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baozaizhang

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About baozaizhang

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  1. Hi, ydigit: Thank you very much for your help. I submitted a ticket yesterday and is waiting for the response. Sincerely, Zhi
  2. Dear all: I plan to model a CFD of a building under winds. Previously, I used constant velocity in the inlet surface, for now I plan to model a more realistic wind profile (the wind speed and turbulence intensity varies as the height changes). May I ask if there is some colleague here has done this before and tell me where and how I can change this? Thank you very much for your help.
  3. Dear All: I got a question. I want to define some multiplier functions and I want to modify the inp file rather than click in the GUI to import my multiplier function one by one. The right screenshot is how my scripts in "inp" file looks like. The left screenshot is the data format. After I import the inp file, the multiplier function is wrong, only one point is generated. Would you please have a look to see if I have something wrong here? I tried to change the file name to "problem1.dat", "problem1.txt", but none of them work. Thank you very much for your help.
  4. Dear All: I am trying to perform a CFD analysis for a building in wind with opening FSI. But I am afraid I didn’t see the building response (I thought the building should sway after I setting up the options related to FSI). Please see the following description. Thank you very much for your help. I defined four nodes at the top of the building for getting time-history responses. And the velocity of the lower-left point in x-direction and y-direction (two horizontal directions), they are 0 all the time. By opening the FSI, I did the following, would you please help me check if I missed something in the definition? 1. Go to the Eigenmode Manager, import the modal analysis results from OptiStruct. The animation is shown in the following screenshot 2. Change the wall boundary condition to “flexible body” and select “building” as the “Flexible body”
  5. Hi, Tinh: i got it. I can use "position" to do it. Thank you.
  6. Hi, Tinh: Thank you very much for your help. Every time when I got a question, you replied me very quickly. I got a follow up question about moving things in AcuSolve. If I need to move the red block to the place of the grey box, and to make sure the left-bottom points are at the same location after moving. May I ask if there is a way to do it? Just like moving blocks in AutoCAD using reference points. Thank you.
  7. Hi, All: May I ask how can I generate .op2 file in my OptiStruct analysis? Thank you very much for your help.
  8. Dear all: I have a model with plenty of elements (4,383,225) in OptiStruct for modal analysis. And I got the following error, would you please help on how to solve this problem? Thank you for your help. *** ERROR # 2005 *** WIN_IO: WriteFile failed. (112). **************** Too many error messages. Aborting run. Current limit is 10000. Use "MSGLMT" control card to change this value.
  9. Hi, Tinh: Thank you very much, it works well. Just seem will take a long time since I have 1300 copies to generate..... May I ask how to check the REB2 direction. I know I can always create one REB2 or Update the REB2, but not sure how to check what's the direction of existing REB2. Thank you.
  10. May I ask if I want to copy plenty of the elements in a fixed space increment, is it possible to do in Hypermesh? Thank you.
  11. Hello, All: I built a REB2 in Hypermesh between two columns, and I need to build plenty of REB2 along the column height. As shown in the following figure, the green elements are REB2, I need to build REB2 at each node along the orange column (the space is the same along the column). So may I do something like array or copy for the REB2 I built in Hypermesh? Thank you very much for your help.
  12. Another interesting thing is if I jus Another interesting thing is if I just use the setup I showed above for the "solid map", I set 2 elements in the height direction, but I finally get the following: The elements near this region only have half of the height mapped while other parts are mapped from the source to destination with all height, but just 1 element rather than 2 as I wanted. If I select a different chopped region to do the solid map, I got the error saying "Side face 1: not enough connections to dest face loop". Does this mean there is some strange part in my geometry? Thank you very much for your help.
  13. Hello, Tinh, Thank you for your suggestions. I tried to select all the side surfaces as the "along", but I got the following error: The model looks like the following Fig.1. And at the four chopped corners, I have three surfaces there rather than one (Pls see Fig. 2). may I ask if you got any comments on this? Thank you. Fig. 1 Fig. 2
  14. In Fig. 1, it is a screenshot of a 3D solid that I plan to mesh, I have a very thin slice at the top (please see circled region in Fig. 2). 1. I meshed the top surface as shown in Fig. 3. 2. I plan to use solidmap to mesh the top slice first, and then mesh the rest of the 3D solid. I select all the surface elements as my source elements, I select the bottom of the top slice as my destination surface. I select one side surface as my "along geom" (as shown in Fig. 4) 3. After I click mesh, an error message shows up "Term-face-edge has a srong side-face edge idx" and several faces become white as shown in Fig. 5. Would you please tell me what is the reason for this? By the way, I first have a rectangular cross section and then I cut the four corners to make it like this. Thank you very much for your help. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5
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