*Heading
 A one element truss along global x-axis modeled using user defined element.
 The element is coded in "vuel_truss_fieldvar.f".
 Geometrically Nonlinear, No mass scaling
 Young's modulus is function of field variable
*Parameter
 CsArea=1.002
 YoungsMod1=2.1E7
 fieldvar1=0.3
 YoungsMod2=2.1E6
 fieldvar2=0.8 
 PoissonRatio=0.0
 Density=7200.0
*Node
 1, 0.0, 0.0, 0.0
 2, 1.0, 0.0, 0.0
*Nset, Nset=AllNodes
 1,2
*Nset, Nset=LeftNode
 1,
*nset, nset=qa_test_leftnode
 1,
*Nset, Nset=RightNode
 2,
*nset, nset=qa_test_rightnode
 2,
*User Element, Nodes=2, Type=VU2, Properties=7, Coordinates=3, Variables=2
 1, 2, 3
*Element, Type=VU2, Elset=AllElements
 1, 1, 2
*Uel Property, Elset=AllElements
 <CsArea>, <YoungsMod1>, <fieldvar1>, <YoungsMod2>, <fieldvar2>, <PoissonRatio>, <Density>
*Boundary
 LeftNode, 1, 3, 0.0
 RightNode, 2, 3, 0.0
*Amplitude, Name=LoadAmp, Definition=Smooth Step
 0.0, 0.0, 1.0, 1.0
*Initial Conditions, type=field, variable=1
 AllNodes, 0.1
****************************************
*Step,Nlgeom=Yes
*Dynamic, Explicit, Element
 , 1.0
*Bulk Viscosity
 0.0, 0.0
*Cload, Amplitude=LoadAmp
 RightNode, 1, 1.0e6
*Field, variable=1
 AllNodes, 0.8
*Output, Field, Var=Preselect
*Output, History, Freq=1
*Node Output, Nset=AllNodes
 U1, V1, A1, RF1
*node output, nset=qa_test_leftnode
 RF1,
*node output, nset=qa_test_rightnode
 u1,
*Energy Output
*End Step