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Recent content by nikoD

  1. nikoD

    English version of the german Roloff matek

    Hi, I am looking for an english equivalent to the german mechanical engineering book Roloff matek. It has a VERY wide selection of design principles to choose from, and also a lot of theoretical stuff. Let me give an idea of what the book contains: The book contains a very large selection of...
  2. nikoD

    Two beams fitted inside each other, spot welded at the ends. What load size can they withstand?

    @r13 thanks for clarifying, I get it now. @azcats and @IDS So I can neglect the spot welds, and it wouldn't even make a difference?
  3. nikoD

    Two beams fitted inside each other, spot welded at the ends. What load size can they withstand?

    @r13 Your last sentence confuses me slightly. If the welds do not hold, why would I have a spring representing their stiffness? If the spot welds do not hold, it is equivalent to them not even being there, right?
  4. nikoD

    Two beams fitted inside each other, spot welded at the ends. What load size can they withstand?

    @robyengIT that is what I am starting to understand. It is basically equivalent to two beams in parallel, right? Where k is the bending stifness. https://res.cloudinary.com/engineering-com/image/upload/v1601916972/tips/main-qimg-bb078e2de276e2aff620a6288fe17aa3_zt9ict.webp By this point I...
  5. nikoD

    Two beams fitted inside each other, spot welded at the ends. What load size can they withstand?

    Thanks for the help! I will look for the other threads mentioned and relay the information to my friend. If you have links to the mentioned threads at hand, I would be glad if you qould send them to me.
  6. nikoD

    Two beams fitted inside each other, spot welded at the ends. What load size can they withstand?

    I have a friend who asked me how I would go about analyzing the max value of P in the situation shown in the picture. Two steel profiles are fitted into each other. Both are fixed to the support, but the beams are only connected to each other with spot welds at the beams' ends. To me it looks...
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