关于ansys14.5的空间桁架

懒趴趴的熊

初学ansys，各种不懂。想做一个空间桁架受力分析，然后代码写了，导入ansys后加载，实常数，单元类型，材料属性都定义了，就是不求解，也查不到错，求大神们指教T^T
8 F. {7 J# m5 e/ R问题是这样的：
* E* A9 v* Z  A- ?& ]) v) x# ~线L1，L9受Y负方向的均布载荷1000N/m，关键点7,15,19全约束，受重力场的影响下看它的变形和应力。
6 L* ]1 U8 t" v9 k6 M这个是我写的APDL代码
!桁架分析
FINISH$/CLEAR$/PREP7
!方铝截面
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
: W# d+ m0 `! d! {; pMP,DENS,1,2900
SECTPYE,1,BEAM,HREC
& N0 k5 U( T. _9 H# C5 jSECDATA,0.02,0.02,0.0012,0.0012,0.0012,0.0012
: Y* y6 I5 S8 X- V!桁架线体模型
/ w% G8 b1 \" s: N5 Q1 R% B% D/ YK,1$K,2,0.140$K,3,0.360$K,4,0.680$K,5,0.930$K,6,1
  G: o1 T& E3 ~3 _4 v# YK,7,0.680,-0.150$K,8,0.680,-0.120
L,1,2$L,2,6$L,4,7$L,2,7$L,5,7
) ~) H% B8 n# h; ]K,9,0,0,-0.360$K,10,0.360,0,-0.360$K,11,1,0,-0.360
6 \' v' R: ?4 v& @. LK,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$K,16,0.680,-0.120,-0.360
) \4 ~7 }. Y8 H: Y! m) a- X% rL,1,9$L,3,10$L,6,11$L,9,12$L,12,11$L,13,15
L,3,10$L,12,15$L,14,15
+ r( J9 B& v( D0 }) Q  JL,8,16
K,17,0.356,-0.060$K,18,0.356,-0.060,-0.360
2 M) F& o9 N$ P, y, A/ f% nL,17,18
+ q# E( J, X8 e, _K,19,1,0,-0.180
!分网
LESIZE,ALL,,,10
LMESH,ALL
0 P4 d5 f" J: eFINISH

8 t  P/ [2 A3 a& M; Z7 h究竟是ansys14的BEAM单元的问题还是我自己的问题，反正我就是不能用梁单元在ansys里求解。用solid95单元的话，这个结构分网困难，难以计算，简化就不求解，求给位大神指点，小弟感激不尽T^T
在线急等
& c& M  H0 V( h