关于patran划分网格的问题

看样子是约束问题，你可以将.bdf上传，让大家看看吗？

以上是f06文件的一部分，还请各位高手帮忙！

*** SYSTEM INFORMATION MESSAGE 6916 (DFMSYN)
　　DECOMP ORDERING METHOD CHOSEN: BEND, ORDERING METHOD USED: BEND

*** USER INFORMATION MESSAGE 4158 (DFMSA)
---- STATISTICS FOR SPARSE DECOMPOSITION OF DATA BLOCK KLL FOLLOW
　　NUMBER OF NEGATIVE TERMS ON FACTOR DIAGONAL = 0
　　MAXIMUM RATIO OF MATRIX DIAGONAL TO FACTOR DIAGONAL = 2.0E+15 AT ROW NUMBER 924
*** USER WARNING MESSAGE 4698 (DCMPD)
　　STATISTICS FOR DECOMPOSITION OF MATRIX KLL .
　　THE FOLLOWING DEGREES OF FREEDOM HAVE FACTOR DIAGONAL RATIOS GREATER THAN
　　1.00000E+07 OR HAVE NEGATIVE TERMS ON THE FACTOR DIAGONAL.
　　USER INFORMATION:
　　THIS MESSAGE MAY BE IGNORED IF NO GRID POINT IDS OR HIGH RATIO MESSAGES APPEAR IN THE TABLE ON THE NEXT PAGE.
1 MSC.NASTRAN JOB CREATED ON 20-NOV-06 AT 15:15:29 NOVEMBER 21, 2006 MSC.NASTRAN 9/23/04 PAGE 37
　　
0 SUBCASE 1
0
　　GRID POINT ID DEGREE OF FREEDOM MATRIX/FACTOR DIAGONAL RATIO MATRIX DIAGONAL
　　
　　337 T3 1.95783E+15 6.10981E+04
^^^
^^^ USER FATAL MESSAGE 9050 (SEKRRS)
^^^ RUN TERMINATED DUE TO EXCESSIVE PIVOT RATIOS IN MATRIX KLL.
^^^ USER ACTION: CONSTRAIN MECHANISMS WITH SPCI OR SUPORTI ENTRIES OR SPECIFY PARAM,BAILOUT,-1 TO
　　CONTINUE THE RUN WITH MECHANISMS.
1 MSC.NASTRAN JOB CREATED ON 20-NOV-06 AT 15:15:29 NOVEMBER 21, 2006 MSC.NASTRAN 9/23/04 PAGE 38
　　
0 SUBCASE 1
* * * * D B D I C T P R I N T * * * * SUBDMAP = PRTSUM , DMAP STATEMENT NO. 30



0 * * * * A N A L Y S I S S U M M A R Y T A B L E * * * *
0 SEID PEID PROJ VERS APRCH SEMG SEMR SEKR SELG SELR MODES DYNRED SOLLIN PVALID SOLNL LOOPID DESIGN CYCLE SENSITIVITY
--------------------------------------------------------------------------------------------------------------------------
　　0 0 1 1 ’ ’ T F T T T F F F 0 F -1 0 F
0SEID = SUPERELEMENT ID.
PEID = PRIMARY SUPERELEMENT ID OF IMAGE SUPERELEMENT.
PROJ = PROJECT ID NUMBER.
VERS = VERSION ID.
APRCH = BLANK FOR STRUCTURAL ANALYSIS. HEAT FOR HEAT TRANSFER ANALYSIS.
SEMG = STIFFNESS AND MASS MATRIX GENERATION STEP.
SEMR = MASS MATRIX REDUCTION STEP (INCLUDES EIGENVALUE SOLUTION FOR MODES).
SEKR = STIFFNESS MATRIX REDUCTION STEP.
SELG = LOAD MATRIX GENERATION STEP.
SELR = LOAD MATRIX REDUCTION STEP.
MODES = T (TRUE) IF NORMAL MODES OR BUCKLING MODES CALCULATED.
DYNRED = T (TRUE) MEANS GENERALIZED DYNAMIC AND/OR COMPONENT MODE REDUCTION PERFORMED.
SOLLIN = T (TRUE) IF LINEAR SOLUTION EXISTS IN DATABASE.
PVALID = P-DISTRIBUTION ID OF P-VALUE FOR P-ELEMENTS
LOOPID = THE LAST LOOPID VALUE USED IN THE NONLINEAR ANALYSIS. USEFUL FOR RESTARTS.
SOLNL = T (TRUE) IF NONLINEAR SOLUTION EXISTS IN DATABASE.
DESIGN CYCLE = THE LAST DESIGN CYCLE (ONLY VALID IN OPTIMIZATION).
SENSITIVITY = SENSITIVITY MATRIX GENERATION FLAG.

No PARAM values were set in the Control File.