CATI Tech Notes

SOLIDWORKS Tips and Tricks and Info on Professional 3D Printing with Stratasys from the Technical staff of CATI

SOLIDWORKS: Meshing Errors in SOLIDWORKS Plastics 2016

Meshing Errors in SOLIDWORKS Plastics 2016   When trying to mesh a runner system with the part in SOLIDWORKS 2016, you may end up getting errors that don’t give you a clue to what is wrong. For instance, take a look at this message: when sewing connector, it without any face error!! This message came up when I was creating a solid mesh. Not sure if the message is a direct translation from another language but it doesn’t give you any direction on what is causing it or even what to change.     I had to follow some logic in this situation. Seeing that the runner mesh was not

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Posted in Daily Dose.....of SolidWorks Support, Design Validation, General Info, Simulation

Creaform 3D Scanners: Reverse Engineering the Death Star

Reverse Engineering the Death Star   No, I’m not on my way to becoming the next Emperor Palpatine, so no worries there.   Last Christmas season, my family found a Death Star Planetarium while shopping.  We had the idea of using it as a tree topper for our Christmas tree.  Our only problem was how to get it to stay.  It came with a stand, but it didn’t immobilize the Death Star. I could get calipers and other measuring tools out, but that doesn’t result in the best accuracy.  The answer came in using the Creaform 3D scanners.  I have only been using scanners and their software VXelements for a

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Posted in 3D Scanning, Daily Dose.....of SolidWorks Support, Design Validation, Digital Prototyping, Modeling, Rapid Prototyping

SOLIDWORKS World 2017: Highlights – 3D Interconnect

SOLIDWORKS World 2017 Highlights – 3D Interconnect   SOLIDWORKS 2017 adds a new capacity for working with files from other CAD systems. 3D Interconnect allows you to use existing CAD data from other packages without the need to convert them first. You insert them into an assembly the same way as any other part.       This part was created from a PTC file and had a slot added to it. 3D Interconnect also recognizes revisioning, so you can right click on an imported file and update it for a new revision:       This results in an updated model that had no errors referencing the sketch/sketch plane

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Posted in Daily Dose.....of SolidWorks Support, Design Validation, Digital Prototyping, General Info, SOLIDWORKS Tips and Tricks, SOLIDWORKS What's New

SOLIDWORKS: Nonlinear Material Models in SOLIDWORKS Simulation

Nonlinear Material Models in SOLIDWORKS Simulation   If you are using SOLIDWORKS Simulation Premium, you have access to the Nonlinear study type. One of the advantages of this study type over the Linear Static study is the ability to apply loads and boundary conditions that vary over time. Another is the access to multiple material models that represent nonlinear material behaviors:   Nonlinear Elastic Hyper-elastic Elasto-plastic Super Elastic Nitinol Linear Visco-elastic Creep   Let me give you a brief description of each.   Nonlinear Elastic Model   For those materials that don’t exhibit any linear behavior, e.g., a stress-strain relationship like the graph below, the nonlinear elastic material model is

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Posted in Design Validation, Simulation

Stratasys 3D Printing: Discovering Your 3D Printer’s Capabilities – Part 1

Discovering Your 3D Printer’s Capabilities – Part 1   This is the first of a series on ideas to understand the capabilities and limitations of your 3D Printer.  When you know what your machine can achieve it can be applied to significantly aid your part design as well as throughput and quality.   Regardless of the 3D printer you are using, it is drawing a 2D image in multiple layers to create the 3rd dimension.  With this in mind, most printers will require some kind of support or brace to prevent overhanging layers on top of a previous layer from collapsing.  Some machines, typically powder based machines, will use the unused material

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Posted in Design Validation, Digital Prototyping, Rapid Prototyping

15 Reasons to Attend SOLIDWORKS World 2017 #SWW17

15 Reasons to Attend SOLIDWORKS World 2017 #SWW17   With SOLIDWORKS World just a few weeks away and if you are looking for a reason to justify to your company why you should attend SOLIDWORKS World this year, the team at Computer Aided Technology, MCAD Technologies, InFlow and our customers are giving you 14 quality reasons to attend. The Technical Teams from CATI, MCAD and InFlow have 11 different presentations and we have 3 customers who are presenting their own material.   If you are not familiar with SOLIDWORKS World, it is SOLIDWORKS‘ annual 3 day conference that you can join more than 5,000 of your peers and select from

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Posted in CAD Administration, Daily Dose.....of SolidWorks Support, Data Management, Design Validation, Redneck Workarounds, Simulation, SolidWorks Electrical, SOLIDWORKS Tips and Tricks

SOLIDWORKS: Difference Between Ambient Temperature & Bulk Temperature in Simulation

Difference Between Ambient Temperature & Bulk Temperature in SOLIDWORKS Simulation   When creating a transient Thermal study in SOLIDWORKS, you are asked to input two temp settings. One of which is in the Temperature feature, labeled as Initial Temperature. This setting is for the air around model.     The other setting exists in the Convection feature. You are asked to input in a Bulk Ambient Temperature. This setting sets the initial temp of the model.       Ketul Application Engineer Computer Aided Technology

Posted in Daily Dose.....of SolidWorks Support, Design Validation, General Info, Simulation

SOLIDWORKS: Using Design Checker to Change Sheet Formats

Using SOLIDWORKS Design Checker to Change Sheet Formats   One of the more useful utilities that you get with SOLIDWORKS Professional and Premium licenses is the SOLIDWORKS Design Checker program. This program allows you to capture your drafting and modeling standards into a simple user interface. Then use these rules to check against your completed files to find little mistakes where the drawing didn’t quite follow the company’s rules.   Sometimes the user might make a drawing, only to find out that something has been changed on the company’s title block. Company name change, address update or perhaps a simple change with tolerance or layout of the title block itself.

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Posted in Daily Dose.....of SolidWorks Support, Design Validation, SOLIDWORKS Tips and Tricks

SOLIDWORKS: Leveraging Configurations in Simulation Products

Leveraging Configurations in SOLIDWORKS Simulation Products   If you use any of the SOLIDWORKS products related to simulation, i.e., Simulation (Finite Element Analysis-FEA), Flow (Computational Fluid Dynamics-CFD) or Plastics (Injection Molding) and haven’t been taking advantage of configurations, then this information is for you!   The SOLIDWORKS configuration functionality allows for multiple “What-if?” design ideas managed in the same file, and the simulation products can take advantage of this great feature, giving you the ability to analyze each design separately for easy comparison of results. If you aren’t yet familiar with configurations, the following images of the configuration manager show three configurations of an assembly with multiple component suppression states:

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Posted in Daily Dose.....of SolidWorks Support, Design Validation, Simulation, SOLIDWORKS Tips and Tricks

Stratasys 3D Printing: Photoelasticity with PolyJet

Photoelasticity with PolyJet   Photoelasticity is a visual method to determine the stress distribution of a part geometry.  Unlike analytical methods of stress calculations, photoelasticity gives a fairly accurate picture of stress distribution around any imperfections in the actual geometry.  This method can be an important tool for identifying critical stress concentration in irregular geometries.   The principal of photoelasticity is based on rays of light passing through certain transparent materials with two refractive indices to create a phenomenon of an isochromatic image known as ‘Birefringence’ or double refraction.  This phenomenon is similar to light separated by an optical prism or crystal.   While the definition above may sound complex, the practical implementation

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Posted in Daily Dose.....of SolidWorks Support, Design Validation, Digital Prototyping, Modeling, Rapid Prototyping, Simulation

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