当前位置： 首页 > news >正文

在线做家装设计的网站/网络营销seo培训

news 2025/8/2 3:40:56
在线做家装设计的网站,网络营销seo培训,外贸服装商城网站建设,宿迁房产网找房旋转软化与应力刚化 平板旋转 两种单元：shell181，solid185。分析5种情况：静止，绕y-0.1处的x轴转3200rpm，绕y-0.1处的x轴转9600rpm，绕y-0.1处的z轴转3200rpm，绕y-0.1处的z轴转9600rpm。 只提取一…

旋转软化与应力刚化

平板旋转
两种单元：shell181，solid185。分析5种情况：静止，绕y=-0.1处的x轴转3200rpm，绕y=-0.1处的x轴转9600rpm，绕y=-0.1处的z轴转3200rpm，绕y=-0.1处的z轴转9600rpm。
只提取一阶模态频率，因此得到10个结果。
在这里插入图片描述
验证手册指出：平板绕x轴旋转时，应力刚化与旋转软化都影响弯曲模态；绕z轴旋转时旋转软化对弯曲模态的影响可以忽略。
这里的应力刚化与旋转软化都是旋转时的离心力造成的，先进行 nonlinear static analysis ，再进行 linear perturbation modal analysis，计算特征值用的是Block-Lanczos eigensolver。

举个例子：
在这里插入图片描述

一根杆有弹性无质量，一端有一个质量球，绕着一根轴旋转，离心力会把杆拉长，离心力就会变大，这就是旋转软化；但是杆轴向受力使得横向刚度增大，横向弯曲模态频率也就提高，这就是应力刚化。

SHELL181适合分析溥的及中等厚度的板壳结构零件。它一个单元有四个结点，每个结点有六个自由度，即沿X，Y，Z方向的移动自由度和转动自由度。（如果选了“薄膜”选项，则单元只能用移动自由度）。退化“三角形”选项，只能过滤单元化分网中使用。
SHELL181 支持线性，大扭转和大应变，变厚度非线性分析。它既能用完全法也可用缩减法，可用于分布载荷及应力刚化。
SHELL181可用于多层材料模型。板壳建模的精度由剪切变形理论（Mindlin-Reissner shell theory）决定。
在遇到有收敛困难的时候，用SHELL181代替SHELL43单元，该单元详细介绍，请参看ANSYS, In

在这里插入图片描述
solid185单元有8节点，每个节点有三个移动自由度。因此对比上下两个图，y=0处的节点自由度都被约束了，但上图多了黄色的部分是旋转自由度。
在这里插入图片描述

