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1、现在用 ANSYS 做一个平台的管节点疲劳计算程序如下（前面的大部分略去）：*dim,mk,array,1,5, *set,mk(1,1,1),2000000 *set,mk(1,2,1),1000000 *set,mk(1,3,1),800000 *set,mk(1,4,1),1480000 *set,mk(1,5,1),11380000 /PREP7 ET,1,BEAM188 ET,2,PIPE59 ET,3,PIPE16 ET,4,COMBIN14 MPTEMP, MPTEMP,1,0 MPDATA,EX,1,2.1E11 MPDATA,PRXY,1,0.3 MPDATA,DENS,1,
2、7850 SECTYPE, 1, BEAM, CTUBE, b1, 0 SECOFFSET, CENT SECDATA,2.03,2.075,0,0,0,0,0,0,0,0 SECTYPE, 2, BEAM, CTUBE, b2, 0 SECOFFSET, CENT SECDATA,1.005,1.05,0,0,0,0,0,0,0,0 SECTYPE,3,TAPER, , SECDATA, 1,(8*3*0.5)/3,0,8.5, SECDATA, 2,(8*3*0.5)/3,0,85, R,1, , , , , , , R,2,2.572,0.1, , , , , R,3,2.5,0.028
3、, , , , , R,4,1,0.02,0,0,0,0, R,5,1.5,0.025,0,0,0,0, R,6,2.0,0.025,0,0,0,0, R,7,4.15,0.045,0,0,0,0, k,1,(8*3*0.5)/3,0,8.5, k,2,(8*3*0.5)/3,0,85, k,3,(8*3*0.5)/3,0,-6, k,4,0,8,-55, k,5,0,8,-7, k,6,0,8,-6, k,7,0,8,-5, k,8,0,8,-3, k,9,0,8,2.2, k,10,8*3*0.5,0,-55, k,11,8*3*0.5,0,-7,k,12,8*3*0.5,0,-6, k,
4、13,8*3*0.5,0,-5, k,14,8*3*0.5,0,-3, k,15,8*3*0.5,0,2.2, k,16,0,-8,-55, k,17,0,-8,-7, k,18,0,-8,-6, k,19,0,-8,-5, k,20,0,-8,-3, k,21,0,-8,2.2, k,22,(8*3*0.5)/3,0,-3, k,23,(8*3*0.5)/3,0,2.2, . /solu solve finish /post1 fp,1,100,200,500,1000,1500,2000 fp,7,10000,100000,1000000,2000000,3000000,5000000 f
5、p,13,6000000,7000000,8000000,9000000,10000000,11000000 fp,19,12000000,15000000 fp,21,150,120,110,100,95,90 fp,27,85,80,75,70,65,60 fp,33,55,50,45,40,35,30 fp,39,29,25 save *set,n_num,node(4.6188,0,2.2) fl,1,n_num fsnode,n_num,1,1 !取出指定应力位置的应力值fs,n_num,1,2,1,0,0,0,0,0,0 fe,1,10000,2 ftcalc,1 当运行到“fsnode,n_num,1,1 !取出指定应力位置的应力值“这一步的时候总是出现错误说“ 该点的应力不可以获得“,请教各位指导迷津! 如果王老师看见帖子希望帮忙分析下ftcalc,1 !进行疲劳寿命使用系数的计算 ansys 计算疲劳功能是不太行的,ansys 中的疲劳计算，只能针对某一个节点计算，如果要 想得到关于疲劳失效的应力-应变图就不行了。你应该安装 ansys 的疲劳模块.用疲劳模块 对管节点进行疲劳分析,ANSYS 的疲劳模块功能是很强大的.ANSYS 疲劳模块安装后在 ANSYS 中调用就可以方便的使用了,如下图
