*Heading 2D model of Box with Air Adaptive mesh used to update Air 2D continuum elements tested ** PARTS ** *Part, name=air *End Part *Part, name=box *End Part ** ** ASSEMBLY ** *Assembly, name=Assembly ** *Instance, name=air-1, part=air *Node 1, 15., 25. 2, 15., 20. 3, 15., 15. 4, 15., 10. 5, 15., 5. 6, 15., 0. 7, 15., -5. 8, 15., -10. 9, 15., -15. 10, 15., -20. 11, 15., -25. 12, 20., 25. 13, 20., 20. 14, 20., 15. 15, 20., 10. 16, 20., 5. 17, 20., 0. 18, 20., -5. 19, 20., -10. 20, 20., -15. 21, 20., -20. 22, 20., -25. 23, 25., 25. 24, 25., 20. 25, 25., 15. 26, 25., 10. 27, 25., 5. 28, 25., 0. 29, 25., -5. 30, 25., -10. 31, 25., -15. 32, 25., -20. 33, 25., -25. 34, 30., 25. 35, 30., 20. 36, 30., 15. 37, 30., 10. 38, 30., 5. 39, 30., 0. 40, 30., -5. 41, 30., -10. 42, 30., -15. 43, 30., -20. 44, 30., -25. 45, 35., 25. 46, 35., 20. 47, 35., 15. 48, 35., 10. 49, 35., 5. 50, 35., 0. 51, 35., -5. 52, 35., -10. 53, 35., -15. 54, 35., -20. 55, 35., -25. 56, 40., 25. 57, 40., 20. 58, 40., 15. 59, 40., 10. 60, 40., 5. 61, 40., 0. 62, 40., -5. 63, 40., -10. 64, 40., -15. 65, 40., -20. 66, 40., -25. 67, 45., 25. 68, 45., 20. 69, 45., 15. 70, 45., 10. 71, 45., 5. 72, 45., 0. 73, 45., -5. 74, 45., -10. 75, 45., -15. 76, 45., -20. 77, 45., -25. *Element, type=AC2D4 1, 1, 2, 13, 12 2, 2, 3, 14, 13 3, 3, 4, 15, 14 4, 4, 5, 16, 15 5, 5, 6, 17, 16 6, 6, 7, 18, 17 7, 7, 8, 19, 18 8, 8, 9, 20, 19 9, 9, 10, 21, 20 10, 10, 11, 22, 21 11, 12, 13, 24, 23 12, 13, 14, 25, 24 13, 14, 15, 26, 25 14, 15, 16, 27, 26 15, 16, 17, 28, 27 16, 17, 18, 29, 28 17, 18, 19, 30, 29 18, 19, 20, 31, 30 19, 20, 21, 32, 31 20, 21, 22, 33, 32 21, 23, 24, 35, 34 22, 24, 25, 36, 35 23, 25, 26, 37, 36 24, 26, 27, 38, 37 25, 27, 28, 39, 38 26, 28, 29, 40, 39 27, 29, 30, 41, 40 28, 30, 31, 42, 41 29, 31, 32, 43, 42 30, 32, 33, 44, 43 31, 34, 35, 46, 45 32, 35, 36, 47, 46 33, 36, 37, 48, 47 34, 37, 38, 49, 48 35, 38, 39, 50, 49 36, 39, 40, 51, 50 37, 40, 41, 52, 51 38, 41, 42, 53, 52 39, 42, 43, 54, 53 40, 43, 44, 55, 54 41, 45, 46, 57, 56 42, 46, 47, 58, 57 43, 47, 48, 59, 58 44, 48, 49, 60, 59 45, 49, 50, 61, 60 46, 50, 51, 62, 61 47, 51, 52, 63, 62 48, 52, 53, 64, 63 49, 53, 54, 65, 64 50, 54, 55, 66, 65 51, 56, 57, 68, 67 52, 57, 58, 69, 68 53, 58, 59, 70, 69 54, 59, 60, 71, 70 55, 60, 61, 72, 71 56, 61, 62, 73, 72 57, 62, 63, 74, 73 58, 63, 64, 75, 74 59, 64, 65, 76, 75 60, 65, 66, 77, 76 ** Region: (air:Picked) *Elset, elset=_I1, internal, generate 1, 60, 1 ** Section: air *Solid Section, elset=_I1, material=air 1., *End Instance ** *Instance, name=box-1, part=box *Node 1, 45., 25. 2, 45., 30. 3, 15., 30. 4, 15., 25. 5, 45., -25. 6, 50., -25. 7, 50., 30. 8, 10., -25. 9, 15., -25. 10, 10., 30. 11, 10., -30. 12, 50., -30. 13, 39., 30. 14, 33., 30. 15, 27., 30. 16, 21., 30. 17, 21., 25. 18, 27., 25. 19, 33., 25. 20, 39., 25. 