×section-beam中的参数scoor有人理解吗。

wdldxy

Location of triad for tracking the rotation of the discrete beam element,
see the parameter CID below. The force and moment resultants in the
output databases are referenced to this triad. The flags -3.0, -1.0, 0.0,
1.0, and 3.0 are inactive if the option to update the local system is active
in the CID definition.
EQ.-3.0: beam node 1, the angular velocity of node 1 rotates triad,
EQ.-2.0: beam node 1, the angular velocity of node 1 rotates triad
but the r-axis is adjusted to lie along the line between the two beam
nodal points. This option is not recommended for zero length
discrete beams.,
EQ.-1.0: beam node 1, the angular velocity of node 1 rotates triad,
EQ. 0.0: centered between beam nodes 1 and 2, the average
angular velocity of nodes 1 and 2 is used to rotate the triad,
EQ.+1.0: beam node 2, the angular velocity of node 2 rotates triad.
EQ.+2.0: beam node 2, the angular velocity of node 2 rotates triad.
but the r-axis is adjusted to lie along the line between the two beam
nodal points. This option is not recommended for zero length
discrete beams.
EQ.+3.0: beam node 2, the angular velocity of node 2 rotates triad.

wdldxy

triad 也不知道什么意思啊

vvzzll

梁单元的单元局部坐标点及方向的选项。
建议：非零长度梁单元用绝对值大于1，零长度梁单元绝对值0，1

cj2006n

什么原理呢？

925347002

建议非常正确，可原理为何？能否解释