代码

由于有*VWRITE命令，只能批处理运行

/clear
/COM,ANSYS MEDIA REL. 150 (11/8/2013) REF. VERIF. MANUAL: REL. 150
/VERIFY,VM281
/TITLE,VM281,EFFECT OF STRESS STIFFENING AND SPIN SOFTENING ON A ROTATING PLATE
/COM,
/COM, REFERENCE: NASA TECHNICAL MEMORANDUM 89861,PAGE 14,FIGURE 7
/COM,
/COM, =====================================================================
/COM,  MODELING THE PLATE USING 4-NODE STRUCTURAL SHELL ELEMENT (SHELL181)
/COM, ======================================================================
/PREP7
lg = 152.4e-3       ! LENGTH IN METERS 
wd = 50.8e-3        ! WIDTH IN METERS
tk = 2.54e-3        ! THICKNESS IN METERS
K,1,-wd/2,0,0   ! Defines a keypoint.
K,2,+wd/2,0,0
K,3,+wd/2,lg,0
K,4,-wd/2,lg,0
A,1,2,3,4     ! Defines an area by connecting keypoints.
/COM, MATERIAL PROPERTIES OF STRUCTURAL STEEL PLATE
MP,EX,1,2.0e+11   ! 1号材料的弹性模量 
MP,DENS,1,7850    !  1号材料的密度
MP,NUXY,1,0.3      ! 1号材料的泊松比
ET,1,SHELL181       ! 4-NODE STRUCTURAL SHELL ELEMENT
SECTYPE,1,SHELL  ! 定义壳单元截面
SECDATA,tk,1,10,3    ! THICKNESS  厚度 层坐标系相对单元坐标系的角度 积分点
TYPE,1 !设置当前单元
MAT,1 !设置当前材料
SECNUM,1  !设置当前截面
ESIZE,5e-3 !划分单元的长度
AMESH,1 !划分面单元
NSEL,S,LOC,Y,0.0 !选中y=0的所有节点
D,ALL,ALL        ! CONSTRAINING ALL DOF AT BASE
ALLSEL,ALL
CM,PLATE,ELEM       ! FORMING A COMPONENT WITH ALL ELEMENTS
SAVE,SHELL,DB       ! SAVE THE DATABASE
FINISH/COM, ----------------------
/COM, NO ROTATION 静止
/COM, ----------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,MODAL   ! 模态分析
MODOPT,LANB,4       ! EXTRACT 4 MODES USING BLOCK-LANCZOS 
MXPAND,4  !http://blog.sina.com.cn/s/blog_9b0ec2070102z2mu.html
SOLVE
/OUT,
*GET,FREQ1_SH,MODE,1,FREQ    ! *GET Solution Items, Entity = MODE 提取一阶模态频率赋给FREQ1_SH
FINISH
/DELETE,,rst  ! 删除rst文件/COM, --------------------------------------
/COM, PLATE ROTATED ALONG X AXIS AT 3200 RPM 绕x轴3200rpm    模态分析加入了离心力产生的预应力
/COM, --------------------------------------
/OUT,SCRATCH   ! /OUTPUT的Notes
/SOLUTION
ANTYPE,STATIC ! 静力分析
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,3200*pi/30,,,0,OFFSET,0,1,OFFSET,0        ! ROTATING THE PLATE ALONG X AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0 ! 载荷步时间为1
AUTOTS,ON   !  自动载荷步
NSUBS,10,100,1   ! 子步：10步 最少1步 最大100步
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS  预应力模态分析
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA  
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX    重新生成单元矩阵
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ2_SH,MODE,1,FREQ ! *GET Solution Items, Entity = MODE 提取一阶模态频率赋给FREQ2_SH
FINISH
/DELETE,,rst
/DELETE,,rstp/COM, --------------------------------------
/COM, PLATE ROTATED ALONG X AXIS AT 9600 RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,9600*pi/30,,,0,OFFSET,0,1,OFFSET,0        ! ROTATING THE PLATE ALONG X AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ3_SH,MODE,1,FREQ    ! *GET Solution Items, Entity = MODE 提取一阶模态频率赋给FREQ3_SH
FINISH
/DELETE,,rst
/DELETE,,rstp/COM, --------------------------------------
