Posts Tagged ‘3DVision Technologies’

Material Models for Simulation Premium

Friday, March 20th, 2015

What Material Model should be used for a specific

Non-Linear Study?

A commonly asked question is what material model should be used for a specific Non-Linear Study?  The answer is divided into three parts.

1. What is the material in the design(Steel, Rubber, Plastic, etc.)?

2. What is happening to the material(remain elastic, plastically deform etc.)?

3. What material property data is available for the material?

Material Choice in Design

Lets discuss material choice first.  Typically metals are characterized as a linear material and act as such.  Linear materials are simplified to behave predictably under specific loading criteria.  For Linear materials the Elastic Modulus, Poisons Ratio, and Yield Strength are all assumed to be constants.  Rubber, Plastics and Composites are accepted as Non-Linear materials and immediately require more than fixed material values.  As a rule of thumb the fore mentioned grouping holds true as long as the loading conditions dictate as such.

What is Happening to the Material?

What happens to the material under load?  What happens to the material during loading is as much a factor as the original material choice when specifying a material model.  Metals typically operate with a portion of the stress strain curve known as the elastic region.  The elastic region is typically from zero stress/strain to the yield point.  The slope of this line is the Elastic Modulus. When a load is applied and then removed the geometry will return to a zero state of stress and strain.  However what happens when the model moves beyond yield.  The once Linear Material is now Non-Linear and requires a defined Stress Strain Curve.  The Stress Strain Curve dictates how the material behaves under load beyond yield. Plastics, Rubbers, and composites are already Non-Linear and require a Stress Strain curve for their definition as the linear region of their curves either does not exist or is very small.

Stress Strain

The information assumed about the material helps determine what material model can be utilized within simulation.  For some materials a simple stress strain curve is not enough and one or more of the simple tension, bi-axial tension and shear test curves is required.

 What material property data is available for the material?

SOLIDWORKS Simulation Premium contains several different material mathematical models to choose from, and covers a wide range of options to best suite the analysis being ran. Please consult the Simulation technical reference guide and help file for more information on the models and their uses.

Simulation Material Choices

A general list of materials models and its use is below.

Elastic Models: Geometry Returns To It’s Original Position After Loading

Linear Elastic Isotropic –        Linear Material with properties the same in all directions x,y,and z

Linear Elastic Orthotropic-   Linear Material with properties different in the x,y, and z directions

Non-Linear Elastic-                Non-Linear Material with elastic properties (require a stress/strain curve)

Elasto- Plastic Models: Geometry Can Plasticity Deform When Loaded and Unloaded

Plasticity von Mises-              Studies von Mises Stress values, Goes Beyond Yield

Plasticity Tresca-                    Uses Shear Criteria and more conservative than von Mises formalization

Plasticty Drucker Prager-      Approximates Granular soil

Hyper Elastic Elastomers: Large Capacity To Take Strain With Relatively Low Stress Require a combination of the three curves mentioned above.

Mooney-Rivlin(M-R)-            In-compressible Strain up to 150% derived from 3 curves

Ogden(OHE)-                          In-compressible Strain up to 500-600%

Blatz-Ko-                                   Compressible Poisson’s Ratio is assumed to be 0.25

Simulation Premium also offers a Nitinol Model and a Viscoelastic for specific applications.

The above is meant to be a general guide as to what material model to choose for specific applications.  Three main factors are involved when choosing a material model, the material itself, loading conditions/application, and the material properties.

Click Here to learn more about SOLIDWORKS Simulation Premium. 

Robert Warren

Elite Application Engineer CAE Technical Specialist 3DVision Technologies

SOLIDWORKS Model-Based Definition (MBD) Has Been Released

Monday, March 9th, 2015

With SOLIDWORKS 2015 SP2, MBD was released at the same time.  Well what is MBD?  It is an integrated drawingless manufacturing solution.  Instead of creating a typical 2D drawing, all of the needed information is placed on the 3D model.  This helps reduce errors, increases production efficiency, and support industry standards.

