CATI Tech Notes

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

SOLIDWORKS: Making Sense of Simulation Meshing – Part 1

Making Sense of SOLIDWORKS Simulation Meshing – Part 1   As an Application Engineer specializing in SOLIDWORKS Simulation, I often get asked, “How do I know if I have a good mesh?” The simple answer is, it’s not so simple. This is the first blog in a 3 part series that I will be posting about meshing. In this blog we will discuss meshing considerations for study types and purposes as well as mesh convergence considerations. The next two blogs in the series will talk discuss mesh quality tools, what they mean, and the types of meshers.   Meshing is a term for the process of discretizing CAD geometry. For the

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Posted in Design Validation, Simulation, SOLIDWORKS Tips and Tricks

SOLIDWORKS: Simulation Load – Torque Vs Moment of Force

Simulation Load – Torque Vs Moment of Force   What is the difference between torque and moment of force? Depending on who you talk to, you will get different and confusing answers. The truth is that moment of force (often known simply as moment) and torque are equivalent. Not so in SOLIDWORKS Simulation, though. We will investigate the differences between the two.   I encountered a small issue with torque loads in simulation and after inspecting the help file, I was still confused. I spent some time to clear up this issue and hopefully you will find this information useful.   The issue that started this quest for understanding was

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

SOLIDWORKS: Blended Curvature Based Mesh in SOLIDWORKS Simulation

Blended Curvature Based Mesh in SOLIDWORKS Simulation   Meshing a part appropriately might be tenuous at times, but it is certainly a lot easier in SOLIDWORKS than just about any other software. We don’t want to set the expectation that meshing is a problem for SOLIDWORKS. Getting a good aspect ratio around the smaller geometry can drive you and your computer a bit crazy, especially if you don’t know the smallest size of your geometry. SOLIDWORKS introduced the blended curvature based mesh in SOLIDWORKS 2016. Let’s take a look at the user interface:     It looks very similar to the curvature based mesh, including the options of max/min element size,

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Posted in Design Validation, General Info, Simulation

SOLIDWORKS: Flow Simulation Mesh Visualization Changes Implemented in SW2016

Flow Simulation Mesh Visualization Changes   In SOLIDWORKS Flow Simulation, accurately and efficiently designing the mesh to capture the solid/fluid interface is critical to producing quality results. Doing so can be a challenge, so it’s important to see the mesh at the boundary to support further refinement, as needed.   Flow Simulation 2015 and previous releases allowed visualizing the mesh using “Mesh 3D View”, a tool that was a bit cumbersome to use and didn’t produce a clear view of the interface, as in these plots of fluid and partial cells.       Enter Flow Simulation 2016 and its new mesh view functionality, which has eliminated Mesh 3D View.

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Posted in Daily Dose.....of SolidWorks Support, Simulation

SOLIDWORKS: Task Scheduler for Simulation Runs

Task Scheduler for Simulation Runs   By now, must people know the benefit that the “Run All Studies” and “Run Specified Studies” that SOLIDWORKS Simulation provides. These functions are limited in that they only work for a single part/ assembly file with or without different configurations. However, what happens when there is more than one file with multiple studies that need to be solved overnight? To accomplish this, we can turn to the often underused SOLIDWORKS Task Scheduler. Task scheduler allows users to automate a multitude of repetitive tasks including importing/ exporting files, Updating files, printing, rendering, and of course, updating Simulations in SOLIDWORKS.   In order to run SOLDIWORKS

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

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

SOLIDWORKS: How the Shell Can I Manage My SOLDIWORKS Simulation Shell Elements?

How the Shell Can I Manage My SOLDIWORKS Simulation Shell Elements?   If you were enticed by the title of this blog, then you are probably already aware of what a shell is and why they are so valuable. For those who are not aware, they are, in this context, a 2D element used in SOLIDWORKS Simulation. I will not bore you with too many details about shell elements, but instead show you some nifty techniques to help you manage and create shells more efficiently. Shells are defined by manually inputting several properties each time a body is converted to a shell element from a solid element. Who would want

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

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

SOLIDWORKS: Simulation Beam Elements with Non-Planar Bonds

Simulation Beam Elements with Non-Planar Bonds   Recently I came across an issue bonding beam elements to non-planar faces on a body meshed as solid. It seemed like good information to share. Below is a simplified model of the model that was being simulated using SOLIDWORKS Simulation:         The red shaft was being treated as a beam element and loaded axially. The bottom of the shaft was fixed and the outside ring of the green body or “ring” as I will refer to it is fixed as well. The two parts in the assembly are bonded where the outer face of the shaft meets the inner face

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

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

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