SolidWorks Simulation is a powerful tool to analyse and predict how a component will react
under loading conditions. It uses the
finite element method to divide the subject model into smaller elements for
analysis. The method and classification
of this division can determine the accuracy and speed at which your simulation
will run.
In the case
of weldments similar to the sample beam as shown below, they are treated
differently than a typical solid in solidworks simulation.
Weldments are
treated by default as beam elements which have joints at junctions and
connection points. In our example we
have a simple cantilever beam therefore only two joints exist represented by
the yellow spheres in the graphical area.
If you need
to edit the joints groups, right click the “Joint Groups” and select edit. This will allow you to edit joints in the
properties box.
When applying
the fixtures and loads we may do so normally, however keep in mind that point
load and fixtures are to be applied on the joints. To do so, select the joint icon before you
select the location and apply the load to your model.
Our model is
fixed on one end and the force is set to 100N downward on the other end. When meshed the weldment will appear
differently than most common tetrahedral mesh as shown below
Running the
simulation and superimposing the original model we find that the maximum
deflection is given by 0.108mm.
Alternatively,
you are also able to select a weldment and specify that the program treat the
3D model as a solid as with standard tetrahedral mesh. To do so, right click the weldment body and
select “Treat as Solid” from the menu.
In doing so
you will have to reapply your fixtures, forces and mesh to the model. The equivalent study in solid mesh format is
as shown below
You have the
option to apply the applicable type of element that best suits your model.
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