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  1. freiFEM

    Large assemblies pre processing

    FEA Solver, May be my experience with NASTRAN in a simillar case would be helpful to you. I have no experience with ALGOR. I have also faced simillar problem when i was working with large number of parts in a single assembled part. When i have gone through "f06" file, i found that, there are...
  2. freiFEM

    How to map Fluid Pressure data at Node into Pressure B.C ?

    Hi feel, I would do it in NASTRAN. As Johnhors said, it is difficult to apply variable single pressure value on different elemental surface.But what i would do is, observe the range of presuure values in CFD and apply the same range in your FE model by selecting for each range some group of...
  3. freiFEM

    Symmetry condition for milling cutter

    Hi folks, Can anybody give some idea how can we model the milling cutter which is symmetrical in gerometry. My doubt is regarding the load of the cutter. In my view symmetrical condition is only can be applied when loads are also symmetrical on the symmetrical plane(Then only we can apply the...
  4. freiFEM

    temperature dependent properties of steel

    Hi SkJoe, You can search through www.keytosteel.com ..however..i am copying the properties for S235(can also be called as S235JRH. Yield stress Rp0,2 (MPa) 235 - - Yield stress is Upper Yield Stress (ReH) Tensile stress, Rm (MPa) 360 510 - Elongation, A5 (%) 24.0 - - Impact, Kv/Ku (J)...
  5. freiFEM

    modal analysis of pocket seat in milling

    Hi, Thanks for the reply.Here i would like to know some more information.If i would like to compare the deformation at some area(for example pocket seat in milling cutter), between 2 parts(in my case a standard original one and new optimized one), what are the possible ways? Please let me know...
  6. freiFEM

    Regarding Factor of Safety

    von misses stress can give u the idea the at which max stress conditions ur sturcture or model will fail..coming to the yield stress...after the max plastic deformation..it occurs..nendurance limit..u can hve a look at stress-strain curve..or hook`s law.. factor of safety..depends the...
  7. freiFEM

    modal analysis of pocket seat in milling

    Hi, Thanks for the reply. As suggested I will try to write in a promising way. Coming to the shaft speed, do you mean the maximum RPM of the milling machine? If so, it is around 20000 RPM. And coming to the number of teeth, the cutter i am using consists 8 number of teeth. Actually today i have...
  8. freiFEM

    modal analysis of pocket seat in milling

    thanks GreLocock, some how i have performed the normal mode analysis..but the results are a bit confusing for me..as i gave in my previous reply..there is difference..in frequencies..its k..but when i found out the machine frequency..its just 50 Hz..here in my case..as i mentioned earlier..in...
  9. freiFEM

    modal analysis of pocket seat in milling

    Hi GregLocock, Thanks for the reply. Actually i am performing the optimization task. I have finished it and conducted all priliminary tests on the machine and compared the both original and optimized milling cutters..everything was good... Now i would like to check the stability of both the...
  10. freiFEM

    modal analysis of pocket seat in milling

    hi all, can anybody give me an idea how can i conduct modal analysis of a pocket seat in milling in MSC NASTRAN for windows...thanks in advance..
  11. freiFEM

    Feed force calculation in milling

    Hi all, Can anybody give me an idea how to calculate the feed force manually in milling operation. And what are the prerequisite values.. thanks in advance.. tobias
  12. freiFEM

    information about shape functions

    Hello all, please give me the linksor info relating to.. what is a shape function? how do we need to construct? ...thanks in advance.. regards, freifem
  13. freiFEM

    Applying forces in milling

    Hi all, Can anybody give me an advice how can i define forces in milling operation so that stresses will be induced in the cutter body.In my case i tried to apply the forces in passive nd feed direction but the forces are not going into the cutter body.When i checked the output vectors they are...

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