/COM, PLATE ROTATED ALONG Z AXIS AT 3200 RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,3200*pi/30,,,0,OFFSET,0,0,OFFSET,1        ! ROTATING THE PLATE ALONG Z AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ4_SH,MODE,1,FREQ
FINISH
/DELETE,,rst
/DELETE,,rstp/COM, --------------------------------------
/COM, PLATE ROTATED ALONG Z AXIS AT 9600 RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,9600*pi/30,,,0,OFFSET,0,0,OFFSET,1        ! ROTATING THE PLATE ALONG Z AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ5_SH,MODE,1,FREQ
FINISH/OUT,SCRATCH
*DIM,LABEL,CHAR,5,2
*DIM,VALUE,,5,3
LABEL(1,1) = 'None'
LABEL(1,2) = '0rpm'
LABEL(2,1) = 'X axis'
LABEL(2,2) = '3200rpm'
LABEL(3,1) = 'X axis'
LABEL(3,2) = '9600rpm'
LABEL(4,1) = 'Z axis'
LABEL(4,2) = '3200rpm'
LABEL(5,1) = 'Z axis'
LABEL(5,2) = '9600rpm'
*VFILL,VALUE(1,1),DATA,90
*VFILL,VALUE(1,2),DATA,FREQ1_SH
*VFILL,VALUE(1,3),DATA,(90/FREQ1_SH)
*VFILL,VALUE(2,1),DATA,108
*VFILL,VALUE(2,2),DATA,FREQ2_SH
*VFILL,VALUE(2,3),DATA,(108/FREQ2_SH)
*VFILL,VALUE(3,1),DATA,195
*VFILL,VALUE(3,2),DATA,FREQ3_SH
*VFILL,VALUE(3,3),DATA,(195/FREQ3_SH)
*VFILL,VALUE(4,1),DATA,121
*VFILL,VALUE(4,2),DATA,FREQ4_SH
*VFILL,VALUE(4,3),DATA,(121/FREQ4_SH)
*VFILL,VALUE(5,1),DATA,250
*VFILL,VALUE(5,2),DATA,FREQ5_SH
*VFILL,VALUE(5,3),DATA,(250/FREQ5_SH)
SAVE,TABLE_1
FINISH/CLEAR,NOSTART
/OUT,
/COM, =====================================================================
/COM,  MODELING THE PLATE USING 8-NODE STRUCTURAL SOLID ELEMENT (SOLID185)
/COM, ======================================================================
/PREP7
lg = 152.4e-3       ! LENGTH IN METERS 
wd = 50.8e-3        ! WIDTH IN METERS
tk = 2.54e-3        ! THICKNESS IN METERS
K,1,-wd/2,0,0
K,2,+wd/2,0,0
K,3,+wd/2,lg,0
K,4,-wd/2,lg,0
K,5,-wd/2,0,tk
K,6,+wd/2,0,tk
K,7,+wd/2,lg,tk
K,8,-wd/2,lg,tk
V,1,2,3,4,5,6,7,8
/COM, MATERIAL PROPERTIES OF STRUCTURAL STEEL PLATE
MP,EX,1,2.0e+11    MP,DENS,1,7850      
MP,NUXY,1,0.3      
ET,1,SOLID185       ! 3-D 8 NODE STRUCTURAL SOLID ELEMENT
KEYOPT,1,2,3        ! SIMPLIFIED ENHANCED STRAIN FORMULATION
TYPE,1
MAT,1
ESIZE,5e-3
VMESH,1
NSEL,S,LOC,Y,0.0
D,ALL,ALL           ! CONSTRAINING ALL DOF AT BASE
ALLSEL,ALL
CM,PLATE,ELEM       ! FORMING A COMPONENT WITH ALL ELEMENTS
SAVE,SOLID,DB       ! SAVE THE DATABASE
FINISH
/COM, ----------------------
/COM, NO ROTATION
/COM, ----------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,MODAL
MODOPT,LANB,4       ! EXTRACT 4 MODES USING BLOCK-LANCZOS 
MXPAND,4
SOLVE
/OUT,
*GET,FREQ1_SO,MODE,1,FREQ
FINISH
/DELETE,,rst
/COM, --------------------------------------
/COM, PLATE ROTATED ALONG X AXIS AT 3200RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,3200*pi/30,,,0,OFFSET,0,1,OFFSET,0        ! ROTATING THE PLATE ALONG X AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ2_SO,MODE,1,FREQ
FINISH
/DELETE,,rst
/DELETE,,rstp
/COM, --------------------------------------