You might wonder how this increases production efficiency.  It will make your process more efficient because there is not a need for 2D drawing files.  All of the information is already on the 3D file so why not use it?  The point of a 2D drawing file was to communicate to manufacturing on what the final item should look like.  This has been the main delivery.  A majority of the time it took to create the 2D drawing is now saved.

2D-3D

So you might be thinking that I still need to have dimensions and add notes so that will take a bunch of time.  All the time I am saving from the 2D drawing is being placed on the 3D model.  That’s not the case and leads me into the reduction of errors.  SOLIDWORKS MBD uses a tool that has been in SOLIDWORKS since 2008; DimXpert.  DimXpert is extremely powerful in creating PMI.  It has the ability to automatically create the manufacturing dimensions with tolerance on the 3D model.

dimxpert

But the reduction of errors comes with the ability to check all the faces for a dimension and tolerance by changing the face color.

SOLIDWORKS MBD’s main job is to organize all of the PMI data.  It does this by creating custom views to represent specific dimensions.  With 2D drawings you have multiple views with specific dimensions.  You do the same process with MBD by creating custom 3D views.  The helps deliver the intended information to production with less confusion.

3dviews

How is the information delivered to production?  You have 2 options which are industry standards.  You can save the information to eDrawings or a 3D PDF.  The 3D PDF is fully customizable to match your requirements.

MBD 3DPDF

I feel MBD is a great way to save time, reduce errors, and communicate easier with manufacturing.  If you would like more information or would like to see a demo, please contact 3DVision @ 1-800-745-3136 or click here.

Josh Spencer

Elite Application Engineer, CSWE 3DVision Technologies

Available Tables in SOLIDWORKS Drawings

Friday, February 13th, 2015

I get asked about the different tables in SOLIDWORKS drawings.  I’ll go over some of these as a high level overview.  This will cover BOM, Hole Table, Revision Tables, Weldment Cut List Tables, General Table, Weld Table, Bend Table, and Punch Tables.

Closed Table Rendered in SOLIDWORKS Drawings
BOM

The Bill of Materials is a list of the components and the quantities of each needed to manufacture the end product.  This can be customized a lot to be able to show different properties, different fonts, etc.

Bill Of Materials in SOLIDWORKS Drawing

Bill Of Materials

Once you would get it looking like you want, you would want to save it out as a template so you can easily get back to same style.  If you Right Mouse Click on the table you will get the option to save it.  You can then specify it as a Template and place it with your other ones.  The next time you start a BOM, you will want to choose the one you just saved out and the columns and font will be the same.
Save as template in SOLIDWORKS Drawing
When you RMC, you will notice you can save the BOM as an excel file.  Now with it in excel, you can import it to an ERP/MRP system.

Hole Table

This is used to automatically generate hole information in a tabular format.  The table will show the location and hole size from a specified origin.

Hole Table in SOLIDWORKS Drawing

Hole Table

You also have the ability to customize it with a specific font and size.  You can also add tolerances for the locations and the hole sizes.

Revision Tables

This type of table is used to represent the latest revision of the drawing.  You can see the description of the change, the date it occurred, who did it, and the revision symbol in the drawing.

REVISION TABLE in SOLIDWORKS Drawing

REVISION TABLE

The revision table can also update the Revision Block in your title block.

Weldment Cut List Tables

A cut list is similar to a BOM.  This is used with the weldment function to represent the cut lengths for structural shapes.

CUT LIST in SOLIDWORKS Drawing

Weldment Cutlist

The cut list can again be customized like the BOM to show what is important for final manufacturing.  It has the same ability to be saved as a template and excel file.  This is only active when you have a part file that is a weldment.

General Table

This would be used when you need to type in data in the cells rather than having the software automatically generate the data.  You have the same ability as other tables.  You can split, merge, sort, save, etc this table just like the other types.

Weld Table

The weld table is a summary of weld specifications.  It will represent weld quantity, size, symbol, length, and other custom bead properties.

WELD TABLE SOLIDWORKS Drawing

Weld Table

The table will get the data from the drawing view.  If you add the weld beads to the model, it will automatically fill the table out.  If you are only placing the weld symbols on the drawing views, there is an option in the property manager to include drawing annotations.

