ANSYS热结构耦合分析实例文档格式.docx
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Dis_ver=3.0!
框架竖向层高
pp=（W_col-W_beam）/2
------------------------------------------------------------------------
定义热分析材料特性,包括导热性，比热，密度等
MPTEMP,,20,800,900,1000!
定义随温度变化的钢材的导热性
MPDATA,KXX,1,,53.334,27.36,27.36,27.36
MPTEMP!
清除当前温度场
MPTEMP,,20,100,180,260,380!
定义随温度变化的钢材的比热
MPDATA,C,1,,439.8,487.62,522.33,550.75,596.52
MPTEMP,,500,600,640,720,735
MPDATA,C,1,,666.5,759.92,798.67,1388,5000
MPTEMP,,750,830,900,1000
MPDATA,C,1,,1483,725,650,650
MP,DENS,1,7850!
定义钢材的密度
建立分析模型
生成第一根柱：
N,1,-H_col/2,,-W_col/2!
产生构成柱截面的节点
N,2,-H_col/2,,-W_col/2+pp
NGEN,4,1,2,,,,,（B_col-pp）/3
N,6,-H_col/2,,tw_col/2
NGEN,4,1,6,,,,,（B_col-pp）/3
N,10,-H_col/2,,W_col/2
NGEN,2,10,1,10,1,tf_col
NGEN,10,6,15,16,1,D_col/10
NGEN,2,60,11,20,1,D_col
NGEN,2,10,71,80,1,tf_col
NGEN,2,100,all,,,,（Dis_ver-H_beam/2）/60!
将已生成的节点沿y方向偏移（Dis_ver-H_beam/2）/60拷贝一层，节点号加100
从已产生的两层节点生成第一层单元
E,1,2,12,11,101,102,112,111!
定义翼缘上第一个单元
EGEN,9,1,1!
沿翼缘长度拷贝9个单元
E,15,16,22,21,115,116,122,121!
定义腹板上第一个单元，编号为10
EGEN,10,6,10!
拷贝单元10形成腹板
E,71,72,82,81,171,172,182,181!
定义另一翼缘上一个单元，编号20
EGEN,9,1,20!
拷贝单元20形成另一翼缘
将第一层单元沿y方向拷贝60层，ANSYS自动生成所有的节点。
节点编号每层加100。
EGEN,60,100,1,28,1,,,,,,0,（Dis_ver-H_beam/2）/60
将柱的模型继续向上延伸梁的截面高度，生成梁柱节点。
节点处单元尺寸尽量与梁的截面单元尺寸一致。
NSEL,S,NODE,,6001,6090,1!
将顶层节点向上偏移梁的翼缘厚度，
NGEN,2,100,ALL,,,,tf_beam!
并生成一层单元
EGEN,2,100,1653,1680,1
NSEL,ALL
NSEL,S,NODE,,6101,6190!
将顶层节点向上偏移梁的腹板净高度，
NGEN,11,100,ALL,,,,D_beam/10!
并生成10层单元
EGEN,11,100,1681,1708,1
NSEL,S,NODE,,7101,7190!
将顶层节点向上偏移梁的翼缘厚度
EGEN,2,100,1961,1988,1
将实体模型的柱向上延伸H_beam的高度，避免梁单元和实体单元在梁柱节点处切换
NSEL,S,NODE,,7201,7290!
生成6层单元，每层高H_beam/6
NGEN,7,100,ALL,,,,H_beam/6
EGEN,7,100,1989,2016,1
NSEL,ALL
第一根实体模型柱完成。
共计：
节点79层，每层编号1-90，逐层加100，顶层编号7801-7890
单元78层，自动编号。
每层28个，共28*78=2184个
拷贝第一根柱生成第二根柱
NGEN,2,10000,ALL,,,Dis_hor!
拷贝所有的节点，节点号加10000
EGEN,2,10000,1,2184,1!
拷贝所有的单元
生成梁
梁被夹在两根柱之间，实际长度为Dis_hor-H_col
生成左侧形成一个梁截面的所有节点，梁的节点编号从20001开始
N,20001,H_col/2,Dis_ver-H_beam/2,-W_beam/2
NGEN,4,1,20001,,,,,B_beam/3
N,20005,H_col/2,Dis_ver-H_beam/2,tw_beam/2
NGEN,4,1,20005,,,,,B_beam/3
NGEN,2,10,20001,20008,1,,tf_beam
NGEN,10,6,20014,20015,1,,D_beam/10
NGEN,2,60,20011,20018,1,,D_beam
NGEN,2,10,20071,20078,1,,tf_beam
沿x方向偏移（Dis_hor-H_col）/100拷贝一层节点，节点编号加100
NGEN,2,100,20001,20090,,（Dis_hor-H_col）/100
生成梁的第一层截面单元
两根柱单元总数为4368，故梁的单元编号从4369开始。
E,20001,20002,20012,20011,20101,20102,20112,20111!
定义单元4369
EGEN,7,1,4369!
拷贝单元4369形成一个翼缘
E,20014,20015,20021,20020,20114,20115,20121,20120!
定义单元4376
EGEN,10,6,4376!
