*Heading
 AXISYMMETRIC TIRE-AIR INTERACTION
 REFERENCE SOLUTION USING *IMPORT
 USE RESTART FROM am_tire_acax8.inp
*preprint,model=yes,HIST=yes
*IMPORT,UPDATE=YES,STEP=1
 TIRE
*Node
1,132.894,17.4105
2,110,14.9999
3,110,12.1921
4,130.075,14.5615
5,110,0
6,132.111,5.69E-07
7,137.975,1.44E-04
8,127.27,20.3983
9,120.191,19.7686
10,114.404,17.4459
11,115.287,13.2969
12,120.927,14.643
13,126.104,14.9759
14,110,8.45017
15,110,4.31845
16,115.533,-5.12E-22
17,121.031,1.20E-16
18,126.519,-9.90E-12
19,131.763,5.48552
20,131.022,10.6113
21,137.506,6.19659
22,136.075,12.2761
23,115.419,8.96462
24,115.482,4.52289
25,120.859,9.62803
26,120.934,4.81361
27,126.087,10.0798
28,126.326,5.09469
51,136.315,11.8069
52,143.129,14.6038
53,110,19.919
54,110,15
55,140.992,-4.67E-33
56,138,-9.71E-33
57,144.996,-2.15E-36
58,139.596,13.1394
59,140.279,19.5501
60,135.585,22.9577
61,130.166,24.8095
62,124.455,25.4037
63,118.87,24.495
64,114.029,22.3233
65,110,18.2748
66,114.766,17.6431
67,119.534,19.6523
68,124.193,20.6544
69,128.626,20.3288
70,132.202,18.3006
71,134.673,15.2945
72,137.283,7.97499
73,137.755,4.0078
74,144.804,4.64455
75,144.339,9.47249
76,137.421,17.0905
77,134.022,20.2284
78,129.458,22.2244
79,124.345,22.7201
80,119.366,21.8218
81,114.646,19.8935
82,140.692,8.66072
83,141.145,4.3004
84,130.068,18.9118
85,126.709,17.7874
86,128.089,14.7687
87,131.535,16.037
88,123.729,20.5066
89,120.553,17.2463
90,123.515,14.8095
91,117.277,18.6879
92,114.845,15.3734
93,118.107,13.97
94,112.217,16.1707
95,110,13.5961
96,112.644,12.7445
97,110,10.3211
98,112.71,8.7074
99,115.353,11.1308
100,110,6.38431
101,112.741,4.42067
102,115.451,6.74375
103,110,2.15923
104,112.767,-2.56E-22
105,115.507,2.26144
106,118.139,9.29632
107,120.893,12.1355
108,118.208,4.66824
109,120.897,7.22082
110,118.282,5.98E-17
111,120.983,2.4068
112,123.473,9.85391
113,126.096,12.5279
114,123.63,4.95415
115,126.207,7.58724
116,123.775,-4.95E-12
117,126.422,2.54735
118,128.555,10.3455
119,130.549,12.5864
120,129.045,5.29011
121,131.393,8.04839
122,129.315,2.84E-07
123,131.937,2.74276
124,135.053,7.27E-05
125,137.803,3.09812
126,134.651,5.84303
127,136.966,9.27632
128,133.579,11.4538
129,134.751,15.0282
130,137.958,12.4727
131,138.508,15.1142
132,136.048,16.1919
133,135.492,13.5505
134,141.364,13.873
135,141.703,17.0759
136,138.85,18.3202
137,135.722,18.6589
138,133.113,19.2662
139,133.435,16.7967
140,137.931,21.2543
141,134.805,21.5942
142,131.739,21.2265
143,129.042,21.2761
144,130.412,19.3114
145,132.874,23.8842
146,129.813,23.5165
147,126.9,22.471
148,124.268,21.6885
149,126.412,20.4837
150,127.307,25.1028
151,124.4,24.0627
152,121.857,22.2655
153,119.452,20.7341
154,121.869,20.1393
155,121.661,24.9369
156,119.119,23.156
157,117.012,20.8596
158,114.708,18.773
159,117.155,18.6255
160,116.449,23.3945
161,114.337,21.1086
162,112.333,19.101
163,109.992,16.631
164,112.396,16.2698
165,112.013,21.1242
166,109.997,19.0981
167,140.142,10.8994
168,142.515,9.065
169,143.732,12.037
170,136.796,9.89042
171,138.986,8.318
172,140.92,6.48105
