我的模型运行时出现了如下错误,望各位给予解答,谢谢!
ENTRY ASSM_STIFF_LOAD ( FORM GLOBAL EQUILIBRIUM EQUATIONS IN BLOCKS )
ENTRY STATIC ANALYSIS FOR NONLINEAR. ITERATION NO. : 1
MULTI-FRONTAL SOLUTION HAS BEEN PERFORMED 90 % .
WARNING : NODE NO. 60 RY DOF MAY BE SINGULAR.
WARNING : EQUATION NO. 359
WARNING : NODE NO. 60 RZ DOF MAY BE SINGULAR.
WARNING : EQUATION NO. 360
WARNING : NODE NO. 77 RX DOF MAY BE SINGULAR.
WARNING : EQUATION NO. 460
WARNING : NODE NO. 77 DZ DOF MAY BE SINGULAR.
WARNING : EQUATION NO. 459
WARNING : NODE NO. 77 DY DOF MAY BE SINGULAR.
WARNING : EQUATION NO. 458
WARNING : NODE NO. 77 DX DOF MAY BE SINGULAR.
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