ABAQUS msg文件里全是这些是什么原因？

 max. penetration error 35.2349e-12  at node con-1.3486 of contact pair

   (assembly_s_surf-176,assembly_m_surf-176)

   max. contact force error -26.2825      at node con-1.9472 of contact pair

   (assembly_s_surf-181,assembly_m_surf-181)

          the estimated contact force error is outside of convergence tolerances.

 

 average force                       5.40       time avg. force        3.04    

 largest residual force              24.1       at node       5688   dof  1

   instance: con-1                                                                           

 largest increment of disp.        -1.479e-06   at node         23   dof  1

   instance: stud-1-lin-1-3                                                                  

 largest correction to disp.        9.011e-07   at node         23   dof  1

   instance: stud-1-lin-1-2                                                                  

          force     equilibrium not achieved within tolerance.