2 Replies Latest reply on Apr 8, 2008 7:19 PM by Fernando Cuenca

    multi-surface loads

    mike ekbundit
      I have a weldment that is to be bolted to another. Therefore, I applied loads through the tapped holes (16 holes, no threads). When I apply a force, choose the tapped hole surfaces(parallel cylinders), and set the magnitude, I get a result that is 10-15x higher than if I apply the load through the mating surface.

      For clarity, the part is basically a hollow cylinder with a circular bolt pattern on one end, with the bolt holes running parallel to the cylinder axis 1.5in deep from the mating face. The mating face is a flat plane.

      Why would I have such a big difference in test results? Does CosmosWorks apply the full load magnitude to each bolt hole when I choose multiple surfaces? Or does it evenly distrbute the force among the 16 holes?

      As a reference, I built this part and tested it in real life. Loading the mating face in CosmosWorks gave results much closer to the real test.

      Thanks in advance.