Bend Table

BEND TABLE

Bend Table in SOLIDWORKS Drawing

Bend tables are used with Sheet Metal parts.  In place of having many callout for each bend, you can represent these in a table.  It will specify the bend direction, the angle that it needs to bend to, and the radius of the bend.

Punch Table

PUNCH TABLE

Punch Table in SOLIDWORKS Drawings

Punch tables are also used with Sheet Metal parts.  This is very similar to hole tables but in place of holes, it is used with form features.  The table will represent the location of the punch on the flat pattern, the punch ID, the quantity, and the angle between the X-axis and the tool.

Thank You

This was just a high level overview of SOLIDWORKS tables.  If you have any specific questions about them, don’t hesitate to contact us.

Josh Spencer

Elite Application Engineer, CSWE 3DVision Technologies

Monthly Best – January 2015

Tuesday, February 3rd, 2015

Did you miss a few of our articles in January? Catch up now with our Monthly Best – January 2015 recap.

1. Unilever Accerlerates Consumer Product Prototyping by 40% with 3D Printed Injection Molds

Unilever has cut lead times for prototype parts by 40% since introducing Stratasys’ PolyJet 3D printing technology into its manufacturing process.

Full Article

2. SOLIDWORKS Simulation 2015 – Self Contact

There were a number of new features added in SOLIDWORKS Simulation 2015 to help improve our analysis work.  One of those cool features is the ‘Self Contact’ option, available in Simulation Professional and Simulation Premium.  Full Article 

3. The Benefits of 3D Printing for Your Business

3D printing is at the front lines when it comes to the future of business technology. Watch the video

4. SolidWorks World 2015 : The Movie Trailer

YouTube Preview Image

5. #3DVTechTip – Center of Mass Tool

Use the Center of Mass tool to show the global center of mass of your parts and assemblies. Use Insert Model Items to display them in drawings.  The Center of Mass feature will stay at the top of the feature tree and indicates the global center of mass. Full Tip Here

Monthly Best Using the SolidWorks Center of Mass Tool

3DVision Technologies

Your destination for design and manufacturing technology

Rotating Mesh Region SOLIDWORKS FLOW SIMULATION

Friday, January 30th, 2015

The SOLIDWORKS Flow Simulation team has added powerful new functionality to their arsenal,  Rotating Mesh Regions.  Rotating mesh regions or “sliding mesh regions” allow the user to rotate geometry in the model and drive the fluid of the system.  If you are designing any device that utilizes, impellers, propellers, or other rotational apparatus Flow Simulation can provide results such as flow rate, pressure drop, velocity, and many more, all based on the rotation of the geometry.  A transient or time based study is required to use the Rotating Mesh Region.

Application of Rotating Mesh

Application of Rotating Mesh

 

Rotating Mesh Region

Rotating Mesh Region

 

If you have SOLIDWORKS Flow Simulation 2015 already loaded you can find the rotating mesh region under the rotation type “Local regions(s) (Sliding mesh).  Utilize the rotating region boundary condition as usual in the Flow Simulation Design Tree.

Analysis Settings

Analysis Settings

 

For a look at the Rotating Mesh Region please see the following link.

 

Robert Warren

Elite Application Engineer CAE Technical Specialist 3DVision Technologies

3DVision Tech Tip-Center of Mass Tool

Wednesday, January 7th, 2015

Using the SolidWorks Center of Mass Tool

Use the Center of Mass tool to show the global center of mass of your parts and assemblies. Use Insert Model Items to display them in drawings.  The Center of Mass feature will stay at the top of the feature tree and indicates the global center of mass.

 If you want to show the Center of Mass at a specific place and time in the feature tree, use the Center of Mass Reference Point (parts only), which indicates the center of mass at that point in the model.  This reference point can be used to drive dimensions in the model.

Solidworks Center of Mass Tool

Scott High

Technical Services Manager 3DVision Technologies

Make Your Voice Heard! Vote for the SOLIDWORKS World 2015 Top Ten List!

Wednesday, January 7th, 2015

Voting is NOW open on the annual SOLIDWORKS World Top Ten List!

