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
& K. m1 }" q8 Y5 O4 d+ }问题是这样的：
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。
, v/ W# B* ]$ @: J这个是我写的APDL代码
* }% c7 J+ m- l& w$ f!桁架分析
FINISH$/CLEAR$/PREP7
!方铝截面
0 {1 C8 F0 W% b) dET,1,BEAM4
R,1,0.902E-4,0.534E-8,0.534E-8,0.02,0.02
. g4 W' {9 a) B$ w. n; Y* P8 }MP,EX,1,6.9E10
5 U9 I* e7 p% SMP,PRXY,1,0.33
MP,DENS,1,2900
# S" r# G7 o: lSECTPYE,1,BEAM,HREC
: v' J+ Z% G0 i+ nSECDATA,0.02,0.02,0.0012,0.0012,0.0012,0.0012
!桁架线体模型
K,1$K,2,0.140$K,3,0.360$K,4,0.680$K,5,0.930$K,6,1
K,7,0.680,-0.150$K,8,0.680,-0.120
L,1,2$L,2,6$L,4,7$L,2,7$L,5,7
; h6 D6 i* C, k% g- N* M4 mK,9,0,0,-0.360$K,10,0.360,0,-0.360$K,11,1,0,-0.360
# A% h1 A! f, F( |. u* f6 CK,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$K,16,0.680,-0.120,-0.360
L,1,9$L,3,10$L,6,11$L,9,12$L,12,11$L,13,15
L,3,10$L,12,15$L,14,15
' ~0 C0 T- h, r0 y+ n: H6 eL,8,16
) j; N: n, P# i0 S$ k+ k* f) tK,17,0.356,-0.060$K,18,0.356,-0.060,-0.360
L,17,18
K,19,1,0,-0.180
& L9 G2 u" i& m; O!分网
+ Z& b: l# \# ?2 r- }LESIZE,ALL,,,10
, I8 e3 T6 P+ P# [4 nLMESH,ALL
FINISH
# ?4 {3 ~# ~) S2 f7 M" `
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