problem description
title="Distribued Load Sample Problem (Logan 6.28, p.261)"
nodes=5 elements=4

material properties
steel A=0.5e-2 Iy=0.5e-4 Iz=0.5e-4 J=1 G=1 E=210e9

constraints
fixed Tx=C Ty=C Rz=C
free  Tx=U Ty=U Rz=U

nodes
1 x=0  y=0	constraint=fixed
2 x=0  y=4	constraint=free
3 x=10 y=4	constraint=fixed
4 x=0  y=8	constraint=free
5 x=10 y=8	constraint=fixed

distributed loads
tri1 direction=GlobalX values=(1,300e3) (2,150e3)
tri2 direction=GlobalX values=(1,150e3) (2,0)

beam3d elements
1 nodes=[1,2] material=steel 	load=tri1
2 nodes=[2,4] 			load=tri2
3 nodes=[2,3]
4 nodes=[4,5]

end