*Heading SIMPLE VERIFICATION OF EXTERIOR EIGENANALYSIS *Preprint, echo=NO, model=NO, history=NO, contact=NO ** ** PARTS ** *Part, name=Duct *End Part ** ** ** ASSEMBLY ** *Assembly, name=Assembly ** *Instance, name=Duct-1, part=Duct *Node 1, 0., 0.00999999978 2, 0., 0. 3, 0.0100000007, 0.00999999978 4, 0.00999999978, 0. 5, 0.0200000014, 0.00999999978 6, 0.0199999996, 0. 7, 0.0300000012, 0.00999999978 8, 0.0299999993, 0. 9, 0.0400000028, 0.00999999978 10, 0.0400000028, 0. 11, 0.0500000007, 0.00999999978 12, 0.0500000007, 0. 13, 0.0600000024, 0.00999999978 14, 0.0600000024, 0. 15, 0.0700000003, 0.00999999978 16, 0.0700000003, 0. 17, 0.0800000057, 0.00999999978 18, 0.0800000057, 0. 19, 0.0900000036, 0.00999999978 20, 0.0900000036, 0. 21, 0.100000001, 0.00999999978 22, 0.100000001, 0. *Element, type=ACax4 1, 1, 2, 4, 3 2, 3, 4, 6, 5 3, 5, 6, 8, 7 4, 7, 8, 10, 9 5, 9, 10, 12, 11 6, 11, 12, 14, 13 7, 13, 14, 16, 15 8, 15, 16, 18, 17 9, 17, 18, 20, 19 10, 19, 20, 22, 21 *Element, type=ACINax2 11, 21, 22 *Nset, nset=_PickedSet2, internal, generate 1, 22, 1 *Elset, elset=_PickedSet2, internal, generate 1, 11, 1 ** Region: (Section-1:Picked) *Elset, elset=_PickedSet2, internal, generate 1, 11, 1 ** Section: Section-1 *Solid Section, elset=_PickedSet2, material=water_hm, refnode=1 1., *End Instance ** *Instance, name=Duct-2, part=Duct 0., 0.03, 0. *Node 1, 0., 0.00999999978 2, 0., 0. 3, 0.0200000014, 0.00999999978 4, 0.0199999996, 0. 5, 0.0400000028, 0.00999999978 6, 0.0399999991, 0. 7, 0.0600000024, 0.00999999978 8, 0.0599999987, 0. 9, 0.0800000057, 0.00999999978 10, 0.0800000057, 0. 11, 0.100000001, 0.00999999978 12, 0.100000001, 0. 13, 0., 0.00499999989 14, 0.00999999978, 0. 15, 0.0199999996, 0.00499999989 16, 0.0100000007, 0.00999999978 17, 0.0299999993, 0. 18, 0.0399999991, 0.00499999989 19, 0.0300000012, 0.00999999978 20, 0.049999997, 0. 21, 0.0600000024, 0.00499999989 22, 0.0500000045, 0.00999999978 23, 0.0700000003, 0. 24, 0.0800000057, 0.00499999989 25, 0.0700000077, 0.00999999978 26, 0.0900000036, 0. 27, 0.100000001, 0.00499999989 28, 0.0900000036, 0.00999999978 *Element, type=ACax8 1, 1, 2, 4, 3, 13, 14, 15, 16 2, 3, 4, 6, 5, 15, 17, 18, 19 3, 5, 6, 8, 7, 18, 20, 21, 22 4, 7, 8, 10, 9, 21, 23, 24, 25 5, 9, 10, 12, 11, 24, 26, 27, 28 *Element, type=ACINax3 6, 11, 12, 27 *Nset, nset=_PickedSet2, internal, generate 1, 28, 1 *Elset, elset=_PickedSet2, internal, generate 1, 6, 1 ** Region: (Section-1:Picked) *Elset, elset=_PickedSet2, internal, generate 1, 6, 1 ** Section: Section-1 *Solid Section, elset=_PickedSet2, material=water_hm,refnode=1 1., *End Instance ** *Instance, name=Duct-3, part=Duct 0., 0.015, 0. *Node 1, 0., 0.00999999978 2, 0., 0. 3, 0.100000001, 0. 4, 0.100000001, 0.00999999978 5, 0.00999999978, 0. 6, 0.0199999996, 0. 7, 0.0299999993, 0. 8, 0.0399999991, 0. 9, 0.0500000007, 0. 10, 0.0599999987, 0. 11, 0.0700000003, 0. 12, 0.0799999982, 0. 13, 0.0900000036, 0. 