急求：活塞销出现的问题

aaalwp2010

***ERROR: in keyword *BOUNDARY, file "Job-1.inp", line 118519: Unknown
           assembly node set _PICKEDSET26
***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO
          INTERPRET SOME DATA.  SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION
***ERROR: in keyword *NODEOUTPUT, file "Job-1.inp", line 118567: Unknown
           assembly set FIXED-FACE-OUTPUT
***ERROR: in keyword *BOUNDARY, file "Job-1.inp", line 118587: Unknown
           assembly node set _PICKEDSET26
***ERROR: in keyword *NODEOUTPUT, file "Job-1.inp", line 118619: Unknown
           assembly set FIXED-FACE-OUTPUT
求解答谢谢

yang240

检查你的模型中边界设置是否有问题，输出设置也检查，是不是有的节点集建好模后又删了？