为什么找不到solid73单元？

nnnliang

本人刚学习ansys，练习中想用solid73单元，在添加单元时，下拉选单中有其他单元，却没有solid73单元。不知如何解决。请指教。谢谢。

venture

SOLID72和SOLID73拥有转动自由度，便于和梁、壳单元结合，在Ansys单元手册中，没有这两种单元的详细描述，下面为SOLID72和shell63结合计算的简单算例。

The test problem below illustrates this. A one inch wide model with a
modulus similar to aluminium starts with a 1 inch cube of SOLID72
elements. From the centre of this projects a 29-inch long SHELL63
beam. The shells and SOLID72 elements are connected simply by their common
rotational DOF. A 10-psi pressure is applied to the shell elements, which
produces a moment of about 4500 in-lb at the connection to the SOLID72
elements. This results in approximately a 12.5-degree rotation between
the SOLID72 portion of the model and the shells. This actually appears to
be a local rotational deformation in the immediately adjacent SOLID72
elements. The SOLID72 elements do not provide full moment
continuity. They will prevent a complete hinge, however, and this
modelling technique may be adequate in some cases.

/prep7
et,1,72
et,2,63
r,2,1
mp,ex,1,1e7
block,,1,,.5,-.5,.5
block,,1,-.5,0,-.5,.5
wprot,,-90
rect,1,30,-.5,.5 ! area at center of two blocks
nummrg,kp
esize,.25
vmesh,all
type,2
real,2
esha,2
esize,.5
aslv,u
amesh,all
esel,s,enam,,63
nsle
sf,all,pres,10
alls
nsel,s,loc,x
d,all,all
nsel,all
save,model,db
fini
/solu
solve
fini
/post1
set,last
nsel,s,loc,x,1
prdi
nsel,all
fini
/exit,nosa

solid73单元在GUI里面没有，要用命令流来操作。

狼跃冲顶

原帖由 venture 于 2007-1-4 17:07 发表

                               
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SOLID72和SOLID73拥有转动自由度，便于和梁、壳单元结合，在Ansys单元手册中，没有这两种单元的详细描述，下面为SOLID72和shell63结合计算的简单算例。

The test problem below illustrates this. A one inch wi ...

esha,2和prdi
这2个命令流代表什么意思？

[ 本帖最后由 狼跃冲顶 于 2009-1-10 22:59 编辑 ]