21, 45., 18.64305 22, 45., 12.18657 23, 45., 5.914043 24, 45., -0.2971706 25, 45., -6.487946 26, 45., -12.67191 27, 45., -18.8536 28, 50., -18.87713 29, 50., -12.73857 30, 50., -6.594023 31, 50., -0.4452127 32, 50., 5.711833 33, 50., 11.89206 34, 50., 18.14134 35, 50., 24.38045 36, 15., -18.7963 37, 15., -12.60802 38, 15., -6.424897 39, 15., -0.2434842 40, 15., 5.937357 41, 15., 12.11801 42, 15., 18.2986 43, 10., 24.25926 44, 10., 18.07484 45, 10., 11.91613 46, 10., 5.765978 47, 10., -0.3813907 48, 10., -6.528022 49, 10., -12.67498 50, 10., -18.82376 51, 15.47619, -30. 52, 21.25573, -30. 53, 27.04292, -30. 54, 32.8397, -30. 55, 38.66085, -30. 56, 44.55362, -30. 57, 38.85714, -25. 58, 32.90476, -25. 59, 27.01587, -25. 60, 21.14815, -25. *Element, type=CPS4 1, 1, 2, 13, 20 2, 20, 13, 14, 19 3, 19, 14, 15, 18 4, 18, 15, 16, 17 5, 17, 16, 3, 4 6, 2, 1, 35, 7 7, 1, 21, 34, 35 8, 21, 22, 33, 34 9, 22, 23, 32, 33 10, 23, 24, 31, 32 11, 24, 25, 30, 31 12, 25, 26, 29, 30 13, 26, 27, 28, 29 14, 27, 5, 6, 28 15, 8, 9, 36, 50 16, 50, 36, 37, 49 17, 49, 37, 38, 48 18, 48, 38, 39, 47 19, 47, 39, 40, 46 20, 46, 40, 41, 45 21, 45, 41, 42, 44 22, 44, 42, 4, 43 23, 43, 4, 3, 10 24, 8, 11, 51, 9 25, 9, 51, 52, 60 26, 60, 52, 53, 59 27, 59, 53, 54, 58 28, 58, 54, 55, 57 29, 57, 55, 56, 5 30, 5, 56, 12, 6 ** Region: (Solid:Picked) *Elset, elset=_I1, internal, generate 1, 30, 1 ** Section: Solid *Solid Section, elset=_I1, material=solid 1., *End Instance *Nset, nset=sir_s, instance=air-1 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22, 23, 33, 34 44, 45, 55, 56, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77 *Elset, elset=sir_s, instance=air-1 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 30, 31, 40 41, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 *Nset, nset=Solid_S, instance=box-1 1, 4, 5, 9, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 36 37, 38, 39, 40, 41, 42, 57, 58, 59, 60 *Elset, elset=Solid_S, instance=box-1 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 18, 19, 20, 21, 22, 25, 26, 27, 28, 29 *Nset, nset=_Set10, internal, instance=box-1 2, 3, 7, 10, 13, 14, 15, 16 *Nset, nset=left, instance=box-1 10 *Nset, nset=right, instance=box-1 7 *Nset, nset=load, instance=box-1 11,12 *Nset, nset=out_box, instance=box-1 2, 3, 7, 10, 13, 14, 15, 16 *Nset, nset=out_air, instance=air-1 44, 45, 55, 56, 66, 67 *Elset, elset=_Set10, internal, instance=box-1 1, 2, 3, 4, 5, 6, 23 *Nset, nset=Air, instance=air-1, generate 1, 77, 1 *Elset, elset=Air, instance=air-1, generate 1, 60, 1 *Elset, elset=_air_S1, internal, instance=air-1, generate 1, 10, 1 *Elset, elset=_air_S2, internal, instance=air-1, generate 10, 60, 10 *Elset, elset=_air_S3, internal, instance=air-1, generate 51, 60, 1 *Elset, elset=_air_S4, internal, instance=air-1, generate 1, 51, 10 *Surface, type=ELEMENT, name=air _air_S1, S1 _air_S2, S2 _air_S4, S4 _air_S3, S3 *Elset, elset=_Solid-s_S4, internal, instance=box-1 