拷贝单元4376形成腹板
E,20071,20072,20082,20081,20171,20172,20182,20181!
定义单元4386
EGEN,7,1,4386!
拷贝单元4386形成另一翼缘
沿x方向拷贝100层生成整根梁，每层高度（Dis_hor-H_col）/100
EGEN,100,100,4369,4392,1,,,,,,（Dis_hor-H_col）/100
梁的实体模型完成
总计：
梁的节点为101层，每层编号1-88。
从20001开始，逐层加100
左端截面的节点为20001-20088；
右端截面的节点为30001-30088
每层单元数为24个，总计24*100=2400个。
单元编号为4369-6768
----------------------------------------------------------------------
建立梁和柱连接处的耦合关系。
CPINTF,all,0.002
FINISH
/SOLU
ANTYPE,TRANS!
定义分析类型
TUNIF,20!
定义初始温度
-----------------------------------------------------------------------
定义边界条件，并求解
选择梁的上翼缘上表面，定义为HTUP
NSEL,S,NODE,,20081,30081,100
NSEL,A,NODE,,20082,30082,100
NSEL,A,NODE,,20083,30083,100
NSEL,A,NODE,,20084,30084,100
NSEL,A,NODE,,20085,30085,100
NSEL,A,NODE,,20086,30086,100
NSEL,A,NODE,,20087,30087,100CM,HTUP,NODE!
定义以上所选节点为HTUP
选择梁的下翼缘下表面，定义为HTDOWN
NSEL,S,NODE,,20001,30001,100
NSEL,A,NODE,,20002,30002,100
NSEL,A,NODE,,20003,30003,100
NSEL,A,NODE,,20004,30004,100
NSEL,A,NODE,,20005,30005,100
NSEL,A,NODE,,20006,30006,100
NSEL,A,NODE,,20007,30007,100
CM,HTDOWN,NODE!
定义以上所选节点为HTDOWN
选择梁的左侧，定义为HTLEFT
NSEL,S,NODE,,20011,30011,100
NSEL,A,NODE,,20012,30012,100
NSEL,A,NODE,,20013,30013,100
NSEL,A,NODE,,20014,30014,100
NSEL,A,NODE,,20020,30020,100
NSEL,A,NODE,,20026,30026,100
NSEL,A,NODE,,20032,30032,100
NSEL,A,NODE,,20038,30038,100
NSEL,A,NODE,,20044,30044,100
NSEL,A,NODE,,20050,30050,100
NSEL,A,NODE,,20056,30056,100
NSEL,A,NODE,,20062,30062,100
NSEL,A,NODE,,20068,30068,100
NSEL,A,NODE,,20074,30074,100
NSEL,A,NODE,,20071,30071,100
NSEL,A,NODE,,20072,30072,100
NSEL,A,NODE,,20073,30073,100
CM,HTLEFT,NODE!
定义以上所选节点为HTLEFT
选择梁的右侧，定义为HTRIGHT
NSEL,S,NODE,,20015,30015,100
NSEL,A,NODE,,20016,30016,100
NSEL,A,NODE,,20017,30017,100
NSEL,A,NODE,,20018,30018,100
NSEL,A,NODE,,20021,30021,100
NSEL,A,NODE,,20027,30027,100
NSEL,A,NODE,,20033,30033,100
NSEL,A,NODE,,20039,30039,100
NSEL,A,NODE,,20045,30045,100
NSEL,A,NODE,,20051,30051,100
NSEL,A,NODE,,20057,30057,100
NSEL,A,NODE,,20063,30063,100
NSEL,A,NODE,,20069,30069,100
NSEL,A,NODE,,20075,30075,100
NSEL,A,NODE,,20076,30076,100
NSEL,A,NODE,,20077,30077,100
NSEL,A,NODE,,20078,30078,100
CM,HTRIGHT,NODE!
定义以上所选节点为HTRIGHT
施加热边界条件并求解
*DO,tm,60,180,60!
定义时间参数tm从60到600（秒）
Time,tm!
当前时间为tm
DELTIM,20!
定义初始时间步长
AUTOTS,ON!
打开自动步长控制
Temp=20+345*LOG10（8*tm/60+1!
计算环境空气温度
SF,HTUP,CONV,25,Temp!
对受热边界施加对流作用
SF,HTDOWN,CONV,25,Temp
SF,HTLEFT,CONV,25,Temp
SF,HTRIGHT,CONV,25,Temp
SF,HTUP,RDSF,0.7,1!
定义热辐射场
SF,HTDOWN,RDSF,0.7,2
SF,HTLEFT,RDSF,0.7,3
SF,HTRIGHT,RDSF,0.7,4
STEF,5.6696E-8!
定义Stefan-Boltzmann常数
TOFFST,273!
定义绝对温度偏差
SPCTEMP,1,Temp!
定义热辐射场的温度为火的温度
SPCTEMP,2,Temp
SPCTEMP,3,Temp
SPCTEMP,4,Temp
SOLVE
*ENDDO
FINISH
ANSYS热-结构耦合分析实例
（2）
结构分析
/PREP7
/TITLE,Part2:
structuralanalysis
ET,1,SOLID45,1,1
!
