Solving a simulation

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From the course by Autodesk

Autodesk Fusion 360 Integrated CAD/CAM/CAE

122 ratings

Autodesk

Autodesk Fusion 360 Integrated CAD/CAM/CAE

122 ratings

Course 2 of 5 in the Specialization CAD and Digital Manufacturing

Design, engineering, and manufacturing are undergoing a digital transformation, and the need for a collaborative product development environment is becoming an ever-growing requirement. Autodesk® Fusion 360™ meets this need by connecting CAD, CAM, and CAE in a single cloud-based platform unlike any other tool of its kind. This course builds upon digital manufacturing trends and foundational CAD concepts discussed in Course 1 of this series by introducing Fusion 360 as a problem-solving tool. In this course, we take the next step in connecting CAD, CAM, and CAE through a series of short exercises on 3D modeling, rendering, simulation, and computer aided manufacturing. After completing this course series, you will be able to: • Demonstrate knowledge of and apply job entry level skills in computer aided design, computer aided engineering (CAE) and computer aided manufacturing (CAM) using Fusion 360 software. • Describe and apply design based workflows for design, engineering and manufacturing using Fusion 360 software. • Utilize Fusion 360 cloud based collaboration features for project sharing and design review.

From the lesson

Simulation

Simulation technology is changing the design process. Simulation tools are becoming highly accurate, fast and powerful and can help you better understand how functional a design is and ways in which to improve it. In this lesson, you explore Fusion 360 Simulation features and learn how to take advantage of simulation feedback through the design process to explore and test your design ideas.

Static stress overview2:16

Setting simulation study material3:24

Creating a load1:30

Adding a constraint1:46

Automatic contact sets1:16

Mesh settings2:47

Simulation pre-check1:35

Solving a simulation5:52

Meet the Instructors

Autodesk Education

It's time to run the study and review the results

using the FSAE steering wheel simulation file.

We've now done all the work to set up the study.

Let's turn off the display of the mesh model.

Go to the solve drop-down, and select solve.

The dialog will appear listing the options regarding how to solve the study,

including the option to solve on the cloud,

or solve using local processors.

As in a side, some of the advanced study styles

cannot be solved locally as they are too process intensive.

So, they use cloud solving by default.

In the active document section,

we can choose to solve all studies if we have more than one study,

or we can simply select the studies we wish to focus on.

Next, a status report on whether or not it's ready to be solved,

if it's already been solved,

or if there are errors in the file, will appear.

Since we only have one study to solve,

we'll click solve one study.

Job status dialog box will now open.

We can follow along with the status of the study.

The job status can be closed,

and the simulation will continue to run.

When the study is complete,

the model will display colors correlating with the legend in the lower right.

This legend can be changed to display

the results for different parts of the study of the model.

On the right-hand side of the screen is a results dialog.

With this model, the safety factor is reporting at

15 which is the highest number that will display.

And this tells me that if my loads and constraints are correct,

my design is overbuilt based on the need for lightweight components in the car.

Also in this dialog,

we can adjust the default values for safety factor targets,

review the recommendations that are offered by the system,

we can change defamation display's scale,

and we can disable the option to automatically see this dialog.

If you decide to close the dialog,

you can always restore it by selecting the icon with the double check mark

next to the study display option near the legend.

Looking more closely at the model in the canvas,

we can see the display of the original shape with the wireframe,

and a scaled version of the deformed model.

What is displayed in color is

an exaggerated representation of what is happening to the model under load.

This scaling is intended to make it easier for us

to understand what is happening visually.

We can change the display by going to the results

drop-down where we can toggle off and on the wireframe visibility,

as well as modify the deformation scale to be more

exaggerated to show the actual deformation,

or we can completely turn the deformation off.

Let's use the actual setting.

Coming back to the safety factor,

at 15, we have a lot of room to refine this design.

Based on the results, we could look at changing the thickness of the component,

enlarging the cut outs,

or making other modifications.

Let's take a look at some of the options we have to view the results.

Let's change to stress.

The screen display and legend will update with the results,

and we can choose different types of stress that can be displayed.

The default is von mises,

but we can show the results for principle,

normal, or shear stresses.

The legend on the right displays the minimum to maximum values,

and we can limit the display to a specific range using

the arrow icons to focus on a portion on the model that falls within the selected range.

Zooming in on the area,

we can see a concentration of stress around the bolt holes,

and where the components come in contact with one another.

By being able to focus on specific ranges,

we can remove portions of the model where there is no concern to

more closely look at the areas that need more scrutiny.

Let's change the display to displacement.

From the initial results display,

we know that the plate is twisting around the shaft and on itself,

but by switching to this display,

we can see the numbers related to the result.

The maximum displacement listed is just over 2000 of a millimeter.

This of course is very minimal,

but we can use the adjustable scale to see what areas fall within this range.

We can easily look at other types of results including reaction force,

strain, or contact pressure.

The ability to visually review the results makes it easy to not only know what they are,

but if we've set up the study properly, get meaningful results.

Looking more closely at some of the areas of elevated strain,

they seem to be unexpected.

A higher strain in the sharp corner of the steering shaft is logical,

but showing strain at the edge of where the steering shaft and the base-plate meet,

makes me wonder if the contact sets that were automatically generated should be reviewed.

By going to the browser and turning off the visibility of the steering shaft,

we can more easily see the strain map on the surface of

the base-plate where we see very little strain on the splines,

a higher concentrations on the edge of the steering shaft which would

most likely be able to slip on the surface of the base-plate.

This suggests that we probably need to modify

the contacts manually to ensure the correct engagement.

For now, let's focus on learning to interrogate the results,

navigate through the options,

and adjust the display.

Let's switch back to the stress display,

and go to the legend options where we can choose to turn the legend off or on,

change the size, or select whether the display of the results will be banded

or have a smooth transition.

If you make changes to the display of the legend,

it will not affect the actual result,

only how you see them.

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