[急切求助]请教一下前辈，在边坡进行时程分析时出现警告时什么原因？ [复制链接]

SUBSPACE ITERATION NUMBER =   1
WARNING : NODE NO.   1455  DY  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.      5786
WARNING : NODE NO.   1455  DZ  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.      5787
WARNING : NODE NO.  20147  DZ  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.     29607
WARNING : NODE NO.  20147  DY  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.     29606
WARNING : NODE NO.  20147  DX  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.     29605
WARNING : NODE NO.  16961  DX  DOF MAY BE SINGULAR.
WARNING : EQUATION NO.     20047


WARNING : SINGULARITY WAS FOUND IN REDUCED MASS MATRIX




WARNING : SINGULARITY WAS FOUND IN REDUCED MASS MATRIX




WARNING : SINGULARITY WAS FOUND IN REDUCED MASS MATRIX