大家好，我用dyna建模，第一步就出现这个问题，有没有大神帮忙解答一一下，我初学此软件，纠结了很长时间了
*** Error 40509 (SOL+509)
negative volume in solid element # 494 cycle 1
*** Error 40509 (SOL+509)
negative volume in solid element # 495 cycle 1
*** Error 40509 (SOL+509)
negative volume in solid element # 512 cycle 1
1 t 9.0000E-01 dt 9.00E-01 write d3plot file 11/17/13 10:35:01
*** Error 40500 (SOL+500)
node # 1 has out-of-range velocities
x-velocity= NaN
y-velocity= NaN
z-velocity= NaN
