flac3d动力分析时基岩位移也很大是什么原因？边界条件、参数还是其他原因？求指教

我的就是加载了附加应力的作用 但是出现了一米多的位移 正常也就十几毫米，网格划分已经很小了

楼主，你好，我有个列车动力计算的命令流计算，最后会报错，overflow error in calculation!想请教这是什么原因呢
下面附上命令流
谢谢！

new
res kaiwa.sav
config dy ;???????????????????????????????????????|??????????????????????????|?????????????|????????????????????????????????????????????????
set dyn on
;free x y z range z -0.1 0.1
free x y z range x 29.9 30.1 ;shifangdibianyuesu
free x y z range x -70.1 -69.9 ;shifangdibianyuesu
free x y z range y -0.1 0.1 ;shifangdibianyuesu
free x y z range y 79.9 80.1 ;shifangdibianyuesu
;apply nquiet squiet dquiet range z -0.1 0.1
apply nquiet squiet dquiet range x 29.9 30.1
apply nquiet squiet dquiet range x -70.1 -69.9
apply nquiet squiet dquiet range y -0.1 0.1
apply nquiet squiet dquiet range y 79.9 80.1
;apply ff
set dyn damp rayleigh 0.4 7.9394 mass
his dytime
def trainmoveyz
loop i(1,80)
j=i
global dx=0.00
global dy=1.0
x_x=0.00+j*dx
x_a=x_x+0.1
x_b=x_x-0.1
y_y=0.00+j*dy
y_a=y_y+0.1
y_b=y_y-0.1
forcename='80kmhload'+string(i)+'.txt'
command
table @贴吧用户_00000D1 read @forcename
apply zforce=-0.325 his table @i ran x @x_a @x_b y @y_a @Y_B z 18.73 18.93
endcommand
endloop
end
@trainmoveyz
set dyn time=0
set dyn multi on
set dyn dt 0.00007 ;????¤§???è°????????°?è????????é?′
def movesolve1
loop i(1,2)
cc=i
filename='wenjian'+string(i)+'.sav'
command
solve age @i
endcommand
if i=2 then
command
save @filename
endcommand
endif
endloop
end
@movesolve1
his nstep 30
;40kmh 18s,60kmh 12s,80kmh 9s
def movesolve
loop i(2,9)
cc=i
filename='wenjian'+string(i)+'.sav'
command
solve age @cc
save @filename
endcommand
endloop
end
@movesolve

楼主请问解决了吗，最近也遇到了

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