/COM, PLATE ROTATED ALONG X AXIS AT 9600RPM
/COM, --------------------------------------/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,9600*pi/30,,,0,OFFSET,0,1,OFFSET,0        ! ROTATING THE PLATE ALONG X AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ3_SO,MODE,1,FREQ
FINISH
/DELETE,,rst
/DELETE,,rstp
/COM, --------------------------------------
/COM, PLATE ROTATED ALONG Z AXIS AT 3200RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,3200*pi/30,,,0,OFFSET,0,0,OFFSET,1        ! ROTATING THE PLATE ALONG Z AXIS
NLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ4_SO,MODE,1,FREQ
FINISH
/DELETE,,rst
/DELETE,,rstp
/COM, --------------------------------------
/COM, PLATE ROTATED ALONG Z AXIS AT 9600RPM
/COM, --------------------------------------
/OUT,SCRATCH
/SOLUTION
ANTYPE,STATIC
OFFSET= -0.1
pi = acos(-1)
CMOMEGA,PLATE,9600*pi/30,,,0,OFFSET,0,0,OFFSET,1        ! ROTATING THE PLATE ALONG Z AXISNLGEOM,ON                                               ! NON-LINEAR ANALYSIS
TIME,1.0
AUTOTS,ON
NSUBS,10,100,1
OUTRES,ALL,ALL
SOLVE
FINISH
/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB                         ! LINEAR PERTURBATION ANALYSIS
PERTURB,MODAL,                                          ! MODAL ANALYSIS,RETAIN CMOMEGA
SOLVE,ELFORM                                            ! REGENERATE STIFFNESS MATRIX
MODOPT,LANB,4
MXPAND,4
SOLVE
/OUT,
*GET,FREQ5_SO,MODE,1,FREQ
FINISH
/OUT,SCRATCH
*DIM,LABEL,CHAR,5,2
*DIM,VALUE,,5,3
LABEL(1,1) = 'None'
LABEL(1,2) = '0rpm'
LABEL(2,1) = 'X axis'
LABEL(2,2) = '3200rpm'
LABEL(3,1) = 'X axis'
LABEL(3,2) = '9600rpm'
LABEL(4,1) = 'Z axis'
LABEL(4,2) = '3200rpm'
LABEL(5,1) = 'Z axis'
LABEL(5,2) = '9600rpm'
*VFILL,VALUE(1,1),DATA,90
*VFILL,VALUE(1,2),DATA,FREQ1_SO
*VFILL,VALUE(1,3),DATA,(90/FREQ1_SO)
*VFILL,VALUE(2,1),DATA,108
*VFILL,VALUE(2,2),DATA,FREQ2_SO
*VFILL,VALUE(2,3),DATA,(108/FREQ2_SO)
*VFILL,VALUE(3,1),DATA,195
*VFILL,VALUE(3,2),DATA,FREQ3_SO
*VFILL,VALUE(3,3),DATA,(195/FREQ3_SO)
*VFILL,VALUE(4,1),DATA,121
*VFILL,VALUE(4,2),DATA,FREQ4_SO
*VFILL,VALUE(4,3),DATA,(121/FREQ4_SO)
*VFILL,VALUE(5,1),DATA,250
*VFILL,VALUE(5,2),DATA,FREQ5_SO
*VFILL,VALUE(5,3),DATA,(250/FREQ5_SO)
SAVE,TABLE_2
FINISH
/NOPR
RESUME,TABLE_1  ! 
/GOPR
/OUT,vm281,vrt
/COM,
/COM, -----------------------------VM281 RESULTS COMPARISON-----------------------
/COM,
/COM,                           | TARGET | MECHANICAL APDL | RATIO
/COM,
/COM,
/COM,  USING SHELL181 ELEMENTS
/COM,
*VWRITE,LABEL(1,1),LABEL(1,2),VALUE(1,1),VALUE(1,2),VALUE(1,3)   ! https://www.cnblogs.com/gaozihan/p/11200897.html
(1X,A8,'   ',A8,'   ',F12.3,'    ',F12.3,'    ',F8.3)
/COM,
/COM,  USING SOLID185 ELEMENTS
/COM,
/NOPR,
RESUME,TABLE_2
/GOPR,
/COM,
*VWRITE,LABEL(1,1),LABEL(1,2),VALUE(1,1),VALUE(1,2),VALUE(1,3)
(1X,A8,'   ',A8,'   ',F12.3,'    ',F12.3,'    ',F8.3)
/COM,
/COM,---------------------------------------------------------------------------------
/OUT,
*LIST,vm281,vrt   ! 将结果输出到vm281.vert
FINISH

