problem description
title="Simply Supported Beam" nodes=3 elements=2 analysis=static

nodes
1 x=0	y=0	constraint=pin
2 x=5	y=0	constraint=free		force=point
3 x=10	y=0	constraint=roller

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

material properties
steel E=30e6 A=1.0 Ix=127

forces
point	Fy=-1000

constraints
pin    Tx=c Ty=c Rz=u
roller Tx=u Ty=c Rz=u
free   Tx=u Ty=u Rz=u

end
