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filename,contact_thermal/title,contact_thermalexample/prep7et,1,13,4,,1!选择直接耦合单元PLANE13，单元自由度为ux,uy,temp!定义为轴对称et,2,48!定义结构接触单元keyopt,2,1,1!设定接触单元的相应选项keyopt,2,2,1keyopt,2,7,1r,2,2e11,0,0.0001,,,0.1!定义接触单元实常数mp,ex,1,2e11!定义管材结构及热属性mp,alpx,1,5e-5mp,kxx,1,10mp,dens,1,7880mp,c,1,500rect,0.11,0.12,0,0.02!建模rect,0.121,0.131,0,0.02amesh,allnsel,s,loc,x,0.11!将内管内壁的X方向位移及温度耦合cp,1,ux,allcp,2,temp,allnsel,s,loc,x,0.12!将内管外壁的X方向位移及温度耦合cp,3,ux,allcp,4,temp,allnsel,s.loc,x,0.121!将外管内壁的X方向位移及温度耦合cp,5,ux,allcp,6,temp,allnsel,s,loc,x,0.131!将外管外壁的X方向位移及温度耦合cp,7,ux,allcp,8,temp,allnsel,s,loc,y,0.02!将内管顶部节点的Y方向位移及温度耦合nsel,r,loc,x,0,0.12cp,9,uy,allnsel,s,loc,y,0.02!将外管顶部节点的Y方向位移及温度耦合nsel,r,loc,x,0.121,0.131cp,10,uy,allnsel,s,loc,x,0.12!创建接触单元cm,cont,nodensel,s,loc,x,0.121cm,targ,nodetype,2real,2gcgen,cont,targ,3/soluantype,trans!瞬态分析tunif,20!初始平均温度tref,20!参考温度sfl,4,conv,300,,300!内管内壁对流边界sfl,6,conv,10,,20!外管外壁对流边界nsel,s,loc,y,0!约束所有底边单元的Y向位移d,all,uy,0time,180!载荷步时间deltime,10,5,15!定义时间步长outres,all,allkbc,1autots,on!自动时间步长allselsolve!求解/post1plnsol,temp!显示温度分布plnsol,s,eqv!显示等效应力