Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: meshparts
  • Content: Threads
  • Order by date
  1. meshparts

    Analysing and designing large mechanical assemblies

    Hi, I was just wondering how many of you out there are performing FEA and design of large mechanical assemblies. What are there the specific problems from your point of view? I will start by saying, that in the traditional FEA software every design change requires reimporting the whole CAD...
  2. meshparts

    Analysing and designing large mechanical assemblies

    Hi, I was just wondering how many of you out there are performing FEA and design of large mechanical assemblies. What are there the specific problems from your point of view? I will start by saying, that in the traditional FEA software every design change requires reimporting the whole CAD...
  3. meshparts

    Universal FE format

    Hi, universal file formats are well known in the CAD world (e.g. iges). What about FEA? Why we don't already have well established universal file formats for finite element models? Possible answers: 1) Too complex data 2) No need for an universal file format in FEM 3) ... what is your...
  4. meshparts

    Robust and flexible definition of properties

    Hello, There is something I wanted to share with you for some time. So I'm very curious about your opinion on the following tip. When programmed with APDL in ANSYS FE models that contain multiple materials, element types, real constants and sections, the classic numbering of properties can get...
  5. meshparts

    Computing Contact Sliding Distance by APDL

    Hello, after a prestressed modal analysis with contact I would like to get / compute the sliding distance of the contact elements for each mode. This is easy to do after the static prestress solution step (etab,,cont,stat). In order to compute der eigenvalues the contact status is...
  6. meshparts

    Damping with nonlinear prestressed modal analysis

    Hello, I’m trying to do a full nonlinear prestressed modal analysis in ANSYS. The model is basically two plates screwed together by four screws. So the nonlinearity comes from contact and the damping from friction in the contact. I’m doing the analysis based on the example from the ANSYS...
  7. meshparts

    Magnetic Forces in Iron

    Hello, using Ansys I have modeled an electrical machine consisting of iron, magnets, coils and air. I would like to compute the elastic deformation of the Iron under the influence of the static magnetic forces. By "static" I mean, that the rotor dose not move during the calculation of forces...
  8. meshparts

    Residual Vector Method

    Hello, since Ansys Version 11 residual vectors can be computed and taken into account when using modal superposition analysis. I would like to use the residual vectors for external purposes (Matlab). Now this new capability is not transparent for the user. One cannot read or plot the...
  9. meshparts

    Bug in Ansys Classical found

    Hello, I have the problem, that I can not change the Element Type Pointer (TYPE) in Ansys Classical. Both APDL and GUI commands are not working! Instead Ansys lists the defined element types (ETLIST) and the point remains unchanged! I had this problem in the past also and I know it can be...
  10. meshparts

    Problem using *MOPER,,,ENEAR

    Hello, dose anybody already used the function *MOPER,,,ENEAR? I have used this function to get a list of elements nearest to a list of nodal coordinates. All I am getting, is a list of real numbers instead of integers (element numbers). Can anybody explain this to me? Many thanks in advance...
  11. meshparts

    Full Harmonic Analysis with Material Damping

    Hello, I have posted here a simple model of a spindle system, composed of a beam, a spring and a point mass. The rotation of the spindle is transformed in a translation of the spring using CE's. On the other end of the spring is the point mass. For this model I am doing a Full Harmonic...
  12. meshparts

    Substructuring vs. CMS

    Hello, I have done some comparison simulations using the Substructure and CMS (Component Mode Synthesis) techniques in ANSYS. For statical analysis both methods are very accurate, compared with the results of the full model. For modal analysis I'm getting totally wrong results when using the...
  13. meshparts

    Substructuring vs. CMS

    Hello, I have done some comparison simulations using the Substructure and CMS (Component Mode Synthesis) techniques in ANSYS. For statical analysis both methods are very accurate, compared with the results of the full model. For modal analysis I'm getting totally wrong results when using the...
  14. meshparts

    CMS

    Hello, can anybody provide a good source of free documentation on Component Mode Synthesis? I have done some research by my self with Google, but I would like to get more detailed informations, about the advantages or disadvantages of the CMS methods available. Thank you very much! Alex
  15. meshparts

    Ansys vs. COMSOL

    Hello! My institute is thinking about achieving the Finite Element Software COMSOL. We have already Ansys. Our hope with COMSOL, is to get a more user friendly package for lower price as for Ansys. Primary we would use COMSOL for students if the learning effort is lower as for Ansys. On the...
  16. meshparts

    SCWRITE and SCREAD don't work!

    Hello, I want to define the section properties for beam188 elements. The section type is ASEC (arbitrary section). When defining ASEC sections the user must first model the area and then use the command SCWRITE. A file with section mesh properties will be written. With SCREAD one can read in...
  17. meshparts

    Graphics Card for Ansys

    Hello! I'm wondering, if the graphics card important is for displaying the Geometry, Elements or Results. My problem is, that I have to wait too long, to move a deformed shape of my modell, due to too much elements, even with PowerGraphics on. So I'm thinking to buy a better graphics card, but...
  18. meshparts

    Modal Damping

    Hello, I need to identify modal damping coefficients for a modal superposition analysis with FEM. I know that one method to compute the damping is the half power bandwidth, when the frequency response is known. I have the frequency response curve of the real structure. But this structure have...
  19. meshparts

    Participation factors after Modal Analysis

    Hello, is there a possibility to get the participation factors of mode N after a modal analysis in all directions? I found something in the ansys help, by using *GET, Par, MODE, N, PFACT but only for ROTZ... Why? How can I get it for UX for example? After a modal analysis, the output...
  20. meshparts

    Output of memory needed and available

    Hi, I would like to know, if my model needs more then the available RAM. When I look at the output text of a modal analysis, i see a lot of information about memory available or needed: EST. OF MEMORY NEEDED = 104 (MB) MEMORY AVAILABLE FOR EIGENSOLVER = 179 (MB) MEMORY TO...

Part and Inventory Search

Back
Top