锻锤模拟问题 求教

Step number is -1
Convergence Criteria for Iterative Solver
V-norm = 5.00E-03 F-norm = 5.00E-02
STEP NUMBER = 1

Eqs. New Profile Ave. Bandwidth
15620 402570 50
DIRECT METHOD
ITERATION VELOCITY RELATIVE VELOCITY RELATIVE FORCE SOLVING TIME
NUMBER NORM ERROR NORM ERROR NORM (SEC)
1 0.6795348578E+04 NaN 0.1465602575E+06 0.438
Abnormal stop at BLKDIA : Node number = 3 1
Please report it to SFTC.
NaN

我在模拟时候老是遇到这问题 为什们呢？？？我应该怎么弄呢？？？我是用锻锤模拟的？？？