[50分，谢谢]一个复杂桨叶求模态的问题，具体见帖子

我已经用catia建立了一个模型，图形大致如下，我现在用的自由网格建的模型，对各个零件如图中所示的材料是不一样的
，最左端约訴，进行模态分析时，总是出现如下错误，不知该如何改正，忘高人指点，谢谢。 作分析时出现以下错误，不知道是怎么回事，第一个是不是连接点有问题，第二个是不是建模有问题呀，谢谢。祈求高人指点。具体错误见附件，不知道应该怎么改呀。

*** USER FATAL MESSAGE 4654 (ETETGD)
ELEMENT WITH ID = 11163
CONNECTS TWO POINTS HAVING THE SAME COORDINATES.
CONNECTION ORDER OF GRID POINTS IN QUESTION = 6 AND 8
TETRA 11177 0.15 0.03 4.71 0.71*++++ 0.00 FAIL 0.00 ++++
TETRA 11264 0.12 0.03 3.86 0.82*++++ 0.00 FAIL 0.00 ++++
TETRA 11306 0.15 0.02 7.02 0.82*++++ 0.00 FAIL 0.00 ++++
1 MSC.NASTRAN JOB CREATED ON 02-MAY-07 AT 20:56:46 MAY 2, 2007 MSC.NASTRAN 9/23/04 PAGE 18

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E L E M E N T G E O M E T R Y T E S T R E S U L T S S U M M A R Y
TOTAL NUMBER OF TIMES TOLERANCES WERE EXCEEDED
ASPECT/ MINIMUM MAXIMUM SURFACE/FACE EDGE POINT JACOBIAN
ELEMENT TYPE SKEW ANGLE TAPER RATIO INTER. ANGLE INTER. ANGLE WARP FACTOR OFFSET RATIO LENGTH RATIO DETERMINANT
TETRA N/A 9 N/A N/A N/A N/A 5247 1103

N/A IN THE ABOVE TABLE INDICATES TESTS THAT ARE NOT APPLICABLE TO THE ELEMENT TYPE AND WERE NOT PERFORMED.
FOR ALL ELEMENTS WHERE GEOMETRY TEST RESULTS HAVE EXCEEDED TOLERANCES,

TETRA ELEMENT ID 3569 PRODUCED LARGEST ASPECT RATIO OF 6149.15 (TOLERANCE = 100.00).
TETRA ELEMENT ID 6331 PRODUCED SMALLEST EDGE COS(ANGLE) OF 0.31 (TOLERANCE = 0.87).
TETRA ELEMENT ID 11306 PRODUCED SMALLEST DET(JACOBIAN) OF 0.00 (TOLERANCE = 0.00).
TETRA ELEMENT ID 8320 PRODUCED SMALLEST VERTEX DET(JAC) -UWM 6828- OF 0.00 (TOLERANCE = 0.00).
1 MSC.NASTRAN JOB CREATED ON 02-MAY-07 AT 20:56:46 MAY 2, 2007 MSC.NASTRAN 9/23/04 PAGE 19

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*** USER FATAL MESSAGE 7555 (EMGPRO)
EMG MODULE TERMINATING DUE TO SEVERE FAILURE OF ELEMENT GEOMETRY CHECK TESTS. THE ELEMENT TYPES, ELEMENT IDS AND FAILING
TESTS ARE IDENTIFIED ON PREVIOUS PAGES WITH THE FLAG "FAIL" PLACED AFTER THE VALUE METRIC OF THE TEST THAT FAILED.
^^^ USER WARNING MESSAGE 9031 (ERRPH1)
^^^ NOGO ENCOUNTERED IN SUBDMAP SEMG
1 MSC.NASTRAN JOB CREATED ON 02-MAY-07 AT 20:56:46 MAY 2, 2007 MSC.NASTRAN 9/23/04 PAGE 20

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* * * * D B D I C T P R I N T * * * * SUBDMAP = PRTSUM , DMAP STATEMENT NO. 30





第二个例子：
*** USER FATAL MESSAGE 7555 (EMGPRO)
EMG MODULE TERMINATING DUE TO SEVERE FAILURE OF ELEMENT GEOMETRY CHECK TESTS. THE ELEMENT TYPES, ELEMENT IDS AND FAILING
TESTS ARE IDENTIFIED ON PREVIOUS PAGES WITH THE FLAG "FAIL" PLACED AFTER THE VALUE METRIC OF THE TEST THAT FAILED.
^^^ USER WARNING MESSAGE 9031 (ERRPH1)
^^^ NOGO ENCOUNTERED IN SUBDMAP SEMG
1 MSC.NASTRAN JOB CREATED ON 05-MAY-07 AT 16:21:54 MAY 5, 2007 MSC.NASTRAN 9/23/04 PAGE 10