Mechanical Updates in ANSYS 2019 R2 – Webinar

With ANSYS structural analysis software, users are able to solve more complex engineering problems, faster and more efficiently than ever before. Customization and automation of structural solutions is much easier to optimize thanks to new and innovative finite element analysis (FEA) tools available in this product suite. 

Once again, ANSYS is able to cement their role as industry leaders when it comes to usability, productivity, and reliability; adding innovative functionality to an already groundbreaking product offering. ANSYS structural analysis software continues to be used throughout the industry, and for good reason as it enables engineers to optimize their product design and reduce the costs of physical testing. 

Join PADT’s Specialist Mechanical Engineer Joe Woodward, for an in-depth look at what’s new in the latest version of ANSYS Mechanical, including updates regarding: 

  • Software User Interface
  • Topology Optimization
  • Rigid Body Dynamics
  • Post Processing
  • And much more
Natural frequency study of engine block in ANSYS Mechanical

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All Things ANSYS 041: Simulating Additive Manufacturing in ANSYS 2019 R2

 

Published on: July 15th, 2019
With: Eric Miller & Doug Oatis
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Lead Mechanical Engineer Doug Oatis, to discuss the tools that make up the ANSYS Additive family of products (Additive Suite, Additive Print, & Additive Prep), and how those tools help to make 3D printing more effective and easier to navigate.

If you would like to learn more about what’s available in this latest release check out PADT’s webinar on Additive Manufacturing Updates Updates in ANSYS 2019 R2 here: https://bit.ly/2JHWYxn

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Automating Subsea Design (or How I Learned to Love Parameters)

In a previous life, I worked in the maritime and offshore energy industries and used ANSYS as part of my daily routine in structural design. I eventually discovered myself in a position where I was designing subsea equipment for use in offshore oil and gas fields. One thing I quickly discovered was that although subsea structures tend to be fairly simplistic looking (think playground equipment…but 10000 feet underwater) there are multiple design factors that can easily cause a domino effect that would require redesign(s). Whether it was a change brought upon by the client, tool manufacturer, or to satisfy the whims of marine warranty companies, there was always a need to evaluate multiple variants of any subsea structure.

Sounds like a very reactive process, right? So how can we bring this process into a more streamlined analysis workflow within ANSYS? Just use parameters with SpaceClaim and ANSYS Mechanical!

So what can parameters do to aid in this process?

  • Remove repetitive tasks
  • Account for geometric changes to CAD models
  • Use a range of values for material properties
  • Create associative connections between CAD models and ANSYS results
  • Allow for automatic goal driven design exploration

Now let’s look at some common use cases for parameters that I’ve run into in the past:

Accelerations for Onboard Equipment and Cargo

Cargo transported on the ocean is subject to the same accelerations that affect the vessel transporting it (surge, sway, heave, pitch, roll, and yaw). These accelerations are then combined into three representative accelerations and applied in multiple loadcases.

Typically, these loadcases are resolved in independent analysis systems but we can remove all that fluff with a simple parameter driven analysis. All one has to do is tag inputs and result items as parameters and then input values for each load case (or Design Point). In this case I have selected the XYZ components of an acceleration input applied to a mass point as well as the total deformation and maximum equivalent stress. With the push of a button ANSYS will then solve all of these design points and will amend the table to show the selected results corresponding with each design point. Results from the Design Points can be uploaded individually but this parametric analysis has made it very easy for us to determine which Design Points / load cases have the greatest influence on the design.

Geometry Influence Study

So one of the questions often asked during the design process is “Will the design work after we change this dimension to compensate for X?” which is often followed by a discussion on robustness (which is then followed by a change order). So let’s skip the discussion middle-man and move to be proactive by using parameters to quantify just how much we can change our geometry before a problem arises.

Here we have an example subsea Pipeline End Termination (PLET) structure and let’s say a client has asked us to verify if this design can work for various pipeline sizes. The PLET has some major parts that can be influenced by this change: The pipeline clamp, cradle, flanges, ball valve, and bulkhead.

Because we can use parameters there’s no need to make a new model. Merely tag items you wish to create parameters for in SpaceClaim:

Then ANSYS Workbench will start to populate its parameter tables accordingly:

We can then make certain parameters dependent on others, or define them via simple expressions. In this way we can enforce clearances and relations between the various bodies in our model.

From here all we have to do is define our variables for our future analyses:

Then tell ANSYS to solve all the design points with a single click. Note that users can create charts and tables before the solve and ANSYS will populate these live during the solution process. Individual design point results and geometries can also be reviewed at any time.

For this particular analysis we provided the same load to each Design Point but a good next step would be to set a goal driven analysis and have a range of loadings on the pipeline end of the PLET to represent various installation conditions.

