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xmczhaozhao

铁虫 (小有名气)

应助: 0 (幼儿园)
金币: 178.1
帖子: 76
在线: 19.7小时
虫号: 1512699
注册: 2011-11-27
性别: MM
专业: 金属材料的力学行为

[求助] ANSYS热模拟高温拉伸，结构场计算出现问题，麻烦各位帮忙看看，附详细命令流

ANSYS热模拟高温拉伸，结构场计算出现问题，刚上手找不出原因，麻烦各位帮忙看看，附详细命令流如下：
finish
/clear
/filname,relashen003,0 !原先的日志文件
/prep7
ET,1,PLANE55 ! 原先为PLANE55，改高阶看看收敛的问题 ,结果一样
KEYOPT,1,3,1
MPTEMP,,,,,,,,
MPTEMP,1,100 !定义不同温度点
MPTEMP,2,200
MPTEMP,3,300
MPTEMP,4,400
MPTEMP,5,500
MPTEMP,6,600
MPTEMP,7,700
MPTEMP,8,800
MPTEMP,9,900
MPTEMP,10,1000
MPTEMP,11,1100
MPTEMP,12,1200
MPDATA,KXX,1,,0.04815    ! 定义材料不同温度下的热传导系数
MPDATA,KXX,1,,0.04647
MPDATA,KXX,1,,0.04396
MPDATA,KXX,1,,0.04145
MPDATA,KXX,1,,0.03810
MPDATA,KXX,1,,0.03517
MPDATA,KXX,1,,0.03182
MPDATA,KXX,1,,0.02596
MPDATA,KXX,1,,0.02596
MPDATA,KXX,1,,0.02680
MPDATA,KXX,1,,0.02880
MPDATA,KXX,1,,0.02973
!MPPLOT,KXX,1
MPTEMP,,,,,,,,    ! 定义材料不同温度下的比热
MPTEMP,1,100
MPTEMP,2,200
MPTEMP,3,400
MPTEMP,4,600
MPTEMP,5,710
MPTEMP,6,750
MPDATA,C,1,,468.9
MPDATA,C,1,,481.5
MPDATA,C,1,,523.4
MPDATA,C,1,,573.6
MPDATA,C,1,,636
MPDATA,C,1,,636
!MPPLOT,C,1
MPTEMP,,,,,,,,
MPTEMP,1,0
MPDATA,DENS,1,,7.81E-006    ! 密度
MPTEMP,,,,,,,,
MPTEMP,1,0
UIMP,1,REFT,,,400    !  定义热膨胀参考温度
MPDATA,ALPX,1,,1e-5 !  定义材料热膨胀系数
MPTEMP,,,,,,,,    ! 定义材料弹性模量和泊松比
!MPTEMP,1,20
!MPTEMP,2,100
!MPTEMP,3,200
!MPTEMP,4,300
MPTEMP,1,400
MPTEMP,2,500
MPTEMP,3,610
MPTEMP,4,660
MPTEMP,5,710
MPTEMP,6,750
!MPDATA,EX,1,,2e5       ! 弹性模量
!MPDATA,EX,1,,1.9e5
!MPDATA,EX,1,,1.7742e5
!MPDATA,EX,1,,1.65e5
MPDATA,EX,1,,1.5233e5
MPDATA,EX,1,,1.3979e5
MPDATA,EX,1,,1.26e5
MPDATA,EX,1,,1.04e5
MPDATA,EX,1,,9.5457e4
MPDATA,EX,1,,4.5e4
!MPDATA,PRXY,1,,0.28    ! 泊松比0.24~0.28
!MPDATA,PRXY,1,,0.28
!MPDATA,PRXY,1,,0.28
!MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPDATA,PRXY,1,,0.28
MPPLOT,EX,1
TB,MISO,1,5,, !Tb, lab, mat, ntemp,npts,tbopt,eosopt 定义非线性材料特性表
!TBTEMP,20       !Mat: 材料号 Ntemp: 数据的温度数 Npts: 对某一给定温度数据的点数
!TBPT,defi,0.0017627,352.54 !! Miso: 多段线性等向强化（最多100个点）
!TBPT,defi,0.025,494.6
!TBPT,defi,0.05,587.29
!TBPT,defi,0.1,645.68
!TBPT,defi,0.175,667.44
!TBPT,defi,2,700  !670
TBTEMP,400
TBPT,defi,0.001050351,160
TBPT,defi,0.025,230
TBPT,defi,0.05,315
TBPT,defi,0.1,350
TBPT,defi,0.175,365
