*heading
TEST EXTRAPOLATION=PARABOLIC. ROTATE MEMBRANE BY 45 DEG. 
*restart,write
*node
1,0,0,0
2,-.5,1,0
3,.5,1,0
4,.5,2,0
5,-.5,2,0
*element,type=b31,elset=beam
1,1,2
2,1,3
*element,type=m3d4,elset=memb
3,2,3,4,5
*beam section,elset=beam,mat=elas,sec=circ
.05, 

*membrane section,elset=memb,mat=elas
.05, 
*material,name=elas
*elastic
1.e9, 
*boundary
1,1,5,0.
**step,nlgeom,extrap=parabol
*step,nlgeom,extrap=parabol
*static
0.1,1.0
*boundary
1,6,6,0.78539812
*node file
u,rf
*controls,parameter=field
** adjust the intial time average flux
 ,,0.1
*end step