利用ANSYS生成变截面箱梁

利用ANSYS生成变截面箱梁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：Ⅰ-Ⅰ截面图全梁1/2图示Ⅰ-Ⅰ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,,3allsellsel,s,line,,2latt,2,,2,,101,,6allsellsel,s,line,,3latt,3,,3,,102,,9allsellsel,s,line,,4latt,4,,4,,102,,10lsel,s,line,,5latt,5,,5,,102,,11lmesh,1,5,1allsellmesh,1,5,1/eshape,1eplot