Ansys作业相变分析报告.docx

1、Ansys作业相变分析报告Ansys作业相变分析步骤：（1）定义单元类型选择Thermal Solid和Quad4 node5单元，单元属性选择Axisymmetric；定义材料属性：设置水的密度、导热率以及焓参数。水的焓参数变化曲线（2）创建几何模型，划分有限元网格（3）施加初始温度，施加对流载荷（4）设置求解选项，显示沿半径方向的温度分布（5）显示温度场分布云图(6)显示冰和水的区域10分钟后冰水分解示意图步骤：（1）定义单元类型，选择Thermal Solid、Quad 4node55和Brick 20node90单元. 定义材料属性：导热系数、密度以及焓变参数等。（2）创建几何模型，划

2、分有限元网格（3）施加温度载荷（4）设置求解选项，然后求解，显示60分钟后的温度分布云图（5）计算冰完全融化的时间第7827秒后温度场分布等值线云图从图中可以看出，7827秒后的最低温度为-0.001732，接下来我们用相同的方法查看第7828秒的温度分布等值线云图。从图中可以看出，7828秒后的最低温度为0.0025，表明冰莹完全融化。所以在第7828秒冰完全融化为水。（6）绘制A点温度随时间变化曲线A点温度随时间变化曲线（7）绘制B点温度随时间变化曲线B点温度随时间变化曲线（1）定义单元类型，选择Thermal Solid、Quad 4node 55单元； 定义材料属性：导热系数、砂模密度

3、、砂模比热以及温度、焓变参数。（2）创建几何模型（3）划分网格（4）施加温度载荷（5）求解查看结果读入最后一步的分析结果，查看600秒后铸件和砂模的温度等值线云图600秒后铸件和砂模的温度等值线云图600秒后砂模的温度等值线云图命令流文件：finish/clear/filname,thermal/title,haha/prep7et,1,55mp,kxx,1,0.35mp,dens,1,1520mp,c,1,816MPTEMP, MPTEMP,1,25 MPTEMP,2,1533 MPTEMP,3,1595 MPTEMP,4,1670 MPDATA,KXX,2,28.8 MPDATA,KXX,

4、2,31.2 MPDATA,KXX,2,24.5 MPDATA,KXX,2,24.5 MPTEMP, MPTEMP,1,25 MPTEMP,2,1533 MPTEMP,3,1595 MPTEMP,4,1670 MPDATA,ENTH,2,7.8886e-31 MPDATA,ENTH,2,7.5e9MPDATA,ENTH,2,9.6e9MPDATA,ENTH,2,1.1e10 k,1,0.01,0.01k,2,0.01,0.04k,3,0.02,0.04k,4,0.02,0.03k,5,0.08,0.03k,6,0.08,0.04k,7,0.09,0.04k,8,0.09,0.01k,9,0.0

5、8,0.01k,10,0.08,0.02k,11,0.02,0.02k,12,0.02,0.01*DO,I,1,11,1L,i,i+1*ENDDOL,1,12AL,allrectng,0,0.1,0,0.05aovlap,all/pnum,area,1aplotNUMCMP,AREA esize,0.002mat,2amesh,1mat,1amesh,2/pnum,area,0/REPLOTfinishsave/soluantype,4TRNOPT,FULL LUMPM,0 TIME,0.01 AUTOTS,-1 DELTIM,0.01,1 KBC,0 TSRES,ERASE TIMINT,0

6、TINTP,0.005,-1,0.5,-1, asel,s,1nsla,s,1d,all,temp,1670allselasel,s,2nsla,s,1d,all,temp,25allsellsel,s,13lsel,a,14lsel,a,15lsel,a,16nsll,s,1sfl,all,conv,65,100allselsolve/SOLLUMPM,0 TIME,600DELTIM,3,3,10KBC,0.0OUTRES,ERASEOUTRES,ALL,ALL TIMINT,1 ddele,all,tempsolve/POST1 SET,LAST PLNSOL, TEMP, 0finish