*HEADING EC3FSFE2: EIGENVALUE ANALYSIS OF AN UNCONSTRAINED PATCH OF ELEMENTS [C3D15] *PREPRINT,ECHO=YES,HISTORY=NO,MODEL=NO *NODE 10, 0.,0.,1. 30, 1.,0.,1. 70, 0.,0.,0. 90, 1.,0.,0. 210, 0.,1.,1. 230, 1.,1.,1. 270, 0.,1.,0. 290, 1.,1.,0. 1010, .32,.186,.643 1030, .677,.305,.683 1070, .249,.342,.192 1090, .826,.288,.288 1210, .165,.745,.702 1230, .788,.693,.644 1270, .273,.750,.230 1290, .850,.649,.263 *NGEN 10,30,10 70,90,10 10,70,30 20,80,30 30,90,30 210,230,10 270,290,10 210,270,30 220,280,30 230,290,30 10,210,100 30,230,100 40,240,100 60,260,100 70,270,100 90,290,100 ***** 1010,1030,10 1070,1090,10 1010,1070,30 1020,1080,30 1030,1090,30 1210,1230,10 1270,1290,10 1210,1270,30 1220,1280,30 1230,1290,30 1010,1210,100 1030,1230,100 1040,1240,100 1060,1260,100 1070,1270,100 1090,1290,100 ***** 10,1010,500 30,1030,500 40,1040,500 50,1050,500 60,1060,500 70,1070,500 90,1090,500 140,1140,500 160,1160,500 210,1210,500 230,1230,500 240,1240,500 250,1250,500 260,1260,500 270,1270,500 290,1290,500 ***** 10,1070,530 30,1090,530 210,1270,530 230,1290,530 30,210,90 1030,1210,90 1090,1270,90 90,270,90 ***** *ELEMENT,TYPE=C3D15,ELSET=ALL 11,1010, 10,1070,1030, 30,1090, 510, 540,1040, 530, 560,1060,1020, 20,1080 12, 10, 70,1070, 30, 90,1090, 40, 570, 540, 60, 590, 560, 20, 80,1080 21,1210, 210,1270,1010, 10,1070, 710, 740,1240, 510, 540,1040,1110, 110,1170 22, 210, 270,1270, 10, 70,1070, 240, 770, 740, 40, 570, 540, 110, 170,1170 31,1070,1090,1270,1010,1030,1210,1080,1180,1170,1020,1120,1110,1040,1060,1240 32,1090,1290,1270,1030,1230,1210,1190,1280,1180,1130,1220,1120,1060,1260,1240 41,1030, 30,1090,1230, 230,1290, 530, 560,1060, 730, 760,1260,1130, 130,1190 42, 30, 90,1090, 230, 290,1290, 60, 590, 560, 260, 790, 760, 130, 190,1190 51,1230, 230,1290,1210, 210,1270, 730, 760,1260, 710, 740,1240,1220, 220,1280 52, 230, 290,1290, 210, 270,1270, 260, 790, 760, 240, 770, 740, 220, 280,1280 61, 70, 90, 270,1070,1090,1270, 80, 180, 170,1080,1180,1170, 570, 590, 770 62, 90, 290, 270,1090,1290,1270, 190, 280, 180,1190,1280,1180, 590, 790, 770 71,1010,1030,1210, 10, 30, 210,1020,1120,1110, 20, 120, 110, 510, 530, 710 72,1030,1230,1210, 30, 230, 210,1130,1220,1120, 130, 220, 120, 530, 730, 710 ***** *SOLID SECTION,ELSET=ALL,MATERIAL=MATNAME *MATERIAL,NAME=MATNAME *ELASTIC 1.E6,.25 *DENSITY 7.5E-4, *STEP *FREQUENCY, eigensolver=lanczos, SIM=NO 9, , ,-1.E7 *OUTPUT,FIELD *MODAL OUTPUT *CONTROLS,PARAMETERS=FIELD 1.E-8, 1., 10000. , , 1.E-12 *END STEP *STEP,NLGEOM *STATIC *DLOAD 12, P3, -10000. 22, P3, -10000. 42, P3, -10000. 52, P3, -10000. 61, P1, -10000. 62, P1, -10000. 71, P2, -10000. 72, P2, -10000. *BOUNDARY 10,1,2 70,1,3 90,2,3 270,1 270,3 *EL PRINT,FREQ=0 *NODE PRINT U,RF *END STEP *STEP,NLGEOM *FREQUENCY, eigensolver=lanczos, SIM=NO 9, , , -1.E+7 *OUTPUT,FIELD *MODAL OUTPUT *EL PRINT,FREQ=0 *NODE PRINT,FREQ=0 *BOUNDARY,OP=NEW *END STEP