*HEADING
 1D transient wave propagation, solid  medium, incident wave load, planar
 and defined through pressure amplitude
 Use *BEAM FLUID INERTIA with B31, *BEAM SECTION
**
*PREPRINT,ECHO=NO,HISTORY=NO,MODEL=YES
*NODE,NSET=BEAM
*ELEMENT,TYPE=B31,ELSET=BEAM
**************************
*SURFACE, NAME=IW_LOAD
BEAM,S1
**************************
*BEAM SECTION,SECTION=RECT,TEMPERATURE=GRADIENTS,MATERIAL=SOLID,ELSET=BEAM
2.E-2, 1.E-2
0.0, 0.0,  -1.0
3,
*BEAM FLUID INERTIA, FULL
*MATERIAL,NAME=SOLID
*DENSITY
 1.E3
*ELASTIC
 1.E6,0.0
**
**************************
*INCIDENT WAVE PROPERTY,NAME=IWPROP,TYPE=PLANE
*INCIDENTWAVE FLUID PROPERTY
*AMPLITUDE,DEFINITION=SMOOTH STEP,NAME=PRESSUREVTIME
0.0,0.0,0.0005,1.0,0.001,0.0
**************************
*BOUNDARY
BEAM,ENCASTRE
**
**************************
*RESTART,WRITE
**
*STEP
*DYNAMIC,EXPLICIT,DIRECT
 .0001,.0010
*INCIDENTWAVE,PRESSUREAMPLITUDE=PRESSUREVTIME,PROPERTY=IWPROP
IW_LOAD,1.E3
**
*OUTPUT,FIELD, OP=ADD,NUMBER=1
*NODE OUTPUT
 RF,
*OUTPUT,HISTORY,OP=ADD,FREQUENCY=1
*NODE OUTPUT,NSET=BEAM
 RF,
*ENDSTEP
**
**