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  1. 2design

    ASTM A656 grade 80 vs. ASTM A1018 HSLAS-F GR80

    Hello all, Just trying to figure out if I have ASTM A656 Grade 80 called out on the drawing but the 0.5" part is cut from ASTM A1018 HSLAS-F Grade 80, should I be concerned? The part is part of a weldment and is used in a dynamic (fatigue) environment. Are these different material specs...
  2. 2design

    Fatigue test welded test bars to predict componet life

    more rough terrain in air fatigue
  3. 2design

    Fatigue test welded test bars to predict componet life

    Terry, This was the information I was looking for to help me move in the right direction. Star for your help.
  4. 2design

    Fatigue test welded test bars to predict componet life

    Thanks Metengr for your input but what I am looking for was an answer to the question in the last sentence. This was my fault because I did not properly state what I was looking for. What I want an answer to is, has anyone heard of characterizing welded joints using welded test bars in order to...
  5. 2design

    Fatigue test welded test bars to predict componet life

    Hello, We are having some fatigue issues on welded structures. To help us predict better fatigue life, it has been proposed that we should make some fatigue test bars (coupons) and test then to come up with welded material fatigue curves. I've never heard this being done before for welds and...
  6. 2design

    Mating order in NX6?

    There is an icon on your tool bar that you need to change that either has AC (assembly constraints) or MC (mating condition). If the AC is showing select the down arrow to the right to switch it. Just switching it might even fix it. If you originally had mating conditions and then change the...
  7. 2design

    Mating order in NX6?

    Assembly constraints can be a very big pain to work with. Most people here still try to use mating conditions because they are so unreliable. Always watch your position column in your assembly navigator and watch for yellow and red warnings and locks. If they pop up undo the last constraint you...
  8. 2design

    Changing extensions lines to centerlines

    Matt, Thanks for the help again but, 1) We are using ordinate dimensions and the extension lines don't turn off using this method. 2) The checker is not the problem, he agrees with us. It goes higher than that. Some things are just too sacred to change. 3) Solidworks has told us it is not a...
  9. 2design

    Changing extensions lines to centerlines

    Thanks Matt, This is our intepretation also but we can't convince the person that dictates our rules pertaining to drawings. There is no way to make a script to change the line font? Thanks.
  10. 2design

    Changing extensions lines to centerlines

    Thanks for your input, Just for clarification, we need need the extension line to be completely replaced by the centerline. We currently do this by dragging it down to nothing and then drag the centerline from the hole to the ordinate dimension. This causes the software to act up becasue the...
  11. 2design

    Changing extensions lines to centerlines

    Hello, Can anyone tell me how to change extension lines in a drawing that indicate the center of a hole to a centerline? I am told this is an ANSI standard. Thanks in advance.
  12. 2design

    High or low resonance

    Even if you design for a low frequency, won't there still be some resonances at the higher frequncy range? I believe that all you will be doing is changing your mode shapes, add or subtarcting certian modes, when you design for a high or low resonance.
  13. 2design

    FloWorks good or bad for CFD

    I've used one other CFD in the past but that was for a different sector that wouldn't be of benefit to you. I also am using Floworks for electronics packaging. No I do not have a recommendation. I just think that you should not buy it just because it is packaged with SolidWorks. You will get...
  14. 2design

    FloWorks good or bad for CFD

    I've been using FloWorks for less than a year and if I had a chance to change to another program I would. It has a lot of buggs and clunky work arounds. I would not purchase any analysis program just because it is integrated into a CAD software. None of my CAD models I use for design can be used...
  15. 2design

    Assemblies

    Yes, and worse yet when there is a mate condition but it is not working properly. The best way I have found to degug this is to perform a modal (frequency) analysis using the sparse solver and activate the soft springs options. If it solves it may indicate which contacts are not working or missing.
  16. 2design

    run time error

    It may be more work but I would start debugging the model such as: 1) perform a modal analysis using the sparse solver and activate the soft springs options. If it solves it may indicate where the problem is in the model. or 2) Suppress most of the parts in the assembly except two or three...
  17. 2design

    Cosmosfloworks Memory Issues

    1) Try to keep your total cell count below 400,000. 2) Defrag your hard drive. 3) Reboot your computer. 4) Might need more RAM, I have 4 G's but I am not sure if XP can use it all.
  18. 2design

    Assemblies

    Try a simple assembly model such as two bars that mate at the ends. Put a contact constraint between the two so you essentially have one beam. Fully constrain one end and put a load on the other end. Solve it to see if this works.
  19. 2design

    Assemblies

    Do an interference quick on the assembly. Correct them if there are.
  20. 2design

    Floworks Tutorials

    Try looking in \Program Files\SolidWorks 2006\COSMOS\FloWorks\lang\english\Docs. There should be some there.

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