]nd_pos( np, p, dof )和nd_rfob( np, s, dof )的意义

涛声依旧2015

手册中的解释：
nd_pos( np, p, dof )
position p (p ∈ {1,2} denotes current or reference position, respectively; dof-component, dof ∈ {1,2,3}). The reference position is the configuration for which stiffness matrices have been formed and does not change during a small-strain analysis. The current position is updated after each timestep. During a large-strain analysis, the reference position is set equal to the current position during each large-strain update.

nd_rfob( np, s, dof )
generalized out-of-balance force expressed in the s system (s ∈ {1,2} denotes global or node-local system, respectively; dof-component, dof ∈ {1,2,. . .,6})

我想知道：np、p、s、dof这三个参数分别代表的意义~~~

高手请指教。。。。谢谢~~~~~~

quzhengdehao

dof=自由度？

dongxx0221

np，节点指针。
p=1，小变形或大变形更新前节点坐标；p=2,大变形更新后的节点坐标。
s=1,全局坐标；s=2，局部坐标系坐标。
dof意义不明

pinshing

dof 从使用理解，像是1，2，3分别代表了x,y,z向