64 lines
1.5 KiB
Fortran
64 lines
1.5 KiB
Fortran
subroutine rsurfu(h,p,tgt,dnds,x1,time,u,ciname,slname,msname,
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1 noel,node,lclose)
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include 'aba_param.inc'
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c
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character*80 ciname,slname,msname
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dimension p(3),tgt(3,2),dnds(3,2),x1(3,2),time(2)
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parameter(zero=0.d0,one=1.d0)
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c get cylinder radius
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stime=time(2)
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if(msname(1:5)=='INNER')then
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ri=0.4d0
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drdt=one
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if(stime<=one)then
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radius=ri+drdt*stime
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elseif(stime<=2.d0)then
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radius=ri+drdt*(2.d0-stime)
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else
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radius=ri
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endif
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else
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ri=1.8d0
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drdt=-one
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if(stime>=2.0d0)then
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radius=ri+drdt*(stime-2.0d0)
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else
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radius=ri
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endif
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endif
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c initialize variables
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do k1=1,2
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do k2=1,3
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tgt(k2,k1) = zero
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dnds(k2,k1) = zero
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p(k2) = zero
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enddo
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enddo
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c coordinates of point on deforming body
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x = x1(1,1)
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y = x1(2,1)
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z = x1(3,1)
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c project point onto unit radius cylinder
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r = ( x*x + y*y )**(0.5d0)
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x = x / r
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y = y / r
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c get point on rigid cylinder
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p(1) = radius*x
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p(2) = radius*y
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p(3) = z
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c get unit tangents
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tgt(1,1) = -y
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tgt(2,1) = x
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tgt(3,2) = one
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c get local curvatures
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dnds(1,1) = -y / radius
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dnds(2,1) = x / radius
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c get surface penetration depth
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if(msname(1:5)=='INNER')then
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h = radius - r
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else
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h = r - radius
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endif
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print *,radius,stime,msname(1:5),h
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return
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end
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