利用ANSYS建立变截面箱梁.docx

利用ANSYS建立变截面箱梁 Beam188/189 支持自定义的变截面1、首先建立变截面箱梁截面，并保存截面。必须保证每个截面的关键点号相同，而且为保证生成的准确性，应尽量的使得关键点有足够多的数目。 2、要对截面进行面积分块，并指定各线段的段数，这样才能做出规整的箱梁截面网格划分，也就保证了变截面箱梁桥各截面的网格模式相同，建议对于变化急剧的两边截面应使得线足够的短。并不是划分越密越可能成功，而是线越短越可能成功3。通过梁节段两端对应的截面建立taper截面，定义好桥的线形后，指定每段线对应的taper截面。4、可以用slist命令查看生成截面的性质，加深对secread 命令的理解以下例进行说明：-截面图 -截面图 全梁1/2图示-截面命令流finish/clear/prep7k,1k,2,2750k,3,3350,2400k,4,5450,2750k,5,6700,2850k,6,6700,3050k,7,0,3050k,8,0,280k,9,2359,280k,10,2886,2400k,11,1836,2750k,12,0,2750l,1,2l,2,3l,3,4l,4,5l,5,6l,6,7l,8,9l,9,10l,10,11l,11,12l,1,8l,7,12al,allarsym,x,allaadd,1,2nummrg,allnumcmp,alladele,1l,2,9l,13,20l,14,19l,10,3l,1,8al,22,17,25,19al,25,1,21,7lcomb,15,20wpoffs,-5450,2750wprota,90lsbw,18wpcsys,-1wpoffs,-3350,2400wprota,90lsbw,20wpcsys,-1wpoffs,-2886,2400wprota,90lsbw,18wpcsys,-1l,15,18l,14,21l,19,22l,7,12al,14,13,18,26al,18,12,29,27al,29,23,30,28al,30,15,31,20lcomb,9,10wpoffs,5450,2750wprota,90lsbw,6wpcsys,-1wpoffs,3350,2400wprota,90lsbw,32wpcsys,-1wpoffs,2886,2400wprota,90lsbw,6wpcsys,-1l,4,11l,3,23l,10,24al,5,4,6,10al,3,6,33,35al,24,35,34,36al,9,36,32,31ldiv,16,4ldiv,11,4ldiv,2,4ldiv,8,4l,30,27l,29,26l,28,25l,36,33l,35,32l,34,31al,23,42,49,39al,49,41,50,38al,50,40,51,37al,51,11,22,16al,24,48,52,45al,52,47,53,44al,53,46,54,43al,54,8,21,2nummrg,allnumcmp,allet,1,82lesize,1,4lesize,17,4lesize,19,4lesize,7,4lesize,22,1lesize,21,1lesize,25,1mshape,1,2dmshkey,2amesh,1amesh,2lesize,23,1lesize,42,1lesize,39,1lesize,49,1lesize,41,1lesize,50,1lesize,38,1lesize,40,1lesize,37,1lesize,51,1lesize,11,1lesize,16,1lesize,22,1lesize,24,1lesize,45,1lesize,48,1lesize,52,1lesize,44,1lesize,47,1lesize,53,1lesize,43,1lesize,46,1lesize,54,1lesize,2,1lesize,8,1lesize,21,1mshape,0,2dmshkey,1amesh,11amesh,12amesh,13amesh,14amesh,15amesh,16amesh,17amesh,18lesize,13,2lesize,26,2lesize,14,1lesize,18,1mshape,1,2dmshkey,2amesh,3lesize,12,3lesize,27,3lesize,18,1lesize,29,1mshape,1,2dmshkey,2amesh,4lesize,23,1lesize,29,1lesize,30,1lesize,28,1mshape,0,2dmshkey,2amesh,5lesize,30,1lesize,20,4lesize,31,1lesize,15,4mshape,1,2dmshkey,2amesh,6lesize,31,1lesize,9,4lesize,36,1lesize,32,4mshape,1,2dmshkey,2amesh,10lesize,35,1lesize,34,1lesize,24,1lesize,36,1mshape,0,2dmshkey,2amesh,9lesize,6,1lesize,35,1lesize,3,3lesize,33,3mshape,1,2dmshkey,2amesh,8lesize,6,1lesize,5,1lesize,10,2lesize,4,2mshape,1,2dmshkey,2amesh,7secwrite,mybox1主命令流 finish/clear/prep7k,5000,7800k,5001,8851k,5002,9899k,5003,10800k,5004,12300k,5005,0l,5000,5001l,5001,5002l,5002,5003l,5003,5004l,5000,5005k,100,8300,4000k,101,9500,4000k,102,10000,4000et,1,beam189mp,ex,1,3.0e10mp,prxy,1,0.167sectype,1,beam,meshsecread,mybox1,meshsectype,2,beam,meshsecread,mybox2,meshsectype,3,tapersecdata,1,7800secdata,2,8851et,2,beam189mp,ex,2,3.0e10mp,prxy,2,0.167sectype,4,beam,meshsecread,mybox2,meshsectype,5,beam,meshsecread,mybox3,meshsectype,6,tapersecdata,4,8851secdata,5,9899et,3,beam189mp,ex,3,3.0e10mp,prxy,3,0.167sectype,7,beam,meshsecread,mybox3,meshsectype,8,beam,meshsecread,mybox4,meshsectype,9,tapersecdata,7,9899secdata,8,10800et,4,beam189mp,ex,4,3.0e10mp,prxy,4,0.167sectype,10,beam,meshsecread,mybox4,meshet,5,beam189mp,ex,5,3.0e10mp,prxy,5,0.167sectype,11,beam,meshsecread,mybox1,meshlesize,1,2lesize,2,2lesize,3,2lesize,4,2lesize,5,8allsellsel,s,line,1latt,1,1,100,3