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3D Printing

3D Printing - It’s one thing to have an idea in your head — it’s something else to hold it in your hands. Take your 3D CAD designs from on-screen to in-hand with realistic 3D models. Test form, fit and function. Print assembly tools on the fly or manufacture small quantities of production parts.

It’s all possible with3D printers, think faster. Move quickly. Cut costs.

Additive manufacturing or 3D printing is a process of making a three-dimensional solid object of virtually any shape from a digital model. 3D printing is achieved using anadditive process, where successive layers of material are laid down in different shapes.

The 3D printing technology is used for both prototyping and distributed manufacturing.

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How to Design a Boat Hull in SolidWorks Free Form Demo

This Demonstration exhibits the New Free From Feature in SolidWorks 3D CAD Software.Learn how to create a Boat Hull from a sketch drawing using the SolidWorks Sketch Picture Feature.

About SolidWorks

A prototype is an early sample, model or release of a product built to test a concept or process or to act as a thing to be replicated or learned from. A prototype is designed to test and trial a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one.

Design and modeling

In many fields, there is great uncertainty as to whether a new design will actually do what is desired. New designs often have unexpected problems. A prototype is often used as part of the product design process to allow engineers and designers the ability to explore design alternatives, test theories and confirm performance prior to starting production of a new product. Engineers use their experience to tailor the prototype according to the specific unknowns still present in the intended design.

Prototypes are used to confirm and verify consumer interest in a proposed design whereas prototypes will also attempt to verify the performance or suitability of a specific design approach.

Differences between a prototype and a production design

Prototypes will differ from the final production variant in three fundamental ways:

Materials. Production materials may require manufacturing processes involving higher capital costs than what is practical for prototyping. Instead, engineers or prototyping specialists will attempt to substitute materials with properties that simulate the intended final material.

Processes. Often expensive and time consuming unique tooling is required to fabricate a custom design. Prototypes will often compromise by using more variable processes,

repeatable or controlled methods; substandard, inefficient, or substandard technology sources; or insufficient testing for technology maturity.

Lower fidelity. Final production designs often require extensive effort to capture high volume manufacturing detail. Often prototypes are built using very limited engineering detail as compared to final production intent, which often uses statistical process controls and rigorous testing.

SolidWorks Simulation: How to Get the Angle of Displacement

A common question we often get regarding post processing of a SolidWorks Simulation study is: Does SolidWorks Simulation have a way of displaying displacement plots as angles of displacement in the case of a torsional load? SolidWorks currently does not have this capability directly but allows us to display tangential displacements with respect to an axis. From this we can simply apply the arc length formula, S=θr, to get our angular displacement. Let's take a look at how this done in SolidWorks Simulation...

For the purpose of illustration we will use a simple torsion bar with an offset transverse load as an example. As you can see below, we have the transverse load applied to the end of a plate attached to the torsion bar which will cause a both a bending moment and torque on the bar. Our goal here is to determine the angular displacement resulting from the torque on the torsion bar.

As you can see we have the load applied to the end of the plate and have fixed one end of the torsion bar. After running the analysis and looking at the default displacement

 plot we can see the resultant displacements.

This however does not do us much good if we are looking for angular displacements. You may or may not know that under the "Advanced Options" while creating a new plot, you can define a reference plane, axis, or coordinate system. Anytime you select an axis as your reference SolidWorks automatically switches to polar coordinates. For the case of displacements we want to define a UY Displacement plot and use the axis that we want the displacements about as the reference; this will give you a plot of tangential displacements (UX and UZ give radial and axial displacements respectively).

Now that we have tangential displacements about our axis of torque we can apply the arc length equation to solve for the angle of displacements. The best way to find out the displacement at a particular point is to "Probe" a particular place on the plot. This can be done by right clicking the plot from the Simulation tree and going to "Probe". You can then select any point(s) on the plot that you want to know the angle of displacement of.

I have selected the point where the load is applied as my probe location. The probe command displays the tangential displacement at this point as well as the coordinates of the point. We know the coordinates of the axis, so we can apply the distance formula to determine the resulting distance between the axis and the point. Using this value we can divide the tangential displacement value by the distance we just calculated to get the angle of displacement.

If you want to know the angular displacements at multiple locations you can probe multiple spots or probe using "on selected entities" to get the tangential displacements at every node along an edge, for example. The values then can be exported out into a CSV file and used in excel to do the above calculation for all points.

Hopefully this can be of some benefit to those of you who have pondered this very question. If you are interested in seeing further how excel can be utilized for these calculations, you can download the sample files that I've used here.

 These files include an excel document that shows how formulas can be leveraged to calculate angular displacements for the edge shown above.