關于ansys14.5的空間桁架

懶趴趴的熊

初學ansys，各種不懂。想做一個空間桁架受力分析,，然后代碼寫了,，導入ansys后加載,，實常數(shù),，單元類型，材料屬性都定義了,，就是不求解,，也查不到錯，求大神們指教T^T
" U' L+ Q! U2 C; I& \" j問題是這樣的：
線L1,，L9受Y負方向的均布載荷1000N/m,，關鍵點7,15,19全約束，受重力場的影響下看它的變形和應力,。
這個是我寫的APDL代碼
& Q. Q: u. j) p5 [5 p# x!桁架分析
FINISH$/CLEAR$/PREP7
!方鋁截面
ET,1,BEAM4
R,1,0.902E-4,0.534E-8,0.534E-8,0.02,0.02
MP,EX,1,6.9E10
MP,PRXY,1,0.33
MP,DENS,1,2900
6 u7 i* J. Z4 c# h2 w# vSECTPYE,1,BEAM,HREC
SECDATA,0.02,0.02,0.0012,0.0012,0.0012,0.0012
!桁架線體模型
5 Y/ h' D* N( O' ?K,1$K,2,0.140$K,3,0.360$K,4,0.680$K,5,0.930$K,6,1
& F7 H' n! u, i# w9 c& JK,7,0.680,-0.150$K,8,0.680,-0.120
L,1,2$L,2,6$L,4,7$L,2,7$L,5,7
K,9,0,0,-0.360$K,10,0.360,0,-0.360$K,11,1,0,-0.360
K,12,0.140,,-0.360$K,13,0.680,0,-0.360$K,14,0.930,0,-0.360
K,15,0.680,-0.150,-0.360$K,16,0.680,-0.120,-0.360
+ C- f  N* W; M+ E7 c# ~  E; d) hL,1,9$L,3,10$L,6,11$L,9,12$L,12,11$L,13,15
L,3,10$L,12,15$L,14,15
L,8,16
K,17,0.356,-0.060$K,18,0.356,-0.060,-0.360
2 D0 c, `0 J" q/ F' g. M$ OL,17,18
K,19,1,0,-0.180
# t1 r6 Q2 F5 L( L!分網(wǎng)
LESIZE,ALL,,,10
LMESH,ALL
FINISH

究竟是ansys14的BEAM單元的問題還是我自己的問題,，反正我就是不能用梁單元在ansys里求解。用solid95單元的話,，這個結構分網(wǎng)困難,，難以計算，簡化就不求解,，求給位大神指點,，小弟感激不盡T^T
# y/ a% S) _" _' p1 |在線急等
5 u: v2 Y, j0 \  j$ @$ `  ]