我在做模拟轧制时,只能运行一段时间,然后ansys提示出错,退出了程序,出错内容如下:
The LS-DYNA time step size should not exceed 0.340E-03
to avoid contact instabilities. If the step size is
bigger then scale the penalty of the offending surface.
0 t 0.0000E+00 dt 0.00E+00 flush i/o buffers
1 t 0.0000E+00 dt 1.46E-04 flush i/o buffers
1 t 0.0000E+00 dt 1.46E-04 write ANSYS result file
1370 t 1.9986E-01 dt 1.46E-04 write ANSYS result file
2740 t 3.9986E-01 dt 1.46E-04 write ANSYS result file
4110 t 5.9986E-01 dt 1.46E-04 write ANSYS result file
5000 t 7.2975E-01 dt 1.46E-04 flush i/o buffers
5494 t 7.9992E-01 dt 1.22E-04 write ANSYS result file
negative volume in brick element # 9147 cycle= 7396
7396 t 9.1700E-01 dt 1.00E+06 write ANSYS result file
E r r o r t e r m i n a t i o n
Storage required for explicit solution: 5434781
T i m i n g i n f o r m a t i o n
CPU(seconds) %CPU Clock(seconds) %Clock
----------------------------------------------------------------
Initialization ....... 1.9000E+01 1.19 1.9328E+01 1.21
Element processing ... 1.0910E+03 68.40 1.1202E+03 70.21
Binary databases ..... 4.7000E+01 2.95 4.5847E+01 2.87
ASCII database ....... 0.0000E+00 0.00 7.0000E-02 0.00
Contact algorithm .... 2.4500E+02 15.36 2.2775E+02 14.27
Contact entities ..... 0.0000E+00 0.00 0.0000E+00 0.00
Rigid bodies ......... 1.9300E+02 12.10 1.8234E+02 11.43
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 1.5950E+03 100.00 1.5955E+03 100.00
Problem time = 9.1700E-01
Problem cycle = 7396
Total CPU time = 1595 seconds ( 0 hours 26 minutes 35 seconds)
CPU time per zone cycle = 5503 nanoseconds
Clock time per zone cycle= 5504 nanoseconds
Number of CPU's 1
Start time 11/03/2003 10:36:10
End time 11/03/2003 11:03:01
Elapsed time 1611 seconds ( 0 hours 26 minutes 51 seconds)