CosmosWorks Distributed Loads
CosmosWorks Distributed Loads
(OP)
Here's the situation I'd like to analyze. A torsion spring with one of the straight spring legs resting flush against a sheet metal flange, the other...well I dont think it has bearing on potential discussion. This spring leg should deliver a triangular distributed load from torque: Zero above the spring axis, Maximum and the extreme tip of the spring leg. I'd like to mimic this real-life loading scenario in CosmosWorks. Under the Loads Feature box resides an expandable window containing parameters for a Non-Uniform Load. I'd like to at least try experimenting with this function but it requires that a coordinate system is selected. I've tried picking lines,vertexes,origins, you name it. I've followed the idealistic help instructions without success.
Any suggestions would be greatly appreciated.
Thanks,
Tom
Failure is a prerequisite of successful design






RE: CosmosWorks Distributed Loads
I'm not sure whether you are right to assume a distributed load on that leg. It depends on the layout, the relative length/width of the sheet metal tab, any offset, etc. If you start (at no load) with the spring leg perfectly in line against the tab, then chances are good that as the leg starts bending under load, the tab edge will start reacting most of the load?
Anyhow, you might be able to do what you want to by using Geometry > Curve > Split Line. This might allow you to split the leg surface into planned portions using an initial sketch. Alternatively, edit or cut away a small/thin sliver from the spring leg 3D CAD geometry.
Regards
Gert
RE: CosmosWorks Distributed Loads
The modelling of the parts is done and doesn't pose as a a problem. I am quite familiar with split-lines. Yes I could cut the flange into small slivers each with its own load to represent the distributed triangular load, but I'd rather try and take advantage of the COSMOS features rather than be reminded of integral calculus.
Failure is a prerequisite of successful design
RE: CosmosWorks Distributed Loads
RE: CosmosWorks Distributed Loads
Failure is a prerequisite of successful design
RE: CosmosWorks Distributed Loads
I did not encounter any errors, and the loading was depicted correctly with force vectors which varied (increased) in length. I successfully tried out Force loading, Normal Force loading as well as Pressure loading.
But, analysing in SI units (m) after having started with solid geometry created in mm, I initially had a hard time figuring out the correct Force/Pressure values and the matching equation coefficients… Maybe the most important clue is that in the case of force loading, the force value should be the TOTAL (per entity) and the coefficient could be 1 or 1000 (it does not matter!). With pressure loading, one of course has to use a specific coefficient in order to achieve the correct max pressure at a given distance.
Regards