*Heading
 AXISYMMETRIC TIRE-AIR INTERACTION
 REFERENCE SOLUTION USING *IMPORT
 USE RESTART FROM am_tire_acax4.inp
*preprint,model=yes,HIST=yes
*IMPORT,UPDATE=YES,STEP=1
 TIRE
*Node,NSET=AIR
     1,  132.460    ,  15.1518    ,
     2,  110.000    ,  5.28825    ,
     3,  110.000    ,  4.30911    ,
     4,  129.938    ,  11.9450    ,
     5,  110.000    ,  0.00000    ,
     6,  133.245    ,-1.082987E-33,
     7,  139.436    ,-4.770273E-32,
     8,  126.352    ,  15.8512    ,
     9,  119.936    ,  12.4149    ,
    10,  114.575    ,  8.26568    ,
    11,  115.341    ,  6.62872    ,
    12,  120.839    ,  9.34829    ,
    13,  125.870    ,  11.1943    ,
    14,  110.000    ,  2.99478    ,
    15,  110.000    ,  1.53533    ,
    16,  115.818    ,-6.146446E-40,
    17,  121.592    ,-1.437656E-37,
    18,  127.370    ,-1.751631E-35,
    19,  132.574    ,  4.62338    ,
    20,  131.358    ,  8.83032    ,
    21,  138.692    ,  5.78211    ,
    22,  136.576    ,  11.2260    ,
    23,  115.523    ,  4.52027    ,
    24,  115.667    ,  2.27855    ,
    25,  121.002    ,  6.10990    ,
    26,  121.304    ,  3.06716    ,
    27,  126.296    ,  7.51112    ,
    28,  126.877    ,  3.79471    ,
*Element, type=ACAX4,ELSET=AIR
 1,  1,  8, 13,  4
 2,  8,  9, 12, 13
 3,  9, 10, 11, 12
 4, 10,  2,  3, 11
 5,  3, 14, 23, 11
 6, 14, 15, 24, 23
 7, 15,  5, 16, 24
 8, 11, 23, 25, 12
 9, 23, 24, 26, 25
10, 24, 16, 17, 26
11, 12, 25, 27, 13
12, 25, 26, 28, 27
13, 26, 17, 18, 28
14, 13, 27, 20,  4
15, 27, 28, 19, 20
16, 28, 18,  6, 19
17,  6,  7, 21, 19
18, 19, 21, 22, 20
19, 20, 22,  1,  4
*Solid Section, elset=air, material=air
1.,
*NSET,NSET=SYMA
 7
*Elset, elset=air_S1, generate
 1,  4,  1
*Elset, elset=air_S2
 17,  18, 19
*Surface, type=ELEMENT, name=air
 air_S2, S2
 air_S1, S1
**
** Constraint: air-liner
*Tie, name=air_liner, adjust=no
 air, liner
*Material, name=air
*Acoustic Medium
 14.2E3,
*Density
 1.2e-3,
*Surface Interaction, name=air_liner
1.,
** 
*Boundary
 SYMS, YSYMM
 CENT, 1, 1
 SYMA, YSYMM
** ----------------------------------------------------------------
** 
*Step,  nlgeom
*Static,direct
 1.0, 1.0
*Dsload
 liner, P, -1.5
*Output, field,freq=1
*NODE OUTPUT
 U
*Output, history,fre=1
*NODE OUTPUT,NSET=NOUT
 U,
*El Print, freq=100
 S
*Node Print, freq=100
 U
*End Step
** ----------------------------------------------------------------
*STEP
*FREQUENCY
 10
*END STEP
*STEP
*STEADY STATE DYNAMICS,interval=range
4.8,7.8,10
*CLOAD,load case=1
60,1,1,100
*CLOAD,load case=2
60,2,2,100
*OUTPUT, FIELD, FREQ=0
*OUTPUT,HISTORY 
*NODE OUTPUT,NSET=nout
u,
*END STEP
*step
*STEADY STATE DYNAMICS,SUBSPACE PROJECTION,interval=range
4.8,7.8,10
*CLOAD,load case=1
60,1,1,100
*CLOAD,load case=2
60,2,2,100
*OUTPUT, FIELD, FREQ=0
*OUTPUT,HISTORY 
*NODE OUTPUT,NSET=nout
u,
*END STEP
*step
*STEADY STATE DYNAMICS,DIRECT,interval=range
4.8,7.8,10
*CLOAD,load case=1
60,1,1,100
*CLOAD,load case=2
60,2,2,100
*OUTPUT, FIELD, FREQ=0
*OUTPUT,HISTORY 
*NODE OUTPUT,NSET=nout
u,
*END STEP