*Heading
 Transfer from Explicit to Explicit
 Test for B31, MASS and ROTARYI elements
 - first Explicit analysis
 - gravity loading only (g along -Y direction)
**
*Node
  1,  0.1,  0.0,  0.
  2,  0.1,  2.0,  0.
 11, -0.1,  0.0,  0.
 12, -0.1,  2.0,  0.
**
*Element, Type=B31, Elset=BEAM1
 1,  1,  2
*Beam section, Section=CIRC, Elset=BEAM1, Lumped=YES, Material=MAT1
 0.01,

**
*ELEMENT, TYPE=B31, ELSET=BEAM2
 2, 11, 12
*Beam section, Section=CIRC, Elset=BEAM2, Lumped=YES, Material=MAT2
 0.01,
  
*Element, Type=MASS, Elset=MASSES
 101, 1
 102, 2
*Element, Type=ROTARYI, Elset=ROTARY_INERTIA
 201, 1
 202, 2
**
*Nset, Nset=ENDS
 2, 12
*Elset, Elset=BEAMS
 1, 2
**
*Material, Name=MAT1
*Elastic
 4.E6, 0.3
*Density
 2000., 
*Material, Name=MAT2
*Elastic
 4.E6, 0.3
*Density
 8000., 
*Mass, Elset=MASSES
  1.8849556,
*Rotary inertia, Elset=ROTARY_INERTIA
  0.62836565, 0.94247780e-4, 0.62836565, 0., 0., 0.
**
*Boundary
   1,  1,6
  11,  1,6
   2,  1,1
   2,  3,6
  12,  1,1
  12,  3,6
**
*Restart, Write
**
***********************************************************
*Step
*Dynamic, Explicit, Direct user control
 1.e-05, 0.01
**
*Dload
 , GRAV, 9.81, 0., -1., 0.
**
*Output, Field, Number interval=1
*Node output
 U,
*Element output, Elset=BEAMS
 S,
*Output, History, Frequency=1
*Node output, NSET=ENDS
 U2,
*End step