14, 0.0900000036, 0.00999999978 15, 0.0799999982, 0.00999999978 16, 0.0700000003, 0.00999999978 17, 0.0599999987, 0.00999999978 18, 0.0500000007, 0.00999999978 19, 0.0399999991, 0.00999999978 20, 0.0299999993, 0.00999999978 21, 0.0199999996, 0.00999999978 22, 0.00999999978, 0.00999999978 *Element, type=ACax3 1, 2, 5, 1 2, 22, 6, 21 3, 20, 7, 19 4, 18, 8, 9 5, 17, 10, 16 6, 16, 11, 15 7, 15, 11, 12 8, 15, 12, 14 9, 14, 12, 13 10, 14, 13, 4 11, 13, 3, 4 12, 16, 10, 11 13, 17, 9, 10 14, 18, 9, 17 15, 19, 8, 18 16, 8, 19, 7 17, 7, 20, 6 18, 20, 21, 6 19, 6, 22, 5 20, 22, 1, 5 *Element, type=ACINax2 21, 4, 3, *Nset, nset=_PickedSet2, internal, generate 1, 22, 1 *Elset, elset=_PickedSet2, internal, generate 1, 21, 1 ** Region: (Section-1:Picked) *Elset, elset=_PickedSet2, internal, generate 1, 21, 1 ** Section: Section-1 *Solid Section, elset=_PickedSet2, material=water_hm, refnode=1 1., *End Instance ** *Instance, name=Duct-4, part=Duct 0., 0.045, 0. *Node 1, 0., 0.00999999978 2, 0., 0. 3, 0.100000001, 0. 4, 0.100000001, 0.00999999978 5, 0.0199999996, 0. 6, 0.0399999991, 0. 7, 0.0599999987, 0. 8, 0.0799999982, 0. 9, 0.0799999982, 0.00999999978 10, 0.0599999987, 0.00999999978 11, 0.0399999991, 0.00999999978 12, 0.0199999996, 0.00999999978 13, 0.00999999978, 0. 14, 0.00999999978, 0.00499999989 15, 0., 0.00499999989 16, 0.0299999993, 0.00499999989 17, 0.0399999991, 0.00499999989 18, 0.0299999993, 0.00999999978 19, 0.0599999987, 0.00499999989 20, 0.0700000003, 0.00499999989 21, 0.0700000003, 0.00999999978 22, 0.0700000003, 0. 23, 0.0799999982, 0.00499999989 24, 0.0900000036, 0.00499999989 25, 0.0899999961, 0.00999999978 26, 0.0899999961, 0. 27, 0.100000001, 0.00499999989 28, 0.049999997, 0.00499999989 29, 0.049999997, 0.00999999978 30, 0.049999997, 0. 31, 0.0199999996, 0.00499999989 32, 0.0299999993, 0. 33, 0.00999999978, 0.00999999978 *Element, type=ACax6 1, 2, 5, 1, 13, 14, 15 2, 12, 6, 11, 16, 17, 18 3, 10, 7, 9, 19, 20, 21 4, 9, 7, 8, 20, 22, 23 5, 9, 8, 4, 23, 24, 25 6, 8, 3, 4, 26, 27, 24 7, 11, 7, 10, 28, 19, 29 8, 7, 11, 6, 28, 17, 30 9, 6, 12, 5, 16, 31, 32 10, 12, 1, 5, 33, 14, 31 *Element, type=ACINax3 11, 4, 3, 27, *Nset, nset=_PickedSet2, internal, generate 1, 33, 1 *Elset, elset=_PickedSet2, internal, generate 1, 11, 1 ** Region: (Section-1:Picked) *Elset, elset=_PickedSet2, internal, generate 1, 11, 1 ** Section: Section-1 *Solid Section, elset=_PickedSet2, material=water_hm,refnode=1 1., *End Instance ** *Elset, elset=_bottom_S3, internal, instance=Duct-1 10, *Elset, elset=_bottom_S3, internal, instance=Duct-2 5, *Elset, elset=_bottom_S2, internal, instance=Duct-4 6, *Elset, elset=_bottom_S2, internal, instance=Duct-3 11, *Surface, type=ELEMENT, name=bottom _bottom_S3, S3 _bottom_S2, S2 *End Assembly ** ** MATERIALS ** *Material, name=water_hm *Acoustic Medium 2.25e+07, *Density 1000., ** *********************************************** *STEP REAL EIGENANALYSIS *frequency 12,290.0, 3730.0 ** *OUTPUT, FIELD *NODE OUTPUT POR *END STEP *********************************************** *STEP COMPLEX EIGENANALYSIS *COMPLEX frequency 12,290,3000.00 *OUTPUT, FIELD *NODE OUTPUT POR *END STEP ***********************************************