Just folow the link below to log on to the SOLIDWORKS World 2015 section of the discussion forum. You can give the thumbs up or down to as many ideas as you like. But HURRY, voting closes on Friday, January 23, 2015.

Vote Here

The ten ideas with the most votes will become the Top Ten List for 2015. This list will be presented at SOLIDWORKS World 2015 in Phoenix, AZ in February. If you don’t vote you are passing up on an easy way to tell SOLIDWORKS how they can improve the software to meet your needs.

So please review and VOTE VOTE VOTE for submitted ideas.

SolidWorks World 2015

Randy Simmons

Application Engineer, CSWP 3DVision Technologies

Customer Spotlight- SelectTech Geospatial

Thursday, December 11th, 2014

Advancing rapid military systems development with

SolidWorks Premium

SelectTech Geospatial Customer Story

The SelectTech GeoSpatial Advanced Manufacturing Facility specializes in the rapid development, production, and delivery of command and control, intelligence, surveillance, and reconnaissance (C2ISR) systems.

The company was founded to create and manufacture C2ISR systems more rapidly than other defense contractors. To accomplish that mission, SelectTech GeoSpatial needed to use the latest 3D development technologies and lean, flexible manufacturing processes,according to Executive Director Frank Beafore.

“Our niche is being able to design and build a range of special projects on the fly,” Beafore explains. “To succeed, we need to develop, manufacture, and ship C2ISR and related systems for deployment faster than anyone else. The US Department of Defense (DOD) values contractors who can consistently deliver on time and on budget. From the very beginning, we sought out the best design and manufacturing tools available to help our people meet that standard.”

After evaluating 3D design solutions, including the Autodesk®, Inventor®, Solid Edge®, and SolidWorks® design systems, SelectTech GeoSpatial chose SolidWorks Premium software as its sole development platform. “We chose SolidWorks software because it is designed and packaged well,” Beafore recalls. “It has an intuitive user interface and provides access to a lot of complementary tools and technologies—such as finite element analysis (FEA) and rapid prototyping—in a single integrated environment.”

“I’ve used other packages, and SolidWorks is so much easier,” adds Chief Designer Beth Galang. “SolidWorks Premium provides all of the modeling tools that we need—like weldments, sheet metal, surfacing, and simulation capabilities—to quickly design, manufacture, and deliver important defense systems.”

Supporting C2ISR rapid-response demands

Since implementing SolidWorks Premium software, SelectTech GeoSpatial has supported a wide range of DOD projects, including UAS (unmanned aircraft system) ground stations, command and control units, PED modules, secure field facilities, transportable SATCOM stations, mobile data centers, UAS secure field maintenance hangars, and tactical operations control centers. The company’s string of successful projects has enabled SelectTech GeoSpatial to expand into the growing UAV (unmanned aerial vehicle) and UAS market.

“We’re used to working in tight spaces, integrating electronics, antennas, and other C2ISR system components inside small design envelopes in military aircraft,” Beafore notes. “Because we have become so proficient with SolidWorks software and have entered the UAV market, we decided to do something that no one’s ever done: design, build, and fly a small UAV plane that was completely manufactured on a 3D printer.”

Printing a UAV

Working with SolidWorks Premium software and a Stratasys® Dimension® FDM (fused deposition modeling) 3D printer, SelectTech GeoSpatial set out to prove that an agile, innovative company could produce a UAV quickly and with limited resources. Using SolidWorks software, the company cut development time on the plane by  75 percent and prototyping costs by 83 percent. The plane’s successful test  flight marked the first time that a 3D-printed UAV took off and landed sucessfully. The only parts of the plane, which has a four-foot wingspan and weighs less than five pounds, that did not come off the 3D printer are the motor, landing gear, and two carbon-fiber rods.

“The purpose of the project was to demonstrate that we can conceive, develop, and execute complex systems and get them out quickly, “Beafore stresses. “We basically built a UAV in a week and a half, and SolidWorks played a major role in that effort. Because of this project, we’re now developing a full 25-pound UAV with a 10-foot wingspan. SolidWorks software enables us to rapidly design and build UAVs.”