173,142.976,4.47411
174,144.569,7.0577
175,137.513,5.99123
176,139.453,4.16003
177,141.075,2.15522
178,142.996,-1.06E-02
179,144.901,2.32074
180,137.864,2.005
181,139.497,-1.38E-02
*Element, type=ACAX8
 1,   1,   8,  13,   4,  84,  85,  86,  87
 2,   8,   9,  12,  13,  88,  89,  90,  85
 3,   9,  10,  11,  12,  91,  92,  93,  89
 4,  10,   2,   3,  11,  94,  95,  96,  92
 5,   3,  14,  23,  11,  97,  98,  99,  96
 6,  14,  15,  24,  23, 100, 101, 102,  98
 7,  15,   5,  16,  24, 103, 104, 105, 101
 8,  11,  23,  25,  12,  99, 106, 107,  93
 9,  23,  24,  26,  25, 102, 108, 109, 106
10,  24,  16,  17,  26, 105, 110, 111, 108
11,  12,  25,  27,  13, 107, 112, 113,  90
12,  25,  26,  28,  27, 109, 114, 115, 112
13,  26,  17,  18,  28, 111, 116, 117, 114
14,  13,  27,  20,   4, 113, 118, 119,  86
15,  27,  28,  19,  20, 115, 120, 121, 118
16,  28,  18,   6,  19, 117, 122, 123, 120
17,   6,   7,  21,  19, 124, 125, 126, 123
18,  19,  21,  22,  20, 126, 127, 128, 121
19,  20,  22,   1,   4, 128, 129,  87, 119
*Elset, elset=AIR, generate
  1,  19,   1
*Solid Section, elset=AIR, material=AIR
1.,
*Nset, nset=CENT
 53, 54, 65
*Nset, nset=NOUT
 53, 54, 65, 69, 70
*Nset, nset=SYMM, generate
 55,  57,   1
*Nset, nset=TIRE, generate
 51,  83,   1
*Elset, elset=AIR_S1, generate
 1,  4,  1
*Elset, elset=AIR_S2, generate
 17,  19,   1
*Elset, elset=LINER_S2, generate
 66,  70,   2
*Elset, elset=LINER_S4, generate
 51,  63,   2
*Elset, elset=Set-1, generate
  1,  19,   1
*Elset, elset=air-el, generate
  1,  19,   1
*Surface, type=ELEMENT, name=air
 air_S2, S2
 air_S1, S1
** Constraint: air-liner
*Tie, name=air_liner, adjust=yes,position=3
 air, liner
** 
** MATERIALS
** 
*Material, name=AIR
*Acoustic Medium
14200.,
*Density
 0.0012,
** 
** INTERACTION PROPERTIES
** 
** 
** BOUNDARY CONDITIONS
** 
** Name: Disp-BC-1 Type: Displacement/Rotation
*Boundary
SYMM, 2, 2
** Name: Disp-BC-2 Type: Displacement/Rotation
*Boundary
CENT, 1, 1
** Name: Disp-BC-3 Type: Symmetry/Antisymmetry/Encastre
*Boundary
54, YSYMM
** Name: Disp-BC-4 Type: Symmetry/Antisymmetry/Encastre
*Boundary
56, XSYMM
** ----------------------------------------------------------------
** 
** STEP: Step-1
** 
*Step, name=Step-1, nlgeom, inc=200
*Static
0.1, 1., 1e-05, 1.
**
**ADAPTIVE MESH,ELSET=AIR-el,FREQ=1,MESH SWEEPS=20
**PRINT,ADAPT=YES 
** LOADS
** 
** Name: SURFFORCE-1   Type: Pressure
*Dsload
LINER, P, -1.5
** 
** OUTPUT REQUESTS
** 
*Restart, write, frequency=1
** 
** FIELD OUTPUT: F-Output-1
** 
*Output, field
*Node Output
U, 
** 
** HISTORY OUTPUT: H-Output-1
** 
*Output, history
*El Print, freq=999999
*Node Print, freq=999999
*End Step
******* step for frequency extraction.
*step
*frequency, sim, acousticCoupling=ON, norm=mass
10
*print 
eigval
*end step
*step
*STEADY STATE DYNAMICS,interval=range
5.0,6.5,10
*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,interval=range
5.0,6.5,10
*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
5.0,6.5,10
*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