ADINAFocused

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Excellence模型文件：地表坐標(biāo).txt；地層坐標(biāo)1.txt；地層坐標(biāo)2.txt；地層坐標(biāo)3.txt；地層坐標(biāo)4.txt；地層坐標(biāo)5.txt（坐標(biāo)文件）地表面.txt；地層面1.txt；地層面2.txt；地層面3.txt；地層面4.txt；地層面5.txt（面構(gòu)成文件）00_采空區(qū)開(kāi)挖模型.in；（總命令流文件）01_建立地層模型.in；02_建立采空區(qū)模型.in；03_定義邊界條件及荷載.in；04_定義材料單元組及劃分網(wǎng)格.in；05_定義采空區(qū)單元生死.in（分步命令流文件）采空區(qū)開(kāi)挖分析----GlueMesh的應(yīng)用ADINA技術(shù)部?1ADINA**MASTER

ANALYSIS=STATIC

AUTOMATI=ATS

INSITU-D=YES*KINEMATICS

DISPLACE=large

INCOMPAT=no*ITERATION

METHOD=FULL-NEWTON

LINE-SEA=YES

MAX-ITER=50*PORTHOLE

SAVEDEFA=YES

FORMATTE=NO

INPUT-DA=1

DISPLACE=YES

VELOCITI=NO

ACCELERA=NO

TEMPERAT=NO*TIMESTEP

NAME=DEFAULT@CLEAR1

0.1***read

01_建立地層模型.in*read

02_建立采空區(qū)模型.in*read

03_定義邊界條件及荷載.in*read

04_定義材料單元組及劃分網(wǎng)格.in*read

05_定義采空區(qū)單元生死.in***ADINA

OPTIMIZE=YES

FILE="01_Initial-Stress.dat"*database

save

01_Initial-Stress.idb

prompt=no**00_采空區(qū)開(kāi)挖模型.in命令流文件Focused

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Excellence求解設(shè)置分別讀入in命令流文件生成初始地應(yīng)力的dat求解文件及idb模型文件ADINA**不使用低速動(dòng)力算法則無(wú)法計(jì)算收斂***MASTER

MODEX=RESTART

TSTART=0.1*AUTOMATIC

TIME-STEPPING

MAXSUBD=100

RESPS=YES

RESFAC=0.005*TIMESTEP

NAME=DEFAULT@CLEAR110.11.0****database

save

02_Construction.idb

prompt=no*ADINA

OPTIMIZE=YES

FILE="02_Construction.dat"***求解設(shè)置Focused

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Excellence生成開(kāi)挖采空區(qū)的dat求解文件及idb模型文件對(duì)于采空區(qū)開(kāi)挖,由于煤層自穩(wěn)性差且無(wú)支護(hù),如果按照正常計(jì)算的話則無(wú)法收斂,此時(shí)需打開(kāi)靜力計(jì)算的低速動(dòng)力算法選項(xiàng)。00_采空區(qū)開(kāi)挖模型.in命令流文件（續(xù)）ADINA打開(kāi)低速動(dòng)力算法對(duì)于采空區(qū)開(kāi)挖,由于煤層自穩(wěn)性差且無(wú)支護(hù),如果按照正常計(jì)算的話則無(wú)法收斂,此時(shí)需打開(kāi)靜力計(jì)算的低速動(dòng)力算法選項(xiàng)。對(duì)于一些靜力計(jì)算難以收斂或者是材料破壞的問(wèn)題,此時(shí)可采用Low-SpeedDynamicDamping方式控制收斂；Dampingfactor會(huì)直接控制收斂過(guò)程,damping帶來(lái)的振蕩過(guò)濾后才是需要的平衡狀態(tài)；Focused

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ExcellenceFocused

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ExcellenceADINA有限元模型采空區(qū)Focused

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ExcellenceADINA有限元模型采空區(qū)Focused

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ExcellenceADINA網(wǎng)格連續(xù)性的控制對(duì)于采空區(qū)上下土層而言,其可以進(jìn)行映射網(wǎng)格劃分；對(duì)于采空區(qū)而言,其必須進(jìn)行多次切割才能劃分映射網(wǎng)格,故在此僅進(jìn)行四面體網(wǎng)格劃分,網(wǎng)格與上下土層不進(jìn)行連續(xù)性控制,采空GlueMesh的方式與上下土層的網(wǎng)格進(jìn)行網(wǎng)格連接。Focused

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ExcellenceADINAGlueMesh網(wǎng)格此處兩個(gè)面不能透視,也即網(wǎng)格不連續(xù),此滿足GlueMesh對(duì)網(wǎng)格的要求ADINA網(wǎng)格連續(xù)性控制的技巧對(duì)煤層及采空區(qū)進(jìn)行網(wǎng)格劃分時(shí),可把煤層和采空區(qū)的Body體做成一個(gè)Domain,這樣的話在對(duì)煤層及采空區(qū)的Body進(jìn)行網(wǎng)格劃分時(shí)選擇僅對(duì)Domain進(jìn)行節(jié)點(diǎn)檢查,這樣就可以控制網(wǎng)格在煤層及采空區(qū)是連續(xù)的,在與其它土層相鄰處網(wǎng)格是不連續(xù)的。Focused

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ExcellenceADINA01_Initial-Stress模型的Z方向位移云圖Focused

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ExcellenceADINA01_Initial-Stress模型的最大主壓應(yīng)力云圖Focused

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ExcellenceFocused

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ExcellenceADINA02_Construction模型的初始地應(yīng)力場(chǎng)階段的Z方向位移云圖初位移得到了清零Focused

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ExcellenceADINA02_Construction模型的初始地應(yīng)力場(chǎng)階段的最大主壓應(yīng)力云圖初應(yīng)力得到了繼承ADINA02_