我在建模的时候，模型的外围是一个长方体，内部是一个圆柱体。我先给提用solid 95划分了单元，然后在圆柱体的面上划分了shell93的单元，然后出现了问题 *** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1196 on element 4141 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1203 on element 4141 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1197 on element 4141 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1190 on element 4141 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 343 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 349 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 350 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 344 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1183 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1190 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1184 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1177 on element 4142 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 337 on element 4143 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 343 on element 4143 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 344 on element 4143 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 338 on element 4143 is unselected.
*** WARNING *** SUPPRESSED MESSAGE CP = 5.984 TIME= 17:37:02
Node 1170 on element 4143 is unselected.
这是为什么啊？怎么改正啊
