How do you calculate/model the displacement of a beam subjected to the forces in the picture (a linear load from above and a point load from below) but is supported on a distributed support?
I have tested SkyCiv Beam and Structural 3D as well as sbbalk 9.0, but there is no support for distributed support (linear support).
If I understand your sketch correctly, you have a Kertobalk on a concrete structure that you want to load? How you should set up the boundary conditions and how the beam behaves entirely depends on how you've attached the beam to the concrete. Is it glued along the entire underside or only attached at the ends? The load from above will go straight through the Kertobalk regardless, only causing compressive stresses perpendicular to the beam direction. How your upward-pointing point load affects the upward deflection is entirely dependent on how the Kertobalk is attached to the concrete, which is extremely much stiffer than the beam...
The Kertobalk is not attached to the concrete at all but merely rests on it. The idea is that the point load will lift the beam slightly from the concrete. And the question is how much.
Thank you @tobbbias, but it's more about the principle of how to approach this problem. The beam's properties do affect the result, but not the method (hopefully and presumably).
All the examples and programs I've seen only support a number of support points (with emphasis on points) that restrict movements in certain axes. What I would like to include in the calculation is a support that is widespread (like a line load but a support) and additionally only restricts downward.
Set up the elastic line's differential equation for each section (between locations something changes, support, point load, etc.). You get 4 continuity conditions at each transition.
@kashieda Thanks Was hoping for a shortcut, like some clever way to use the available mechanisms for something approximate. It's not exactly a basic case.
15-20 years ago I might have given it a try, but you don't get any smarter with age
@bossespecial Want to lift a beam to insert pallet washers, but the attachment in the beam has a limited maximum load. Thanks for the tip about FEM Design, I'll see if I can manage it there.
Maybe I don't see the full extent of the problem, but isn't this something a practitioner has solved by placing a crowbar between the Kerto beam and the concrete and possibly increasing the leverage effect with an attached pipe until the beam is lifted enough so the buddy can insert the washers … .??
I do not understand the problem statement at all, but would it be easier if you "split" the beam in the middle and consider one end as simply supported and the middle as fixed?
You can solve it approximately with a margin of error of a few percent with the programs you have.
17 kN lifting force will never be able to lift more than a 1.98 m beam. If you model such a long simply supported beam with your specified loads, the forces counteract each other and 0 kN goes to the end supports. Read off the deformation.
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Was hoping for a shortcut, like some clever way to use the available mechanisms for something approximate. It's not exactly a basic case.