TBPT,defi,2,400  !370
TBTEMP,610
TBPT,defi,0.000713,89.83
TBPT,defi,0.025,93.85
TBPT,defi,0.05,97.11
TBPT,defi,0.075,97.82
TBPT,defi,2,120  !100
TBTEMP,660
TBPT,defi,0.000635,66.02
TBPT,defi,0.025,73.11
TBPT,defi,0.05,73.81
TBPT,defi,2,100  !75
TBTEMP,710             !TBTEMP,660
TBPT,defi,0.00046,43.91    !TBDATA,,66,92,,,, 双线性等向强化的屈服应力和切线模量
TBPT,defi,0.0084,44.49
TBPT,defi,0.025,45.19
TBPT,defi,2,80 !50
TBTEMP,750
TBPT,defi,0.000834667,37.56
TBPT,defi,0.025,38.7
TBPT,defi,0.05,39.11
TBPT,defi,2,70 !45
TBPLOT,MISO,1
!*
K,1,0,0       !建模、化分网格
K,2,5,0
K,3,5,25
K,4,0,25
A,1,2,3,4
/PNUM,LINE,1
/PNUM,KP,1
LESIZE,1,,,10
LESIZE,3,,,10
LESIZE,2,,,25,2.5
LESIZE,4,,,25,0.4
AMESH,ALL !划分单元       改成体单元是VMESH,ALL
SAVE
!*
/SOLU! 进入求解器
TUNIF,20       !定义初始温度
LSEL,S,,,2
NSLL,,1
SF,ALL,CONV,1E-5,1200
!NSEL,S,LOC,X,5       ! 也可以SFL,2,CONV,1E-5,1200
!SF,ALL,CONV,1E-5,1200 !在2号线节点上施加对流换热载荷
ANTYPE,TRANS  !设置为瞬态分析类型 !TIMINT,OFF  关掉时间积分
KBC,1       ! 设置为阶跃加载方式
OUTRES,,ALL !  定义结果输出
TOFFST,273 ! 设置温度偏移量
ALLSEL,ALL
AUTOTS,ON    !  打开自动时间开关
DELTIM,50,50,100
TIME,1500    ! 定义求解时间,最后温度874℃
SOLVE
FINISH
!*
/POST1          ! 进入通用后处理
/DSCALE,1,1.0 ! 设置显示比例
SET,LAST       ! 读取最后载荷步文件
PLNSOL,TEMP,,0,  ! 显示温度分布云图
! 第二步，进行结构场分析
FINISH
/FILNAME,relashen004,0
/PREP7
EPLOT
LSCLEAR,ALL  ! 清除温度场载荷    DDEL,ALL  !删除温度载荷
ETCHG,TTS ! 将温度场单元转化为结构场单元，PLANE55改为PLANE42 ，77-82
ET,1,VISCO106 ! 将单元类型1更改为VISCO106大变形分析单元
KEYOPT,1,3,1  ! 更改分析类型为轴对称
KEYOPT,1,5,0
KEYOPT,1,6,0
KEYOPT,1,7,0
TREF,610       ! 定义参考温度
NSEL,S,LOC,Y,0
D,ALL,UY,0  ! 施加下面Y向约束
NSEL,S,LOC,X,0
D,ALL,UX,0  ! 施加对称约束
NSEL,S,LOC,Y,25
D,ALL,UX,0
D,ALL,UY,5
!F,ALL,FY,10  ! 施加上面力的约束，改为按位移速度加载力的方式
ALLSEL,ALL
FINISH
!*
/SOLU  ! 进入求解器
LDREAD,TEMP,,,1500, ,'relashen003','rth','' ! 读取温度场分析结果
ANTYPE,0 !TRANS !  设置为瞬态分析选项
!KBC,0 !  斜坡式位移速度加载力载荷方式
!  VELY,0.5  ! 速度边界条件输入使用的标签
NLGEOM,1    !  设置为大变形分析
DELTIM,.01,.001,.2 ! 定义时间子步
OUTRES,ERASE
OUTRES,ALL,ALL  ! 设置输出选项
TIME,2! 定义求解时间
! CNVTOL,F,10000,0.00001,2
! cnvtol,f,5000,0.0005,0    !定义力的收敛准则
! cnvtol,u,10,0.001,2       ! 定义位移的收敛准则
ALLSEL,ALL
SOLVE
!*
/POST1
SET,LAST
PLNSOL,S,EQV,0,1.0  ! 显示等效应力分布云图
/EXPAND,27,AXIS,,,10  ! 设置三维周期扩展选项
PLNSOL,S,EQV,0,1.0
/EXIT,NOSAV ! 退出ANSYS

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