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最近一直被一个问题困扰:
计算完成后使用“plot sel cable foce”显示结果不尽人意
应该在锚索轴向大都是tension,而不应是compression;
使用命令“plot contour displacemnet”显示结果看只是计算了一根锚杆,另一根呢?
以下是命令流:
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new
gen zone brick p0 0 0 0 p1 2 0 0 p2 0 0 -0.4 p3 0 1.3 0 size 20 4 13
;
mo mohr
pro bulk 2.68e7 shear 2.92e7 fric 20 coh 2.3e4 ten 3e3
ini dens 2450
;set grav 0 -9.81 0
;set large
;
;ini syy -312448.5 grad 0 24034.5 0
;ini szz -34716.5 grad 0 2670.5 0
;ini sxx -34716.5 grad 0 2670.5 0
;
fix x range x=-0.001 0.001
fix x range x=1.999 2.001
fix z range z=-0.001 0.001
fix z range z=-0.4001 -0.399
fix x y z range y=-0.001 0.001
;
;set mech ratio 1.0e-5
;solve
;sav ini_0.sav
;
;pause
;位移和速度归零
;ini xdisp 0
;ini ydisp 0
;ini zdisp 0
;ini xvel 0
;ini yvel 0
;ini zvel 0
;
;---------------------------------------------------------------------------------------------------------------
;下面设置自由式锚索(Free_Anchored_Cable)
;;---------------------------------------------------------------------------------------------------------------
def constant
pc=2 ;(自由式锚杆锚固段剖分数)
a1x=1.01191-0.0001
a1y=1.3-0.08
a3x=1.01191-0.0001-0.7*cos(17*degrad)
a3y=1.3-0.08-0.7*sin(17*degrad)
a2x=1.01191-0.0001-0.54*cos(17*degrad)
a2y=1.3-0.08-0.54*sin(17*degrad)
; a2z=-0.08-0.08*(m-1)
end
constant
;
;生成第1根锚杆
sel cable id=1 begin a3x,a3y,-0.08 end a2x,a2y,-0.08 nseg=pc
sel cable id=1 begin a2x,a2y,-0.08 end a1x,a1y,-0.08 nseg=1
sel cable id=1 prop den=8960,emod=1.40e11,xcarea=4.91e-6 &
gr_coh=08.0e8,gr_k=4.1307e5,gr_per=9.42e-3,yt=2.1e8 range cid 1,2
sel cable id=1 prop den=8960,emod=1.40e11,xcarea=4.91e-6 &
gr_coh=1,gr_k=1,gr_per=9.42e-3,yt=2.1e8 range cid 3
sel delete link id=4
;生成自由段端点与岩体的固结点(模拟垫墩效应)
sel link id=15 4 target zone
sel link attach xdir=rigid xrdir=rigid ydir=rigid yrdir=rigid &
zdir=rigid zrdir=rigid
sel link constit nydeform 6 area=1.0 k=2.84e12 &
ycomp=4.17e3 ytens=4.17e3 range id=15
sel cable id=1 pretension=6.67 range cid=3
;
;生成第2根锚杆
sel cable id=2 begin a3x,a3y,-0.16 end a2x,a2y,-0.16 nseg=pc
sel cable id=2 begin a2x,a2y,-0.16 end a1x,a1y,-0.16 nseg=1
sel cable id=2 prop den=8960,emod=1.40e11,xcarea=4.91e-6 &
gr_coh=08.0e8,gr_k=4.1307e5,gr_per=9.42e-3,yt=2.1e8 range cid 4,5
sel cable id=2 prop den=8960,emod=1.40e11,xcarea=4.91e-6 &
gr_coh=1,gr_k=1,gr_per=9.42e-3,yt=2.1e8 range cid 6
sel delete link id=8
;生成自由段端点与岩体的固结点(模拟垫墩效应)
sel link id=16 8 target zone
sel link attach xdir=rigid xrdir=rigid ydir=rigid yrdir=rigid &
zdir=rigid zrdir=rigid
sel link constit nydeform 6 area=1.0 k=2.84e12 &
ycomp=4.17e3 ytens=4.17e3 range id=16
sel cable id=2 pretension=6.67 range cid=6
;
step 100
save 0.sav
[ 本帖最后由 whutzll 于 2008-11-21 17:05 编辑 ] |
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