使用了一下杆單元：
finish
/clear
/filname,problem 2
/prep7
m_F = 200
et,1,link180 !solid45實體單元，編號爲1
r,1,0.25, ,0
mp,ex,1,2.1e11 !彈性模量
mp,prxy,1,0.3 !泊松比
!建模
!建立節點
n,1,0,0$n,2,2,0$n,3,3,0$n,4,4,0$n,5,6,0
n,7,2,-1$n,8,4,-1
!連接節點，創建單元
type,1
mat,1
real,1
e,1,2$e,2,3$e,3,4$e,4,5$e,1,7$e,2,7$e,3,7$e,3,8$e,4,8
e,5,8$e,7,8
!施加位移約束
d,1,all
d,5,uy
!施加載荷
f,1,fy,-m_F$f,3,fy,-m_F$f,4,fy,-m_F$f,5,fy,-m_F
f,2,fy,-m_F$f,2,fx,m_F
!分析計算
/solu
allsel
solve
!看下變形圖
/post1
plnsol,u,sum,0,1
