模型单元法线方向问题
请问在5.5版本中那里可以翻转单元法向方向? 几何菜单里面问
在没导入模型前有,但是导入模型和就没有这一项了,这是什么原因?难道它还对模型有要求? Check Mesh还是不行,不知道怎么回事
SOLVE PARAMETERSMODEL: 1 - 33
------------------------------------------------------------------------
MODAL Coordinates: 10 Vectors
Saving DISPLACEMENTS every 1 steps
Energy Calculation Enabled
Surface post-processing on positive side
SOLVE PARAMETERS
MODEL: 2 - 2
------------------------------------------------------------------------
MODAL Coordinates: 10 Vectors
Saving POTENTIALS every 1 steps
No saving of RESULTS
Energy Calculation Enabled
Surface post-processing on positive side
SOLVER7 IS NOT AVAILABLE FOR THIS MODULE, SOLVER1 WILL BE USED INSTEAD
SAVING MODEL 33
SAVING STRUCTURAL MODES INTO DATABASE
SAVING MODEL 2
SAVING ACOUSTIC MODES INTO DATABASE
WARNING *** FIXED DOFS in STRUCTURAL FEM model!
Please make sure that Boundary Conditions are
COMPATIBLE with STRUCTURAL MODAL BASIS
Evaluating Displacements at STRUCTURAL nodes
Evaluating Acoustic Velocities at FLUID nodes
Post-Processing of Results at Field Points
A FATAL ERROR OCCURRED.PROGRAM STOPPED
这是log里的部分,请高手解释下,应该怎么修改。
问
里面提及到边界条件有问题,我就是固定了结构有限元的几个节点位移,这个在一些例题里也有,我觉得应该没问题。可能就是Surface post-processing on positive side这个问题? 把日志命令流贴上来,应该是边界类型不对。节点型只能在节点上设置边界条件;单元型只能在单元上设置边界条件。
命令流
New Name 'shiyan' Model 1 File shiyan.sdb ReturnOptionFEM Frequency Structure Return
Import Mesh Format Patran File C:\WINDOWS\Temp\11.out Return
Material Shell
Name 'shell'
Young 2e11Poisson 0.3Rho 7800
Elements All
Return
Geometry Thickness 0.002
Elements All
Return
Boundary
UX Real 0 Imag 0 UY Real 0 Imag 0 UZ Real 0 Imag 0
RX Real 0 Imag 0 RY Real 0 Imag 0 RZ Real 0 Imag 0
Nodes 1283 905 923 1301
Return
Boundary
FX Real 0 Imag 0 FY Real 0 Imag 0 FZ Real 1000 Imag 0
CX Real 0 Imag 0 CY Real 0 Imag 0 CZ Real 0 Imag 0
FN Real 0 Imag 0
Nodes 1123
Return
Check Merge Return
Modes
Vector 10 Tolerance 1.0000e-6 Iteration 100
BLanczos
Return
Parameter Model 1
Vector 10
Save Displacements Step 1
Store Displacements none
Return
Return
Solve
Frequency 1 To 50 LinStep 1
Return
Store
Case Active
Displacements
Frequency 1 To 50 LinStep 1
Nodes 1605
Return
Return
Curve
FunctionDisplacement Node 1605
Vector 1 0 0
Format1
NoBackground
Marker 0
Return
Return
Save Return
New Name '2' Model 2 File 2.sdb Return
OptionFEM Frequency Fluid Return
OptionFEM Frequency Fluid Return
Import Mesh Format Patran File C:\WINDOWS\Temp\22.out Return
Activate Model 1 Return
Activate Model 2 Return
Material Fluid
Name 'air'
Sound Real 3.4000e+002Rho Real 1.2250e+000
Elements All
Return
Modes
Vector 10 Tolerance 1.0000e-6 Iteration 100
BLanczos
Return
Activate Model 1 Return
Activate Model 2 Return
Link
Model 1
Elements 801 To 1200
To
Model 2
Faces z=0
Behavior FLUID-STRUCTURE
Return
Parameter Model 2
Vector 10
Save Potentials Step 1
Save Results none
Store Potentials none
Return
Store Results none
Return
NoFlow
Return
Point 0.6 0.6 0.6 Return
Solve
Frequency 1 To 300 LinStep 1
Return
暂时解决
我将加的激励力改为幅频,相频方式,计算成功,谢谢。 原来激励方式不是节点类型吧?回楼上
以前用的激励方式是实部,虚部。 至于激励方式还分节点和单元,我之前不知道,再去查查书,看是怎么个区别。
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