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发表于 2007-9-2 17:19:44
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来自 重庆沙坪坝区
将网格密度加大(分为50份),命令流:
;------------------------------------------------------------------------
;均布荷载作用下的简支梁
;跨度L=10 m 均布荷载q=8 kN/m
;跨中弯矩理论解M=qL^2/8=8*10^2/8=100 kN.m 剪力V=qL/2=8*10/2=40 kN
;用FLAC 5.0建立模型:将梁等分为10段,11个节点(node),
;将均布荷载折算为集中力(节点力) ∵Fy*n=qL ∴Fy=qL/n=8*10/51=1.5686 kN
;-------------------------------------------------------------------------
;几何模型
struct node 1 0 0
struct node 2 10 0
struct beam begin node 1 end node 2 seg 50 prop 1001
struct prop 1001 e 2e11 area 0.0060 I 2.0e-4
;边界约束
struct node 1 fix x
struct node 1 fix y
struct node 2 fix y
;荷载施加
struct node 1 load 0,-1.5686,0
struct node 2 load 0,-1.5686,0
struct node 3 load 0,-1.5686,0
struct node 4 load 0,-1.5686,0
struct node 5 load 0,-1.5686,0
struct node 6 load 0,-1.5686,0
struct node 7 load 0,-1.5686,0
struct node 8 load 0,-1.5686,0
struct node 9 load 0,-1.5686,0
struct node 10 load 0,-1.5686,0
struct node 11 load 0,-1.5686,0
struct node 12 load 0,-1.5686,0
struct node 13 load 0,-1.5686,0
struct node 14 load 0,-1.5686,0
struct node 15 load 0,-1.5686,0
struct node 16 load 0,-1.5686,0
struct node 17 load 0,-1.5686,0
struct node 18 load 0,-1.5686,0
struct node 19 load 0,-1.5686,0
struct node 20 load 0,-1.5686,0
struct node 21 load 0,-1.5686,0
struct node 22 load 0,-1.5686,0
struct node 23 load 0,-1.5686,0
struct node 24 load 0,-1.5686,0
struct node 25 load 0,-1.5686,0
struct node 26 load 0,-1.5686,0
struct node 27 load 0,-1.5686,0
struct node 28 load 0,-1.5686,0
struct node 29 load 0,-1.5686,0
struct node 30 load 0,-1.5686,0
struct node 31 load 0,-1.5686,0
struct node 32 load 0,-1.5686,0
struct node 33 load 0,-1.5686,0
struct node 34 load 0,-1.5686,0
struct node 35 load 0,-1.5686,0
struct node 36 load 0,-1.5686,0
struct node 37 load 0,-1.5686,0
struct node 38 load 0,-1.5686,0
struct node 39 load 0,-1.5686,0
struct node 40 load 0,-1.5686,0
struct node 41 load 0,-1.5686,0
struct node 42 load 0,-1.5686,0
struct node 43 load 0,-1.5686,0
struct node 44 load 0,-1.5686,0
struct node 45 load 0,-1.5686,0
struct node 46 load 0,-1.5686,0
struct node 47 load 0,-1.5686,0
struct node 48 load 0,-1.5686,0
struct node 49 load 0,-1.5686,0
struct node 50 load 0,-1.5686,0
;模型检查
plo hold struc node
copy node.bmp
;求解设置
set srat=10e-10
solve
plo hold struc sdisp
plo hold struc beam shear fill
copy shear.bmp
plo hold struc beam mome fill
copy mome.bmp |
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