求指导，关于Tie,The distance from the master surface is greater than.....
遇见了下面的问题，苦思冥想了好久也没有解决。ABAQUS 绑定约束 出现以下问题：
Slave surface assembly_set-2_cns_ is a node-based surface used with surface to surface approach. In order to obtain improved stress accuracy with this approach, an element-based surface should be used instead.
For *tie pair (assembly_set-2_cns_-assembly_set-1_cns_), adjustment was specified but no node was adjusted more than the adjustment distance = 2.22000e-16.
Slave node 3 instance part-1-1 will not be tied to the master surface assembly_set-1_cns_. The distance from the master surface is greater than the position tolerance value.
Slave node 4 instance part-1-1 will not be tied to the master surface assembly_set-1_cns_. The distance from the master surface is greater than the position tolerance value.
Slave node 6 instance part-1-1 will not be tied to the master surface assembly_set-1_cns_. The distance from the master surface is greater than the position tolerance value.
。。。。。。。。。。。。。。。还有很多行类似的warning。ps:图文无关，图不重要，看字
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下面说正题
tie的意思是把主从面上的所有点绑在一起，限制所有的自由度
为了保证从分析开始tie就开始作用，于是有个关键字*adjust
在分析初期，所有在adjust范围内的点将会被赋予tie约束
看看帮助文档，有图有真相
所以你的问题是，adjust值给的太小了，从面上的点不能在有效距离中找到主面
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