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Deforming steel bar/plate

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    Deforming steel bar/plate

    Can anyone help me figure out how much force it will take to deform steel plate?

    65mm x 8mm plate & 65x10mm plate
    If one end is secured and I have 1300mm free length with no support what force will it take to deform ? Bending is ok.

    thanks


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    #2
    Is this a lintel for brickwork?
    Originally posted by Faux Forg
    I agree with Rdyno

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      #3
      Deforming steel bar/plate

      A fence!




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        #4
        In what direction?
        3D scanning
        3D modelling
        Structural certification
        3 and 5 axis milling

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          #5
          Originally posted by PLAYA View Post
          In what direction?
          The 8mm / 10mm thickness direction


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            #6
            buy a length and try it, actually buy two as after you deflect it by the spacing between two bits you will be trying to bend two bits.

            shit looking fence IMHO, but it should pass the cordless angle grinder test.

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              #7
              sharpen all the edges and no one will try (for very long) bending it.
              GT-P
              Bandsenkowagon

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                #8
                A lot.

                Perhaps the better question is how do you hold one end of a 1.3m piece of steel well enough that you can apply enough force to deform it?

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                  #9
                  Originally posted by 36 View Post
                  A lot.

                  Perhaps the better question is how do you hold one end of a 1.3m piece of steel well enough that you can apply enough force to deform it?
                  My current plan is that the steel will actually be approx 1.55mm long with 0.25m embedded in a 300mm strip footing. Do you think that would be ok?


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                    #10
                    The flat bar get 2 holes punched in the bottom from someone with a punch and shear and run reo rod through the holes. Say 200mm apart and 50mm concrete cover. Tack the flat bar to it, in the real world that is not a done thing but in this it is fine. Would make it proper strong.
                    3D scanning
                    3D modelling
                    Structural certification
                    3 and 5 axis milling

                    Comment


                      #11
                      Deforming steel bar/plate

                      Originally posted by PLAYA View Post
                      The flat bar get 2 holes punched in the bottom from someone with a punch and shear and run reo rod through the holes. Say 200mm apart and 50mm concrete cover. Tack the flat bar to it, in the real world that is not a done thing but in this it is fine. Would make it proper strong.
                      I like that idea and itís quite similar to what I was planning
                      I am thinking to get extra flat bar and weld to the sides of the uprights, below ground.

                      Problem is still understanding what cantilever the steel can withstand. A formula I found seems to indicate ~25kg but unsure


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                        #12
                        Assuming you use 350 grade plate, 8 mm will yield at about 20 kg and 10 at about 30 kg.

                        W 10 mm
                        D 65 mm
                        L 1300 mm
                        I 5417 mm4
                        Fy 350 MPa
                        y 5 mm
                        F 292 N
                        29.7 Kg

                        And will be at 50 mm deflection

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                          #13
                          Perfect! Thanks
                          Thatís the formula I used but wasnít sure if I was doing it right



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                            #14
                            A 250mm footing? Seriously? I do 600 to 900 around here. But my shit doesnít fall over.

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                              #15
                              Deforming steel bar/plate

                              Originally posted by Marlin View Post
                              A 250mm footing? Seriously? I do 600 to 900 around here. But my shit doesnít fall over.
                              The original triple brick building from 1889 has no concrete footing, just 200mm of crushed rock and itís still standing. [emoji3]
                              I think a 300mm strip footing for a fence will be fine [emoji3]


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