*Heading
 Transfer from Explicit to Standard or Explicit
    - first Explicit analysis
    - elements T2D2 and MASS
    - gravity loading (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=T2D2, Elset=TRUSS1
 1,  1,  2
*Solid section, Elset=TRUSS1, Material=MAT1
 0.0004, 
*ELEMENT, TYPE=T2D2, ELSET=TRUSS2
 2, 11, 12
*Solid section, Elset=TRUSS2, Material=MAT2
 0.0004, 
**
*Element, Type=MASS, Elset=MASSES
 101, 1
 102, 2
**
*Nset, Nset=ENDS
 2, 12
*Elset, Elset=TRUSSES
 TRUSS1, TRUSS2
**
*Material, Name=MAT1
*Elastic
 4.E6, 0.3
*Density
 4000., 
*Material, Name=MAT2
*Elastic
 4.E6, 0.3
*Density
 8000., 
*Mass, Elset=MASSES
 1.6,
**
*Boundary
   1,  1,3
  11,  1,3
   2,  1,1
   2,  3,3
  12,  1,1
  12,  3,3
**
*Restart, Write
**
***********************************************************
*Step
*Dynamic, Explicit, Direct user control
 1.e-5, 0.01
**
*Dload
   , GRAV, 9.81, 0., -1., 0.
**
*Output, Field
*Element output, Elset=TRUSSES
 S,
*Node output
 U,
*Output, History
*Node output, NSET=ENDS
 U2,
*End step