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本帖最后由 wq1627 于 2011-7-15 13:23 编辑
有一个问题是关于单元生死,在加载热流的同时,希望在表面温度到达某一点时发生杀死单元,而且移动载荷还在继续移动加载。
用etable选择温度,但etable只能在post1里用,这样只能是加载结果后用post1提取温度值,而此时材料表面温度早已超过极限值,请问这个问题如何解决呢?
尝试过用小的载荷,可以算出结果,但根本就没有运行后面那个ekill命令。
部分程序如下:
nsel,s,loc,y,0
esln
*do,t,1e-8,tm,tinc
time,t
nsubst,100
sfe,all,1,hflux,,%heatf%
allsel,all
solve
*enddo
/post1
etable,t2,temp
esel,s,etab,t2,4000
finish
/solu
ekill,all
allsel,all
solve
esel,s,live
eplot
finish
还有一个问题是关于相变不收敛,加上热焓值结果就不收敛了,尝试过各种办法,但只要一加上焓值就不行了。
运行上面那个命令
nsel,s,loc,y,0
esln
。。。
结果出现很多这种警告,完全没有头绪是怎么回事
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5054 face 1 has convection applied.
This element heat flux will override the convection.
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5055 face 1 has convection applied.
This element heat flux will override the convection.
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5056 face 1 has convection applied.
This element heat flux will override the convection.
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5057 face 1 has convection applied.
This element heat flux will override the convection.
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5058 face 1 has convection applied.
This element heat flux will override the convection.
*** WARNING *** CP = 112.609 TIME= 14:43:18
Element 5059 face 1 has convection applied.
This element heat flux will override the convection. |
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