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最近在学习FISH语言自定义本构模型, C:\Program Files\Itasca\flac500\gui\fishlib\ConstitutiveModels
有个Ducan-Chang模型的压缩试验,有一行命令行看不太懂,特来请教下各位朋友,命令行如下:
; mduncan.dat
config axi
g 5 20
gen 0 0 0 1 .25 1 .25 0
ca mduncan.fis
; --- model and properties ---
mo m_duncan
prop den .00202
prop d_pa=1.0584 d_k=700 d_n=0.37 d_rf=0.8 d_ku=1820
prop d_kb=280 d_m=0.19
prop d_coh=0.31 d_fric=33
; --- initialisation ---
ini sxx -2 syy -2 szz -2
set d_ms3=2.
ini_duncan
; --- boundary conditions ---
fix y j=1
fix y j=21
ini yv -0.5e-6 j=21
ini yv 0.5e-6 j=1
apply pres 2 i=6
; --- fish functions ---
def s1_s3
_area=pi*x(igp,jgp)^2
sum=yforce(1,jgp)*x(2,jgp)*0.25
loop i (2,igp)
sum=sum+yforce(i,jgp)*x(i,jgp)
end_loop
sigmav=2*pi*sum/_area
s1_s3=sigmav-2.0
s1_s3_ult=7.4076
trans_s1_s3=ev/(sigmav-2.0) (什么含义???????)
end
def ev
ev=(ydisp(3,1)-ydisp(3,21))/(y(3,21)-y(3,1))
end
; --- histories ---
hist nstep 20
hist s1_s3
hist s1_s3_ult
hist trans_s1_s3
hist ev
hist unbal
hist syy i=3 j=10 |
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