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  1. academix

    validating simulation results

    Hello: Typically, for establishing convergence in stresses, the mesh refinement between two runs can be compared, at the same location (not the legend value). If the value of the stresses under study, differ by less than 2%, at the same location, then the results can be taken as converged...
  2. academix

    Bolt analysis, applying preload

    Hello: Pre-loading of bolts can be achieved using connectors. But, that would be for simulating the joint, its effects, per se. In your case, you are looking at the bolt itself. Then the approach is to model using gap/contact with pressure loading on the bolt / plate/washer interface...
  3. academix

    Transient thermal analysis with cooling curve and custom materials failing

    Hello: What about the boundary conditions? If no convective boundary conditions are provided, then it is fully insulated. Possible reasons for the issues could be: 1. Boundary conditions 2. Material property curve with points of tangent changes 3. Flux input 4. Time steps required to...
  4. academix

    Scan to 3D

    Hello: In the past we have seen that Scanto3D of SolidWorks Premium being able to 'solidify' 3D Scan data. It all depends on the resolution and density of the scan cloud data and interpolation schemes used. I do not think there should be any issues. We have done it for 'arbitrary' geometries...
  5. academix

    Need some help performing an impact test

    Hello: You are trying to simulate a Non-linear dynamic event that can very well be done in SolidWorks Simulation Premium. Before going into the details of your simulation, let us say, for the moment, that you are trying to capture this event in the physical world. Then you would have a camera...
  6. academix

    Standard vs curvature based mesh

    Hello: This sounds more like a convergence issue. Curvature based meshing reduces errors arising from topology approximation. Please use Error Norm plot under the stress plot option. If you get a monochromatic plot then convergence may not be the problem. Else,you need to refine mesh and re-run...
  7. academix

    hole wizard quantity callout on opposite faces

    Hi: Use 3D sketch and place all 12 hole in single step. In drawing, click 'Import Model Item' from annotation & select hole callout from Dimension tab and click ok. Now SolidWorks automatically add number of instances in hole callout. Regards V K Amirtharaj EGS Computers India Pvt Ltd Dassault...
  8. academix

    macro update for x64

    Hi: Just replace following in your code, it will work. --------- Private Declare PtrSafe Function RemoveMenu Lib "user32" (ByVal hMenu As LongPtr, ByVal nPosition As LongPtr, _ ByVal wFlags As LongPtr) As Long Private Declare PtrSafe Function GetSystemMenu Lib "user32" (ByVal hwnd As...
  9. academix

    Run Macro in Assembly to remove the properties to all components

    Hi!! SolidWorks macro always start with Main procedure. You have written Main procedure to delete custom properties alone. The 'ShowAllOpenFiles' procedure only opens all the part files and drawing files. You have to change 'ShowAllOpenFiles' as Main and main as another one. Another problem is...
  10. academix

    ASME Y14.5-xxxx Profile of a Surface - clarification

    Hello: Your assessment of the Profile tolerance as applied to the Surface is correct. Moreover for Profile tolerance to control location (level 4) and/or orientation (level 3), Datum Reference Frame is necessary. It is not there in the stated feature control frame. The profile establishes...
  11. academix

    GDTP-T 2009

    Hello: Current GDTP Certifications for Technologist and Senior levels, are based on ASME Y14.5 (1994). I am given to understand that by September of this year the certification would be based on ASME Y14.5 (2009). You should read 1994 Standard along with Appendices referring to 1982 for the...
  12. academix

    base excitation for dynamic analysis - SolidWorks 2007

    Hello: Base Excitation comes in SolidWorks Simulation Premium that includes the Cosmos/M GeoStar Interface as well. Your version seems to be very old and it used to be called, CosmosWorks Advanced Professional then. If you have that version, then base excitation can be done as usual. Best...
  13. academix

    Position tolerance, radial dimension tangent to semicircle slot

    Hello The radial dimension would have to be to the PCD and would be basic. The position tolerance call out would be to the x pattern of semicircular holes. These could be conventional cylindrical zones or, bidirectional position tolerancing using polar coordinate method, as provided in ASME...
  14. academix

    The rod doesn't want to fit in place

    Hello: When you create the study as Non-linear dynamic, the inertial contributions are accounted for. Remember, all non-linear simulations are trying to mimic natural phenomena. So, our input, boundary conditions including contact, need to be closer to reality, Best Regards Natarajan...
  15. academix

    The rod doesn't want to fit in place

    Hello: Remember, you are using force convergence at every time step. This problem may arise out of any one or combination of the following: 1. Contact stiffness is inappropriately defined 2. Contact surfaces, if left without friction, are defining the mating surfaces as polished. The...
  16. academix

    FLOWORKS Accuracy

    Hello: The problem sounds interesting. We have had good experience in correlation of the kind stated, with SolidWorks Flow Simulation. Maybe you can send me a model that I can investigate and provide feedback, Natarajan Ramamoorthy Design Engineering Consultant www.egsindia.com

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