求助:随机响应分析报错

太谢谢了:-D

看一下一下语句：
$
PBUSH,2,K,7.4,11.4,18.8,4.63,3.24 $Generalized Spring-and-Damper Property
B,0,0,52.64
PBUSH,3,K,7.4,11.4,18.59,11.11,19.70 $Generalized Spring-and-Damper Property
B,0,0,52.64

两个以 B 开头 (不计空格) 的语句本应是上一句的续行，但是由于你在上一句后面加了注解，因而这两个 B 开头的语句被当作新的卡片 (不再认为是续行)，B 被当作关键字，从而造成前面的出错信息。
此外，这两个 B 开头的语句好像前面应该有 "+, ,"，以表示它是续行，且按照 PBUSH 卡的格式，续行中的 B 应该位于第三个域中。

我的QQ是83470375

谢谢上面两位高手指导,不过有点笨,没有完全理解你们的意思,还是找不出问题,不知道怎么改,我把整个BULK部分都放上来了,如果方便请您继续指点一下吧,再次向您表示感谢!我的QQ:83470375
BEGIN BULK
$------1-------2-------3-------4-------5-------6-------7-------8-------9-------0
PARAM,COUPMASS,1
PARAM,WTMASS,0.00259
INCLUDE 'exhaust.bdf'
$
$-------------------------------------------------------------------------------
$Generalized Spring-and-Damper Connection
$-------------------------------------------------------------------------------
$
CBUSH,1,2,577297,609968
CBUSH,2,2,563931,609969
CBUSH,3,2,564742,609970
CBUSH,4,3,605831,609971
CBUSH,5,3,607639,609972
CBUSH,6,3,604380,609973
$
PBUSH,2,K,7.4,11.4,18.8,4.63,3.24 $Generalized Spring-and-Damper Property
B,0,0,52.64
PBUSH,3,K,7.4,11.4,18.59,11.11,19.70 $Generalized Spring-and-Damper Property
B,0,0,52.64

$--------------------------------------------------------------------------------
$--------------------------------------------------------------------------------
EIGRL,1,0.0,200.0 $Real Eigenvalue Extraction Data, Lanczos Method
TABDMP1,100,CRIT,
+,0.,.03,200.,.03,ENDT $Modal Damping Table
$
$--------------------------------------------------------------------------------
$ APPLY UNIT FORCE
$--------------------------------------------------------------------------------
RLOAD2, 100, 600, , ,310
DAREA, 600,609968,3,1.0,609969,3,1.0
DAREA, 600,609970,3,1.0,609971,3,1.0
DAREA, 600,609972,3,1.0,609973,3,1.0
TABLED1, 310,
,0., 1., 1000., 1., ENDT
$--------------------------------------------------------------------------------
$SPECIFY FREQUENCY STEPS
$--------------------------------------------------------------------------------
FREQ,100,0.1517,0.3033,0.6066,1.2153,2.4306,4.8611,9.7222,
,19.4444,38.8888,77.7776
$--------------------------------------------------------------------------------
$SPECIFY SPECTRAL DENSITY
$--------------------------------------------------------------------------------
RANDPS,100,1,1,1.,0.,200
TABRND1,200,LOG,LOG,
,0.1517, 2157., 0.3033, 539., 0.6066, 135., 1.2153, 33.71,
,2.4306,8.4240,4.8611, 2.1034, 9.7222, 0.5266, 19.4444, 0.1317,
,38.8888,0.0329,77.7776,0.0082,ENDT
$
ENDDATA

问题应该出在 INCLUDE 'exhaust.bdf' 所引用的数据文件中，其中会有一个以 "B" 作为关键字的卡片。

很显然bulk里有错误，nastran提示有个字符B作为卡片了。

:D 帮你顶一下~~