http://blog.sina.com.cn/s/blog_153e0668a0102x1zg.html   大变形分析中(NLGEOM,ON)包含应力刚化效应（SSTIF,ON）
https://www.bridgehead.com.cn/thread-3367-1-1.html

输出结果

  -----------------------------VM281 RESULTS COMPARISON-----------------------| TARGET | MECHANICAL APDL | RATIOUSING SHELL181 ELEMENTSNone       0rpm             90.000          90.831       0.991X axis     3200rpm         108.000         108.273       0.997X axis     9600rpm         195.000         195.139       0.999Z axis     3200rpm         121.000         120.686       1.003Z axis     9600rpm         250.000         252.359       0.991USING SOLID185 ELEMENTSPRINTOUT RESUMED BY /GOPNone       0rpm             90.000          90.875       0.990X axis     3200rpm         108.000         108.324       0.997X axis     9600rpm         195.000         195.237       0.999Z axis     3200rpm         121.000         120.725       1.002Z axis     9600rpm         250.000         252.419       0.990-------------------------------------------------------------------------------

再补充一个例子

一个小插曲：命令d,1,all,10,9 误输入为 d,1,all,10.9
D, Node, Lab, VALUE, VALUE2, NEND, NINC, Lab2, Lab3, Lab4, Lab5, Lab6
d,1,all,10.9 表示将1-11节点的自由度都约束
d,1,all,10.4 表示将1-10节点的自由度都约束，因此nend这个参数是四舍五入的，ninc步长默认为1
d,1,all,10.9,3 表示将1,4,7,10节点的自由度都约束
d,1,all,10,9 表示将节点1与10约束
在这里插入图片描述

fini
/clear/prep7
et,1,shell63,,,,,,,1
r,1,3e-3
mp,ex,1,217e9
mp,nuxy,1,0.3
mp,dens,1,7850
n,1,-0.014,,0.15
n,9,-0.014,,0.478
fill
ngen,2,9,1,9,1,0.028
e,1,2,11,10
egen,8,1,-1
finish!  no stress stiff and no spin soft
/solu
d,1,all,,,10,9   
antype,modal
modopt,subsp,5
solve
!/post1
!set,list
*GET,FREQ1,MODE,1,FREQ
fini! with stress stiff and no spin soft
/solu
antype,static
pstres,on
omega,314.159265
outpr,,1
solve
fini/solu
antype,modal
modopt,subsp,5
pstres,on
omega,314.159265,,,0
solve
!/post1
!set,list
*GET,FREQ2,MODE,1,FREQ
fini! with stress stiff and with spin soft
/solu
antype,modal
modopt,subsp,5
pstres,on   !  包含应力刚化
omega,314.159265,,,1   ! 包含旋转软化
solve
!/post1
!set,list
*GET,FREQ3,MODE,1,FREQ
fini

一阶固有频率
no stress stiff and no spin soft：23.96
with stress stiff and no spin soft：72.21
with stress stiff and with spin soft：52.01

