple nodes exist on the line1 and line2, this flags how the truss element between
nodes on each entity is defined.
SAME - A spring is constructed between nodes at the corresponding parametric
order on each line. Parametric order is in the increasing u-parameter
direction for lines.
REVERSE - A spring is constructed between nodes at the corresponding parametric
order on each line, but for line2 the parametric order is reversed.
Auxiliary commands
LIST SPRING LINES FIRST LAST
DELETE SPRING LINES FIRST LAST

ncutefly

支持，很有必要啊