水下井口局部有限元分析模型报错及警告问题求解？

用ABAQUS进行分析时，总是算了一下就出错，看了一下warning和Error主要是这些问题，求问怎么解决？

1.5624 nodes have dof on which incorrect boundary conditions may have been specified. The nodes have been identified in node set WarnNodeBCIncorrectDof.

2.OVERCONSTRAINT CHECKS: THERE ARE 16926 BOUNDARY CONDITIONS SPECIFIED IN THIS MODEL. OVERCONSTRAINT CHECKS FOR BOUNDARY CONDITIONS SPECIFIED ON SLAVE NODES OF RIGID BODIES, OF *TIE OPTIONS, OR OF *COUPLING OPTIONS REQUIRE 7 Mb OF MEMORY. IF THIS IS A PROBLEM, PLEASE TURN OFF OVERCONSTRAINT CHECKS USING *CONSTRAINT CONTROLS, NO CHECKS or INCREASE THE MEMORY USED BY THE PRE-PROCESSOR.

3.MPCS (EXTERNAL or INTERNAL, including those generated from rigid body definitions), KINEMATIC COUPLINGS, AND/OR EQUATIONS WILL ACTIVATE ADDITIONAL DEGREES OF FREEDOM

4.26753 nodes are either missing intersection with their respective master surface or are outside the adjust zone. The nodes have been identified in node set WarnNodeMissMasterIntersect.

5.Slave node 290 instance conducor-1 will not be tied to the master surface assembly_cement-out_cns_. The distance from the master surface is greater than the position tolerance value.

6.SLAVE NODE 4804 INSTANCE LW-1 WILL NOT BE TIED TO THE MASTER SURFACE ASSEMBLY_con top_CNS_. THE DISTANCE FROM THE MASTER SURFACE IS GREATER THAN THE POSITION TOLERANCE VALUE.

7.*tie between surface pair (assembly_conductor-cement_cns_,assembly_cement-out_cns_) may result in unrealistic deformation between the surfaces or large stresses because the master is node-based and no adjustment is specified. Define a surface-based master surface or adjust=yes to avoid this problem.

谢谢