problem description
nodes=11 elements=10 title="Nonlinear flexural problem"
analysis=static-substitution

analysis parameters
load-steps=10
tolerance=1e-6
iterations=500

nodes
1  x=0   y=0   z=0	constraint=fixed
2  x=10   y=0   	constraint=free
3  x=20   y=0   
4  x=30   y=0   
5  x=40   y=0   
6  x=50   y=0   
7  x=60   y=0   
8  x=70   y=0   
9  x=80   y=0   
10  x=90   y=0  
11  x=100   y=0 	force=end_moment

beam elements
1   nodes=[1,2]		material=mat1
2   nodes=[2,3]
3   nodes=[3,4]
4   nodes=[4,5]
5   nodes=[5,6]
6   nodes=[6,7]
7   nodes=[7,8]
8   nodes=[8,9]
9   nodes=[9,10]
10   nodes=[10,11]

material properties
   mat1		E = 2e6  
 		A = 10  
		Ix = 5
		color = red
   mat2		E = 4e6  
 		A = 10  
		Ix = 5
		color = green

forces
end_moment   Mz=1e5

constraints
free  Tx=u  Ty=u   Rz=u
fixed Tx=c  Ty=c   Rz=c

end