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发表于 2010-5-23 16:28:44
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来自 北京
本帖最后由 luyong85 于 2010-5-23 16:41 编辑
4# luyong85
INP太大了,这回希望渺茫了,只有如此错误提示:
***WARNING: THE SYSTEM MATRIX HAS 1 NEGATIVE EIGENVALUES.
IN AN EIGENVALUE EXTRACTION STEP THE NUMBER OF NEGATIVE EIGENVALUES IS
EQUAL TO THE NUMBER OF EIGENVALUES BELOW THE CURRENT SHIFT POINT.
THIS MAY BE USED TO CHECK THAT EIGENVALUES HAVE NOT BEEN MISSED.
NOTE: THE LANCZOS EIGENSOLVER APPLIES AN INTERNAL SHIFT WHICH WILL
RESULT IN NEGATIVE EIGENVALUES.
IN A DIRECT-SOLUTION STEADY-STATE DYNAMIC ANALYSIS, NEGATIVE
EIGENVALUES ARE EXPECTED. A STATIC ANALYSIS CAN BE USED TO VERIFY THAT THE SYSTEM IS STABLE.
IN OTHER CASES, NEGATIVE EIGENVALUES MEAN THAT THE SYSTEM MATRIX IS NOT
POSITIVE DEFINITE:
FOR EXAMPLE, A BIFURCATION (BUCKLING) LOAD MAY HAVE BEEN EXCEEDED.
NEGATIVE EIGENVALUES MAY ALSO OCCUR IF QUADRATIC ELEMENTS ARE
USED TO DEFINE CONTACT SURFACES.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.1 IS OVERCLOSED BY 9.52480 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.4 IS OVERCLOSED BY 9.56749 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.5 IS OVERCLOSED BY 9.83563 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.143 IS OVERCLOSED BY 9.59188 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.144 IS OVERCLOSED BY 9.65159 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.145 IS OVERCLOSED BY 9.71390 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.146 IS OVERCLOSED BY 9.77242 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.147 IS OVERCLOSED BY 9.82332 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.148 IS OVERCLOSED BY 9.85755 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.149 IS OVERCLOSED BY 9.86097 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.150 IS OVERCLOSED BY 9.78978 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.151 IS OVERCLOSED BY 9.74493 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.152 IS OVERCLOSED BY 9.70111 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE
RAIL-1.153 IS OVERCLOSED BY 9.66202 WHICH IS TOO SEVERE.
CONTACT PAIR (ASSEMBLY_SURF-RAIL_LEFT,ASSEMBLY_SURF-WHEEL_CONTACT_LEFT) NODE |
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