*HEADING
 Transfer from Standard to Explicit:  Test for B31 element
 - Explicit analysis
 - Unloading of the tension 
*IMPORT,UPDATE=NO,STATE=YES
 RECT, BOX, CIRC, HEX, I, L, PIPE, TRAP
*IMPORT NSET
 ALL, LEFT, RIGHT 
*BOUNDARY
 LEFT, 1,6
 RIGHT, 2,6
**
**
*NSET, NSET=QA_TEST_ALLNODES
ALL,
**
*STEP
*DYNAMIC,EXPLICIT
 , 0.02
*BULK VISCOSITY
0.15,
*FILE OUTPUT,TIMEMARKS=YES,NUM=1
*NODE FILE
 U,
 COORD,
*OUTPUT, FIELD, TIMEMARKS=YES, NUMBER INTERVAL=1
*NODE OUTPUT, NSET=QA_TEST_ALLNODES
 U,
 COORD,
*OUTPUT,FIELD,VARIABLE=PRESELECT
*OUTPUT,HISTORY,VARIABLE=PRESELECT,TIMEINT=0.02
*END STEP