Error termination

求解：
node # 30 has out-of-range velocities
x-velocity= NaN
y-velocity= NaN
z-velocity= NaN
65000 t 9.0745E-02 dt 0.00E+00 write d3plot file
65000 t 9.0745E-02 dt 0.00E+00 write ANSYS result file
Error termination
Memory required for explicit solution : 77289267
Additional dynamically allocated memory: 1834466
Total: 79123733
T i m i n g i n f o r m a t i o n
CPU(seconds) %CPU Clock(seconds) %Clock
----------------------------------------------------------------
Initialization ....... 9.5000E+01 0.25 9.5390E+01 0.25
Element processing ... 3.7360E+03 9.88 3.6837E+03 9.74
Binary databases ..... 4.3500E+02 1.15 4.3667E+02 1.16
ASCII database ....... 2.0000E+00 0.01 2.1100E+00 0.01
Contact algorithm .... 3.1234E+04 82.62 3.1306E+04 82.81
Contact entities ..... 0.0000E+00 0.00 0.0000E+00 0.00
Rigid bodies ......... 2.3030E+03 6.09 2.2825E+03 6.04
Implicit Nonlinear ... 0.0000E+00 0.00 0.0000E+00 0.00
Implicit Lin. Alg. ... 0.0000E+00 0.00 0.0000E+00 0.00
----------------------------------------------------------------
T o t a l s 3.7805E+04 100.00 3.7806E+04 100.00
Problem time = 9.0745E-02
Problem cycle = 65000
Total CPU time = 37805 seconds ( 10 hours 30 minutes 5 seconds)
CPU time per zone cycle = 1344 nanoseconds
Clock time per zone cycle= 1344 nanoseconds
Number of CPU's 1
NLQ used/max 96/ 96
Start time 05/18/2007 00:49:08
End time 05/18/2007 11:20:16
Elapsed time 37868 seconds ( 10 hours 31 minutes 8 seconds)
E r r o r t e r m i n a t i o n