problem description
title="3d Beam Sample Problem (Logan #6.9, p.255)" nodes=3 elements=2

nodes
1 x=0 y=0 z=0 constraint=fixed
2 x=0 y=4 z=0 constraint=free force=moment
3 x=5 y=4 z=0 constraint=fixed

beam3d elements
1 nodes=[1,2] material=steel
2 nodes=[2,3] material=steel

material properties
steel e=210e9 a=2e-2 iy=2e-4 iz=2e-4 J=1 G=1

forces
moment mz=200e3

constraints
fixed tx=c ty=c tz=c rx=c ry=c rz=c
free tx=u ty=u rx=c ry=c rz=u

end