1, 2, 3, 4, 5, 25, 26, 27, 28, 29 *Elset, elset=_Solid-s_S1, internal, instance=box-1, generate 7, 14, 1 *Elset, elset=_Solid-s_S2, internal, instance=box-1, generate 15, 22, 1 *Surface, type=ELEMENT, name=Solid-s _Solid-s_S4, S4 _Solid-s_S1, S1 _Solid-s_S2, S2 ** Constraint: air-solid *Tie, name=air-solid, adjust=yes air, Solid-s *End Assembly ** ** MATERIALS ** *Material, name=air *Acoustic Medium 14.2e+3, *Density 1.1e-3, *Material, name=solid *Density 0.01, *Elastic 100,0. *Boundary left, 1, 2 right,1, 2 ** ---------------------------------------------------------------- ** ** STEP: Step-1 ** *Step, name=Step-1, perturbation *Frequency,norm=mass 10, ** ** OUTPUT REQUESTS ** *Restart, write, frequency=1 ** ** FIELD OUTPUT: F-Output-1 ** *Output, field, variable=PRESELECT *El Print, freq=999999 *Node Print, freq=999999 *End Step ** ---------------------------------------------------------------- ** ** STEP: Step-2 ** *Step, name=Step-2, nlgeom *Static 0.2, 1., 1e-05, 1. ** ** BOUNDARY CONDITIONS ** ** Name: BC-1 Type: Displacement/Rotation *Boundary, op=new left, 1, 2, 0.0 right, 2, 2, 35.0 ** ** OUTPUT REQUESTS ** *Restart, write, frequency=1 ** ** FIELD OUTPUT: F-Output-2 ** *ADAPTIVE MESH,FREQ=1,MESH=10,ELSET=Air *PRINT,ADAP=YES *Output, field *ELEMENT OUTPUT S *NODE OUTPUT U ** ** HISTORY OUTPUT: H-Output-1 ** *Output, history, variable=PRESELECT *End Step ** ---------------------------------------------------------------- ** ** STEP: Step-3 ** *Step, name=Step-3, nlgeom *Static *Boundary, op=new,FIXED left, 1, 2 right, 1, 2 ** *End Step ** ---------------------------------------------------------------- ** ** STEP: Step-4 ** *Step, name=Step-4, perturbation *Frequency,norm=mass 190,,,100 ** ** OUTPUT REQUESTS ** *Restart, write, frequency=1 ** ** FIELD OUTPUT: F-Output-1 ** *Output, field, freq=0 *End Step ** ---------------------------------------------------------------- ** ** STEP: Step-5 ** *step,name=Step-5,pert *STEADY STATE DYNAMICS,interval=range 0.41,0.43,10 *CLOAD,load case=1 load,1,1,100 *CLOAD,load case=2 load,2,2,10 *OUTPUT, FIELD, FREQ=0 *OUTPUT,HISTORY *NODE OUTPUT,NSET=out_box u, *NODE OUTPUT,NSET=out_air por, *END STEP ** ---------------------------------------------------------------- ** ** STEP: Step-6 ** *step,name=Step-6,pert *STEADY STATE DYNAMICS,DIRECT,interval=range 0.41,0.43,10 *CLOAD,load case=1 load,1,1,100 *CLOAD,load case=2 load,2,2,10 *OUTPUT, FIELD, FREQ=0 *OUTPUT,HISTORY *NODE OUTPUT,NSET=out_box u *NODE OUTPUT,NSET=out_air por *END STEP ** ---------------------------------------------------------------- ** ** STEP: Step-7 ** *step,name=Step-7,pert *STEADY STATE DYNAMICS,SUBSPACE PROJECTION,interval=range 0.41,0.43,10 *CLOAD,load case=1 load,1,1,100 *CLOAD,load case=2 load,2,2,10 *OUTPUT, FIELD, FREQ=0 *OUTPUT,HISTORY *NODE OUTPUT,NSET=out_box u, *NODE OUTPUT,NSET=out_air por, *END STEP