Solidworks flow simulation 2014 tutorial pdf

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Free access for solidworks flow simulation tutorial pdf tutorial to read online or download to your computer. Free access for solidworks flow simulation tutorial pdf chapter to read online or download to your computer. Free access for solidworks flow simulation tutorial pdf edition to read online or download to your computer. Finally, click the green check mark. Figure With the forces and fixtures specified, we can run a finite element analysis now!

SolidWorks needs to break the model into small tetrahedral units, which together are called a mesh. Smaller meshes as in meshes with smaller individual units produce more precise results but require additional computing time. Large meshes run quickly but may produce wildly inaccurate results, especially around sharp edges.

It is common to use a mesh with varying element sizes: smaller units around the areas of interest in a model, such as potential failure points, and larger units where precise results are less valuable.

This will create a uniformly sized mesh over your entire model, which should look something like Figure Meshed glass. You will see that even this simple problem consumes significant memory and time.

This will show you the von Mises stresses from the 50 N load by coloring the mesh. You should see the greatest stress occurring at the joint between the stem and the bowl, shown in Figure Is this reasonable? Stress plot close-up. To see the interior of the bowl better, we can slice the model in half. Figure 13 shows an elegant cutaway view and an easy way of observing the interior of the model! Stress plot cutaway. Create a new result plot to show displacement.

Displacement plot. The actual displacement caused by the 50 N load is very small, on the order of microns, and will not be visible on this model. To make deformations visible, we need to change the displacement settings. Now we see the bowl squashed, the stem shortened, and the connection between stem and bowl beginning to cave as in Figure Again, the view can be improved by going into Plot Tools and setting up Section Clipping, as in Figure Exaggerated displacement.

Exaggerated displacement, cutaway. Frequency analysis Frequency analysis is done to models to identify resonant frequencies and mode shapes. The wine glass is a good model to run frequency testing on because at least one of its resonant frequencies yields a mode shape that can shatter the bowl while leaving the stem intact. We are going to find that resonant frequency using finite-element modeling. A frequency analysis pane will appear on the left side of the screen. This is very similar to the static pane from before; it lets you add fixtures which are obligatory and external loads which are optional.

Add the same fixtures from the static study; do not add any external loads. This is all that is necessary to begin the frequency analysis! Run the analysis just as in the static study. Since the wine glass has plenty of contours and such, there will be several resonances with unrelated mode shapes. We care about finding a mode shape that will result in the glass bowl shattering without damaging the stem or base.

The best way to investigate this is to go through the mode shapes one-by-one. Beginning with mode shape 1, check OK. The result is shown in Figure Still image from mode shape 1. The mode shape may be easier to visualize if animated. In a few seconds, SolidWorks will show a looping animation of the glass bending along its first mode shape deformation is exaggerated and the period is increased greatly.

You can rotate the model now, just as you would if it were inanimate. Now you can see that the stem of the glass is bending back and forth, which means this is not the desired mode shape. Time to try the other ones! Cancel the animation with the red X in the animation pane.

Mode shape 2 has a resonant frequency that is less than half of one Hertz away from mode shape 1, which strongly suggests the resulting deformation will be the same as before, but along a different plane. The Animation function confirms this. Mode shape 3 looks like a plausible bowl-shattering shape, as do shapes 4 and 5 which have nearly identical resonant frequencies. In fact, any one of these three will do the trick and shatter the glass bowl. You can save the results as a. Frequency Hz Plain-language description of mode shape motion 1 2 3 4 5 Thermal analysis Thermal studies are very different from structural analyses such as the static and frequency analyses above.

Still, the process has many similarities. Thermal analysis in SolidWorks can be used to approximate heat flow through an object before or after the system reaches a steady-state condition. Obtaining good thermal analysis of a model is generally more involved than obtaining good static analysis. Wherever the thing being modeled contacts a fluid at a different temperature—the air surrounding it, for example, or flowing water inside a pipe—we have to specify a convection coefficient to define how heat flows in our simulation.

Finding an accurate convection coefficient is not trivial; it requires thermodynamic calculations that vary from system to system, and it is probably accompanied by making numerous assumptions about the model to simplify behavior.

Because the convection coefficient has a good deal of uncertainty, your finite element results will also have corresponding uncertainty. It may be prudent to explore your results over a range of possible convection coefficients to understand your sensitivity to the unknown parameter. In our thermal analysis, we are going to investigate something straightforward: the temperature profile of an empty wine glass being held by the stem or underneath the bowl.

Fortunately, our glass is radially symmetric! For thermal analyses, we can look at a small sliver of the glass and obtain the same results as with a whole glass, but in a fraction of the time. In thermal analysis, initial conditions must be defined on entire bodies, which is possible in assemblies but not on parts.

So, after we save our wedge as a new part, we will have to create an assembly for it as well. When performing a study on an assembly with multiple parts, even if they are of the same material, it is critical to define the nature of the contacts between them. We will represent these in our thermal model as segments of faces fixed at K approximately human body temperature.

It is important that we only select segments of the model faces—for example, it would be silly to make the entire exterior of the bowl K if the hand is only supporting a portion near the bottom. To make portions of faces selectable, we will have to create split lines in our part before moving into assembly and analysis. This process will be covered below. Duplicate your wine glass model in a new save file. Be sure the new file has the same units of measurement as the original!

Then, reduce the model from a full circle to a degree arc, like in Figure To do this, right click on the Revolve feature. Above the pop-up menu, click on the Edit Feature icon. Change the revolve parameters to 15 degrees.

This method is the norm when holding a snifter of brandy, however. Just a little sliver. Now we are going to add the split lines. These lines are what permit the selection of fractions of a face. To start the split lines, make a sketch consisting of three lines, spaced as in Figure Spacing of split line sketches.

This tutorial assumes that yo. The following is a summary of the key. If you are unsure about more complex Enterprise 64bit. Pro for Workstations is required for new. Note Verify that the SolidWorks Motion add-in available from the Tools menu in SolidWorks contains a checkmar k in both the left and right checkboxes. This tutorial focuses on us.

SolidWorks Motion Analysis allows you to study two major typ. SolidWorks window See Fig 1. To begin, using the left mouse button double click on the SolidWorks icon on the PC desktop screen to open the program.

If there is no icon visible the program can be started through Start - All Programs — SolidWorks You can access commands in. Accessing the Tutorials To start the Online. Selecting Simulation tab in the CommandManager displays Simulation menu items icons. SolidWorks Motion. SolidWorks Motion, used to be called. Instead of building and testing physical prototypes of the mechanism, you may use.