*Heading
 Transfer from Standard to Explicit, Update=YES, State=NO
    - second Explicit analysis
    - elements B31 and ROTARYI
    - torsion only (moment-Y)
**
*Import, Update=YES, State=NO
 BEAM1, BEAM2, ROTARY_INERTIA
*Import nset
 ENDS
*Import elset
 BEAMS
*Node
 21, -0.3,  0.0,  0.
 22, -0.3,  2.0,  0.
*Nset, Nset=END3
 22
*Nset, Nset=ENDS3
 ENDS, END3
*ELEMENT, TYPE=B31, ELSET=BEAM3
 3, 21, 22
*Beam section, Section=CIRC, Elset=BEAM3, Lumped=YES, Material=MAT3
 0.01,
*Elset, Elset=BEAMS3
 BEAMS, BEAM3 
*Element, Type=ROTARYI, Elset=ROTARY_INERTIA3
 221, 21
 222, 22 
*Material, Name=MAT3
*Elastic
 4.E6, 0.3
*Density
 2000., 
*Rotary inertia, Elset=ROTARY_INERTIA3
  0.92836565, 0.04247780e-4, 0.92836565, 0., 0., 0.
**
*Boundary
   1,  1,6
  11,  1,6
  21,  1,6
   2,  1,4
   2,  6,6
  12,  1,4
  12,  6,6
  22,  1,4
  22,  6,6
*Amplitude, Name=RAMP
 0., 0., 100., 100.
**
***********************************************************
*Step
*Dynamic, Explicit, Direct user control
 1.e-5, 0.01
**
*Cload, Amplitude=RAMP
 ENDS, 5, 0.8
*Output, Field, Number interval=1
*Node output
 U,
*Element output, Elset=BEAMS3
 S,
*Output, History, Frequency=1
*Node output, NSET=ENDS3
 UR2,
*End step