We’re putting the final touches on our new badges platform. Badge issuance remains temporarily paused, but all completions are being recorded and will be fulfilled once the platform is live. Thank you for your patience.
General Mechanical

General Mechanical

Topics related to Mechanical Enterprise, Motion, Additive Print and more.

Lifting – Two leg Bridle analysis

    • Ahmad Borghol
      Subscriber

      Hello, I am new to ansys and I want to do a two leg bridle lift analysis (as illustrated in the below photo) knowing that I already did the lifting analysis of the structure with the two springs. So basically I already did the lower part of the photo.

      So How can I proceed now to illustrate the upper part phenomena, and how can I create a beam on top of the two springs (and create connections between them) and then create two other springs on top which will be connected to the crane?

      2. How can I account for the skew load factor (on gravity) and the diagonal loads that will be created when lifting.

      Thank you for your help! I really appreciate that.

    • peteroznewman
      Subscriber

      Photo?

      • Ahmad Borghol
        Subscriber

         

        Sorry I thought that I've attached it. Please find it below

         

    • Ahmad Borghol
      Subscriber

       

      Sorry I thought that I've attached it. Please find it below

       

    • peteroznewman
      Subscriber

      Is the goal of the analysis to calculate the tension in the wires and bars?

      In SpaceClaim, draw a line for the spreader bar, the wires down to the plate, the wires up to the lifting point and a simple rectangular plate with dimensions that reach the four corners where the lower wires go.  SpaceClaim lets you create cross-sections and create beams with those cross sections. You can have a different cross section for the bar, the lower wires and the upper wires.

      In Mechanical, assign a material for each item.  Adjust the thickness of the plate until it reaches the correct mass.  Add a Standard Earth Gravity to load the system.  Put a fixed support at the lifting point.

      Since an object hanging from a single point has little or no stiffness to prevent it swinging, that will cause a Static Structural solution to fail. You can turn on Weak Springs under the Analysis settings to fix that.

      Under the Solution branch, you can insert a Probe for the axial force in the wires and spreader bar.

Viewing 3 reply threads
  • The topic ‘Lifting – Two leg Bridle analysis’ is closed to new replies.