对应于SOLID70的结构单元为SOLID45
ET,2,BEAM188
单元类型2为BEAM188
---------------------------------------------------------------
定义结构分析材料特性
fy=275E+6
常温下屈服应力
exx=2.1E+11
常温下杨氏模量
MPTEMP
清除旧的温度场
MPTEMP,,20,100,200,300,400
定义随温度变化的杨氏模量
MPDATA,EX,1,,exx,exx,0.9*exx,0.8*exx,0.7*exx
MPTEMP,,500,600,700,800,900
MPDATA,EX,1,,0.6*exx,0.31*exx,0.13*exx,0.09*exx,0.0675*exx
MP,NUXY,1,0.3
定义泊松比
MP,ALPX,1,1.4E-5
定义热膨胀系数
定义随温度变化的应力-应变关系
TB,MISO,1,10,3
共10个温度，每个温度时的应力-应变由3个点描述
TBTEMP,20
20度时的应力-应变关系
TBPT,,fy/exx,fy
TBPT,,0.02,fy
TBPT,,0.15,fy
TBTEMP,100
100度时的应力-应变关系
TBTEMP,200
200度时的应力-应变关系
TBPT,,0.807*fy/（0.9*exx）,0.807*fy
TBTEMP,300
300度时的应力-应变关系
TBPT,,0.613*fy/（0.8*exx）,0.613*fy
TBTEMP,400
400度时的应力-应变关系
TBPT,,0.420*fy/（0.7*exx）,0.420*fy
TBTEMP,500
500度时的应力-应变关系
TBPT,,0.360*fy/（0.6*exx）,0.360*fy
TBPT,,0.02,0.780*fy
TBPT,,0.15,0.780*fy
TBTEMP,600
600度时的应力-应变关系
TBPT,,0.180*fy/（0.310*exx）,0.180*fy
TBPT,,0.02,0.470*fy
TBPT,,0.15,0.470*fy
TBTEMP,700
700度时的应力-应变关系
TBPT,,0.075*fy/（0.130*exx）,0.075*fy
TBPT,,0.02,0.230*fy
TBPT,,0.15,0.230*fy
TBTEMP,800
800度时的应力-应变关系
TBPT,,0.050*fy/（0.090*exx）,0.050*fy
TBPT,,0.02,0.110*fy
TBPT,,0.15,0.110*fy
TBTEMP,900
900度时的应力-应变关系
TBPT,,0.0375*fy/（0.0675*exx）,0.0375*fy
TBPT,,0.02,0.060*fy
TBPT,,0.15,0.060*fy
-------------------------------------------------------------------
定义梁和柱的截面特性
SECTYPE,1,beam,I,column
定义柱截面为截面类型1
SECDATA,W_col,W_col,H_col,tf_col,tf_col,tw_col
定义柱的截面尺寸
SECTYPE,2,beam,I,beam
定义梁截面为截面类型2
SECDATA,W_beam,W_beam,H_beam,tf_beam,tf_beam,tw_beam
定义梁截面尺寸
用梁单元建立框架的剩余部分的模型
----------------------------------------------------------------
K,1,,Dis_ver+H_beam*1.5
定义生成框架的关键点
K,2,,2*Dis_ver
K,3,,3*Dis_ver
K,4,Dis_hor,Dis_ver+H_beam*1.5
K,5,Dis_hor,2*Dis_ver
K,6,Dis_hor,3*Dis_ver
K,7,Dis_hor+H_col/2,Dis_ver
K,8,2*Dis_hor
K,9,2*Dis_hor,Dis_ver
K,10,2*Dis_hor,2*Dis_ver
K,11,2*Dis_hor,3*Dis_ver
K,12,3*Dis_hor
K,13,3*Dis_hor,Dis_ver
K,14,3*Dis_hor,2*Dis_ver
K,15,3*Dis_hor,3*Dis_ver
K,100,-3,3
定义用于确定梁的主轴方向的关键点
K,200,5,20
生成线
L,1,2
线1-10用来生成柱单元
L,2,3
L,4,5
L,5,6
L,8,9
L,9,10
L,10,11
L,12,13
L,13,14
L,14,15
L,2,5
线11-18用来生成梁单元
L,3,6
L,7,9
L,5,10
L,6,11
L,9,13
L,10,14
L,14,15
定义线的属性
LSEL,S,LINE,,1,10,1
定义线1-10（柱）的属性
LATT,1,,2,,100,,1
LSEL,ALL
LSEL,S,LINE,,11,18,1
定义线11-18（梁）的属性
LATT,1,,2,,200,,2
LSEL,ALL
划分单元
LESIZE,ALL,0.3
定义单元尺寸
LMESH,ALL
划分单元
------------------------------------------------------------------
建立耦合与约束关系
CPINTF,ALL,0.002
自动耦合实体模型部分
实体模型和线模型之间有三个接口：
两个柱端的连接，以及底层中跨的梁左端连接到第二根实体柱的侧面
建立关键点1和第一根柱柱端的连接
N1=NODE（0,Dis_ver+H_beam*1.5,0）
找到对应于关键点1的节点号，标记为N1
num=0
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