SelectTech Geospatial Customer Story 2            SelectTech Geospatial Customer Story 3

Seeing and testing a system before it is built

One of the reasons that SelectTech GeoSpatial is so much faster than competitors is that SolidWorks design visualization and simulation tools allow the company to present design concepts to customers and simulate component performance before building a single part. “On a recent special project, I created a walk-through animation that virtually showed what the final facility would look like,” Galang says. “the rendered system looked so real that the animation alone pushed the project through to the next step in the process.

“With SolidWorks, we can model something up in a fraction of the time of other packages,use integrated simulation tools to make sure that the design can withstand adverse conditions and use PhotoView 360 to show the system in photorealistic detail,” Galang adds. “SolidWorks lets is simultaneously create, test, build, and demonstrate designs, which results in faster deployment.”

Click Here to Learn More About SOLIDWORKS Premium

Cody Markham

Assistant Marketing Manager 3DVision Technologies

2015 Flow Simulation Compare Tool Improvements

Monday, November 24th, 2014

Every new release of Flow Simulation adds more functionality, faster solution times, and customer requested enhancements.  One of the 2015 enhancements is the Study Compare Tool overhaul.  In 2014 a user could compare any active plot and goals between projects in the same model.  This is very useful functionality when comparing between different design options under the same flow conditions.  Only being able to compare active plots lead to some drawbacks and some fumbling for what you actually wanted to see.  The goal plots gave the engineer only a table view of the reported values.  Great for a quick numerical comparison, but this left the user manipulating the data in Excel to get nice visual graphs.

 

This is where 2015 Flow Simulation Compare Tool comes in.  2015 Compare improvements allow the user to directly compare all the generated plots in the project, not just the active one.  If they do not want all the plots they can pick and choose which ones they want to see though a check box interface.  The comparison does not end there, we now can compare XY plots, Tabular Data, and other enhanced chart options.  New to the goal plot is a series of enhanced display options allowing the user to display the goal plot data in bar chart, scatter plot, and over/under displays.

Compare Interface

 

 

Pressure Chart

Bar Chart

 

To access the Flow Simulation Compare Tool, go to Tools>Flow Simulation>Results>Compare, or choose the compare Icon on the Flow Command manager.

Compare Results

Compare Results

 

2015 Flow Simulation Compare Tool enhancements, improve the direct outputs from Flow Simulation,  greatly decrease the time to get to the important data, give the engineer better knowledge of the Project results.  Flow Simulation in 2015 is helping make the user, Better, Faster, and Smarter.

Globe Valve Flow

Robert Warren

Elite Application Engineer CAE Technical Specialist 3DVision Technologies

3DVision Technologies Open House

Wednesday, July 30th, 2014

3D Printing Open House

Hosted by 3DVision Technologies

Thursday, August 14th 10:00am-2:00pm

Come and see the Stratasys line of Fortus and Objet printers and learn more about 3D printing and how it can save you time and money.

Join us for a casual and informative Open House to learn about the latest advances in 3D printing and materials and meet industry experts.

  • 3D Printer Demonstrations
  • Materials Discussion
  • View FDM and Polyjet Parts
  • Applications Discussion

Guest Speaker Presentations:  10:30am, 11:30am and 1:30pm

Win a MakerBot Replicator Mini

Guess how many years 3DVision Technologies has been in the 3D printing business and you’ll be entered to win a MAKERBOT REPLICATOR MINI!

Open House Makerbot Replicator Mini

Hint:  3 of the 4 highest goal scorers in the World Cup wore this number

 

Registration by August 7th is required, space is limited so don’t delay. Hope to see you there!

 

Click Here to Register>>

Location:

3DVision Technologies

11500 Northlake Drive Suite 122

Cincinnati, OH 45249

Agenda:

10:00am: Meet and Greet

10:30am: Guest Speaker

11:30am: Guest Speaker

1:30pm: Guest Speaker

2:00pm: Final Questions

 

 

Cody Markham

Assistant Marketing Manager 3DVision Technologies

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