请问一下这些error是怎么回事啊？

zixuanxue

*** WARNING # 1848
Topology optimization without minimum member size control activated.
Using DTPL card or DOPTPRM,MINDIM is recommended.
  
*** INFORMATION # 815
The total number of rigid elements, whose rotational dependent d.o.f.
are removed because there is no need to constrain those d.o.f., is 63.
  
NOTE # 1852
AUTOMATIC SCREENING is activated.
Use DSCREEN,AUTO,OFF to disable automatic screening.
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =      876
  component =        1
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =      876
  component =        2
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =      876
  component =        3
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =     2441
  component =        1
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =     2441
  component =        2
  
*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
    GRID ID =     2441
  component =        3

zixuanxue

这个是rbe2出来问题，已解决，谢谢大家