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  1. hungrydinosaur

    Percentage Loading in Lift Padeyes

    Hi Folks, I am doing a hand calculation to find the percentage loading in 4 lift padeyes on a structure which is 2000mm L x 1500mm W x 1200mm H. Attached image shows a structure with the COG exactly in the center. This would then have a percentage load on each liftpoints/padeye as 0.25 (which...
  2. hungrydinosaur

    Combined Stress in Pin - AISC Reference

    Hi All, I am trying to find some reference for combined stress calculation in a pin, in AISC 360-10. Can someone guide me to the correct section please? The pin in question is a circular pin used in a clevis, and we have the result values of Axial and Shear Force on the pin with a beam...
  3. hungrydinosaur

    Tie-Down Welding Load

    Dhengr, The winch manufacturer has given the same tie-down loads which I had sent earlier. You are correct on the 16 nodes and interpretation of the photo, with Y axis as the vertical axis. The loads are worst case loads with the wire rope angle in the worst case. The stiffness of winch...
  4. hungrydinosaur

    Tie-Down Welding Load

    Hi Canwesteng/JGard1985/Dhengr, Thanks for your replies. Dhengr, this is a Winch which is welded down to the ship with tie-down plates on all four sides of the winch. The plates are bolted with a single bolt to the winch. The plate is then welded to the deck of the ship. See attached file. The...
  5. hungrydinosaur

    Tie-Down Welding Load

    Hi All, I did an analysis on a equipment. The equipment is welded to the ground plate at 16 points/Nodes (N1, N2...N16). The analysis under 3 different loading scenarios give 3 outputs as attached. I am doing some hand calculations for welding at these nodes. The TOTAL LOAD (highlighted in...
  6. hungrydinosaur

    Equivalent Stress in Weld

    Hi All, I have attached a sketch of a welded structure, with 4 gusset plates. The structural analysis program shows the loads in the X, Y and Z direction at the beam intersection. I know it might sound basic stuff for many of you, can anyone advise what is Equivalent Stress for the welding of...
  7. hungrydinosaur

    Round Pattern/Bolted Flange Connection

    Hi All, I am trying to do an analysis on a structure, where some part has pipe to pipe connection (bolted with flanges). The structural beam analysis software I am using does not allow to model flanges or bolts. So the flange joint can only be input as beams with a node joint, and I will have...
  8. hungrydinosaur

    Holes in I-Beams

    Hokie,Robyeng,Agent, all thanks a lot.
  9. hungrydinosaur

    Holes in I-Beams

    Hi All, If we want to make a circular hole and a rectangular hole in an loaded I-Beam, which place is best place to put the holes (Center/or at beam ends, and mid-web/or near flange ends), so that there is the least stress in the beam near the opening. One beam is point loaded in the center...
  10. hungrydinosaur

    RAM & Processor for Simulation

    Hi All, For FEA, simulation work which computer specification would be better? A computer with processor i7 4790K, 4GHz, 4 Core, 8 Threads, 32 GB RAM or a computer with Processor i7 5930K, 3.5GHz, 6 Core, 12 Threads, 64 GB RAM. Thanks in advance, HD
  11. hungrydinosaur

    Draftsight Default Paper Space Sheet Size

    Hi All, I normally save SolidWorks drawings to .dwg format. While opening I use Draftsight for .dwg files. But when the drawings are saved in the .dwg format, the drawings are all bigger than the paper size (around 5-6 times the paper size). The drawing size is correct, which is A3 size. But...
  12. hungrydinosaur

    Lifting Padeye on I-Beam

    Hi All, I am designing a structure with a final load of 25 tonnes. While I have designed lifting padeyes in the past where padeyes have been slotted through tubes (circular, square, and rectangular). This case is the padeye is to be welded on a I-Beam, but instead of just welding it with a full...
  13. hungrydinosaur

    Foam Block

    Hi All, I am designing a subsea equipment, which will be using a foam block to make the equipment neutrally buoyant. While we can calculate the buoyant force needed to make the equipment neutrally buoyant in seawater, I have another question. Suppose the equipment is neutrally buoyant in water...
  14. hungrydinosaur

    Code Criteria - von Misess Stress

    Hi All, I am designing and analyzing a container frame 20' x 8' x 8'. As per DNV 2.7-1 guidelines, the equivalent von Mises stress is not to exceed 0.85 of the yield stress of the material. Now as I am doing a beam/column analysis in my software the output stress is only in axial, shear, or...
  15. hungrydinosaur

    Hydraulic fittings

    Hi All, Thanks for the suggestions. I was also trying to go for JIC and stick to that standard. We have used Autoclave in the past, so will refer to that as well. Thanks once again. I will move on with JIC. Regards, HD
  16. hungrydinosaur

    Hydraulic fittings

    Hi All, I am trying to design some new hydraulic tools where pressure will range from 1000 psi to 15000 psi. I am familiar with Swagelok and Parker. My question is what fitting standard should I stick to for my Marine and offshore products? I want to stick to one commonly used and available...
  17. hungrydinosaur

    Rotational Torque Calculation

    Hi All, I am designing a winch, which would have a drum weight of 2000 kg, and wire rope of around 4500 kg wrapped on the drum. I need to find the torque required to rotate the drum from rest. Is there any literature or reference I can refer/read to? Thanks in advance. Regards, HD
  18. hungrydinosaur

    Torque for Roating Heavy Winch

    Hi All, I am designing a winch, which would have a drum weight of 2000 kg, and wire rope of around 4500 kg wrapped on the drum. I need to find the torque required to rotate the drum from rest. Is there any literature or reference I can refer/read to? Thanks in advance. Regards, HD
  19. hungrydinosaur

    Monorail Trolley

    Hi, We have a 12 ft W Beam running in our workshop, with a 2 ton trolley running in it. Everything is rated for a WLL 2 ton. The W Beam is welded across to the transverse beams above it. All the transverse beams make up the roof of the structure, and all the transverse beams are placed at a...

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