beam4单元怎么加温度荷载，高手进来
/filename,wangqiaofenxi/title,analysis of wangqiao
/prep7
!!!!!!!!!!!!!!!!!!!!!!材料属性和尺寸
et,1,beam4
r,1,1382e-3,2093500e-12,2093500e-12,114e-3,114e-3,,
rmore,,4187000e-12,,,,,
mp,dens,1,7.85e3
mp,ex,1,2.06e11
mp,nuxy,1,0.3
mp,alpx,1,1.2e-5 !定义温度膨胀系数
mp,reft,20 !初始温度
tb,bkin,1,1,2,1 !非线性材料模型- 与温度相关的双线性各向同性模型
tbdata,,345e6,0.0 !屈服应力和切线模量
模型（省略）！！！！！！！！！！！
!!!!!!!!!!!!!!!!!!!!!!!!!静力分析
/sol
antype,static !分析类型
acel,0,0,9.8 !考虑重力
!施加温度荷载
pstres,on !打开预应力
esel,s,,,1,306,1 !选择单元
bfe,all,temp,1,0 !温差-最后这个数
allsel all !选择全部单元!!!重要!
solve
finish
!!!!!!!!!!!!!!!!!!!!!!!!!模态分析
/sol
AnType,Modal
pstres,on!打开预应力
Modopt,LANB,10
MXPAND,10
SOLVE
FINISH
结果提示： *** WARNING *** CP = 43.172 TIME= 19:25:37
The program chosen initial timestep/load-factor is arbitrary.It is
necessary for the user to supply a suitable initial
timestep/load-factor through the NSUB or DELTIM command for
convergence and overall efficiency.
[ 本帖最后由 luyunjun023 于 2009-5-3 19:33 编辑 ] 高手高手能你快来 高手，你在哪里
急！！！
换成beam4单元也是这样的结果 initial timestep/load-factor through the NSUB or DELTIM command
设置迭代子步数或者时间间隔就可以了。
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