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- 1970-1-1
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在论坛里搜索了这个问题,而且是个比较基础的问题,但还是不明白。
问题就是:有两次静态的分析,第二次静态分析是以第一次静态分析的结果为基础。但发现如果只把两次静态分析写在一起,第二次分析还是以初始结构为开始的,第一次的结果没有考虑上。
希望高手能帮忙。
附命令流,请指教:
FINISH
/CLEAR,NOSTART ! Clear all the data
!*
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
/PREP7
! Creat keypoints
K,1,0,0,0,
K,2,2.5e-3,0,0,
K,3,2.5e-3,2.5e-3,0,
K,4,0,2.5e-3,0,
! Create lines from keypoints
LSTR, 1, 2
LSTR, 2, 3
LSTR, 3, 4
LSTR, 4, 1
! Create area
AL, 1, 2, 3, 4, ! Create area based on lines
! Create volumes
VEXT,1, , ,0,0,18e-3,,,, ! Create volume by extrude area 1 along z direction
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Mesh
ET,1,SOLID185 ! Element type
! Material propeties
MPTEMP,,,,,,,, ! Material 1 = muscle
MPTEMP,1,0
TB,HYPE,1,1,1,OGDE ! Hyperelastic material
TBDATA,,1e3,20,0,,,,
MPDATA,DENS,1,,1.03e3 ! Density of of material 1
!* Assign material properties
VSEL, , , , 1 ! Select volume 1
VATT, 1, , 1, 0 ! Assign material 1 to volume 1
ALLSEL,ALL ! Select everything
! Mesh
ESIZE,0.9e-3 ! Element size
VSWEEP,1 ! Mesh by sweep of volume 1
FINISH
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
/SOLU
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! First step
ANTYPE,0 ! Analysis type: static
ASEL,S, , ,1 ! Select area 1
NSLA,S,1 ! Select all the nodes on selected areas
D,ALL, ,0, , , ,ALL, , , , , ! Fix the nodes on selected areas
ASEL,S, , ,2 ! Select area 2
NSLA,S,1 ! Select all the nodes on selected areas
SF,ALL,PRES,-1e4 ! Apply the pressure
ALLSEL,ALL ! Select everything
NLGEOM,1 ! Enable large deformation
NSUBST,100, ! Number of this substep is 100
CNVTOL,F,1,1.0E-2
AUTOTS,1 ! Automatic time stepping is on
NEQIT,100000 ! Maximum number of equilibrium iterations = 1000
SOLVE
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! Second step
! ANTYPE,0
ASEL,S, , ,1 ! Select area 1
NSLA,S,1 ! Select all the nodes on selected areas
D,ALL, ,0, , , ,ALL, , , , , ! Fix the nodes on selected areas
ASEL,S, , ,2 ! Select area 2
NSLA,S,1 ! Select all the nodes on selected areas
D,ALL, ,0, , , ,ALL, , , , , ! Fix the nodes on selected areas
ALLSEL,ALL ! Select everything
NLGEOM,1 ! Enable large deformation
NSUBST,100, ! Number of this substep is 100
CNVTOL,F,1,1.0E-2
AUTOTS,1 ! Automatic time stepping is on
NEQIT,100000 ! Maximum number of equilibrium iterations = 1000
SOLVE
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