对比

两段都是考虑应力刚化与旋转软化，但使用的代码不同
shell63不支持预应力模态分析，改用shell181进行对比

方1
fini
/clear/prep7
et,1,shell181,,,,,,,1
r,1,3e-3
mp,ex,1,217e9
mp,nuxy,1,0.3
mp,dens,1,7850
n,1,-0.014,,0.15
n,9,-0.014,,0.478
fill
ngen,2,9,1,9,1,0.028
e,1,2,11,10
egen,8,1,-1
finish! 方1
/solu
d,1,all,,,10,9   
antype,static
omega,314.159265
NLGEOM,ON  
TIME,1.0 ! 载荷步时间为1
AUTOTS,ON   !  自动载荷步
NSUBS,10,100,1   ! 子步：10步 最少1步 最大100步
outpr,,1
solve
fini/SOLUTION
ANTYPE,STATIC,RESTART,,,PERTURB    
PERTURB,MODAL
SOLVE,ELFORM  
modopt,subsp,5
solve
*GET,method1_freq1,MODE,1,FREQ
*GET,method1_freq2,MODE,2,FREQ
*GET,method1_freq3,MODE,3,FREQ
*GET,method1_freq4,MODE,4,FREQ
*GET,method1_freq5,MODE,5,FREQ
fini
方2
fini
/clear/prep7
et,1,shell181,,,,,,,1
r,1,3e-3
mp,ex,1,217e9
mp,nuxy,1,0.3
mp,dens,1,7850
n,1,-0.014,,0.15
n,9,-0.014,,0.478
fill
ngen,2,9,1,9,1,0.028
e,1,2,11,10
egen,8,1,-1
finish! 方2
/solu
d,1,all,,,10,9   
antype,static
pstres,on
omega,314.159265
outpr,,1
solve
fini/solu
antype,modal
modopt,subsp,5
pstres,on   !  包含应力刚化
omega,314.159265,,,1   ! 包含旋转软化
solve
*GET,method2_freq1,MODE,1,FREQ
*GET,method2_freq2,MODE,2,FREQ
*GET,method2_freq3,MODE,3,FREQ
*GET,method2_freq4,MODE,4,FREQ
*GET,method2_freq5,MODE,5,FREQ
fini

NLGEOM只能用于静力与全瞬态分析。
在这里插入图片描述
NLGEOM,ON
Large-deflection effects有两种：大挠度(大旋转)效应，大应变效应，取决于单元类型。打开NLGEOM，也会自动包含应力刚化效应

对比两种方法前五阶模态频率

略微有区别
在这里插入图片描述
在这里插入图片描述

结果为何不同

两段代码都是验证手册的，前者是15版的，后者没在15版中找到，我猜是旧的，（查看2021版命令）现在OMEGA命令只有三个参数，没有第四个参数设置旋转软化，而在 CORIOLIS提到旋转软化ansys默认考虑。

热流固间的耦合

流固耦合
热固耦合
热流耦合
热流固耦合

http://www.lbrq.cn/news/1082179.html

相关文章：

  • 厦门市app开发网站建设公司/可以推广赚钱的软件
  • 正定网站建设/自媒体平台注册
  • 海外营销平台有哪些/台州seo优化
  • 珠海网站友情链接/推广策略有哪些方法
  • 建筑工程网站搭建/网推平台
  • 网站关键词代码位置/克州seo整站排名
  • 品牌宣传网站建设/苏州百度搜索排名优化
  • 团购网站怎么做/西安网约车
  • 主要网站 开发语言/济南百度开户电话
  • 网站空间到期怎么办/百度搜索引擎下载
  • 泉州专业做网站公司/国内重大新闻十条
  • 方圆网站建设/产品关键词大全
  • 上海网站制作是什么/电商运营是做什么的
  • 移动网站 案例/2022百度seo优化工具
  • 哪个网站帮忙做户型方案/网站seo策划方案
  • 公司公众号怎么制作/seo优化入门教程
  • 西安网站制作开发公司哪家好/扬州seo
  • 帝国cms如何做网站/百度关键词排名批量查询
  • 教怎么做ppt的网站/app接入广告变现
  • 漯河网站建设网站建设/纯注册app拉新平台
  • 做网站需要机吗/国外网站加速
  • 网站建设人员要求/网站模板购买
  • 不用编程做网站/上海网站建设
  • 江苏省水利工程建设局网站/站长之家爱站网
  • 网站怎么做ipfs/外链兔
  • 网站开场flash怎么做的/上海百度竞价点击软件
  • v2ex 网站建设/廊坊网络推广公司
  • 网站设计哪家专业/网络营销软文范例500字
  • 南昌建站费用/友情链接获取的途径有哪些
  • 衡水企业做网站费用/百度站长平台账号购买
  • 【网络工程师软考版】路由协议 + ACL
  • SpringBoot之起步依赖
  • OpenLayers 综合案例-区域掩膜
  • 归雁思维：解锁自然规律与人类智慧的桥梁
  • 飞鹤困局：增长神话的裂痕
  • 《 服务注册发现原理：从 Eureka 到 Nacos 的演进》