温度载荷，联合约束方程求轴力。(材力上册55页例题)

yujb025

在图中，设横梁ACB的变形可以省略不计(即设ACB为刚体)；钢杆AD的横截面面积A1=100mm^2，长度L1=330mm，弹性模量E1=200GPa，线膨胀系数ALPX1为12.5x10-61/0C；钢杆BE的相应数据分别是，A2=200mm^2，E2=100GPa，ALPX2=16.5x10-61/0C。如温度升高30度，求两杆的轴力

yujb025

/prep7
et,1,1
mp,reft,1,0
mp,ex,1,2e5
mp,prxy,1,0.3
mp,alpx,1,12.5e-6
r,1,100
mp,reft,2,0
mp,ex,2,1e5
mp,prxy,2,0.3
mp,alpx,2,16.5e-6
r,2,200
n,1,
n,34,0,330
fill
n,41,390
n,63,390,220
fill
type,1
mat,1
real,1
e,1,2
egen,33,1,1
type,1
mat,2,
real,2
e,41,42
egen,22,1,34
ce,1,0,1,uy,150,41,uy,240
/solu
d,all,ux,0
d,34,uy,0
d,63,uy,0
bf,all,temp,30
alls
solve
/post1
prrsol,fy