Parameters are a very powerful tool within the ANSYS toolbox. They can remove repetitive tasks within FEA, easily create loadcases, and address concerns about design robustness by letting ANSYS and SpaceClaim handle CAD model rework.

That’s it for this blog post! I’ll be creating a few offshore industry-specific posts in the future as well so stay tuned!

Simulation for Additive Manufacturing In ANSYS 2019 R2 – Webinar

Additive manufacturing (3D Printing) has been rapidly gaining popularity as a true manufacturing process in recent years. ANSYS’ best-in-class solution for additive manufacturing enables simulation at every step in your AM process, and helps to optimize material configurations, and machine & parts setup before printing begins. 

Through the use of ANSYS tools such as Additive Suite & Additive Print, paired with topology optimization capabilities in ANSYS Mechanical Workbench, the need for physical process of trial-and-error testing has been greatly reduced. 

Join PADT’s Simulation Support and Application Engineer Doug Oatis for an exploration of the ANSYS tools that help to optimize additive manufacturing, and what new capabilities are available within them when upgrading to ANSYS 2019 R2. This presentation includes updates regarding:

  • Archiving materials no longer in use
  • Visualization of AM process
  • AM overhang angles
  • Preview part & support
  • And much more

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All Things ANSYS 040: Live From the 2019 ASME Turbo Expo – CFD Applications for Turbomachinery

 

Published on: July 1st, 2019
With: Eric Miller, Robin Steed of ANSYS, & Chris Robinson of PCA Engineers Limited
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by ANSYS CFX & Turbo Tools Lead Technical Product Manager Robin Steed, and Managing Director at PCA Engineers Limited, Chris Robinson, live at the 2019 ASME Turbo Expo in Phoenix Arizona, for a discussion on the past, present, and future of ANSYS CFD and its use in the realm of turbomachinery. Both Robin and Chris have multiple years of experience working in this industry, and their expertise provided some fascinating insight into what this tool is all about.

If you would like to learn more about what’s available in the latest CFD update check out PADT’s webinar on Fluids Updates in ANSYS 2019 R2 here: https://bit.ly/2J6l5We

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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All Things ANSYS 039: Updates for Design Engineers in ANSYS 2019 R2

 

Published on: June 17th, 2019
With: Eric Miller, Ted Harris, & Tom Chadwick
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Simulation Support Manager Ted Harris, and Senior CFD Engineer Tom Chadwick for a discussion on what new capabilities (beta or otherwise) are available for design engineers in the latest updates made to Discovery Live in ANSYS 2019 R2.

If you would like to learn more about this update and see the tool in action, along with others in the 3D Design family of products (Discovery AIM, SpaceClaim & Live) check out PADT’s webinar on the topic here: https://bit.ly/2KfO0tK

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Fluids Updates in ANSYS 2019 R2 – Webinar

ANSYS CFD goes beyond qualitative results to deliver accurate quantitative predictions of fluid interactions and trade-offs. These insights reveal unexpected opportunities for your product — opportunities that even experienced engineering analysts can miss.

Products such as ANSYS Fluent, Polyflow, and CFX work together in a constantly improving tool kit that is developed to provide ease of use improvements for engineers simulating fluid flows and it’s impacts on physical models.

Join PADT’s Simulation Support and Application Engineer, Sina Ghods, for a look at what is new and improved for fluids-related tools in ANSYS 2019 R2. This presentation includes updates regarding:

A new fluent experience

Parallel Mosaic-enabled meshing

Discrete Phase Modeling

Creating high-quality meshes for complex models

Transient elasticity for fluid structure interaction

And much more

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3D Design Updates in ANSYS 2019 R2 – Webinar

When it comes to the exploration of rapid 3D design, simulation provides a more efficient and optimized workflow for design engineers looking to streamline product development and improve product performance. The toolkit of flagship ANSYS 3D design products made up of Discovery SpaceClaim, Discovery Live, and Discovery AIM allow users to build, and optimize lighter and smarter products with an interface easier to use than most other simulation products. 

Users can delve deeper into the details of a design with the same accuracy as other, more robust ANSYS tools, all while refining their concept and introducing multiple physics simulations to better account for real-world conditions.

Join PADT’s Simulation Support Manager Ted Harris, for a look at what’s new for this line of products with the release of ANSYS 2019 R2. Explore updates for these three tools including:

  • Shared Topology
  • Meshing
  • Navigation
  • Modal Supports 
  • Multi-physics Coupling
  • Topology Optimization 
  • And much more

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All Things ANSYS 038 – Simulating Multibody Dynamics More Accurately with ANSYS Motion

 

Published on: June 3rd, 2019
With: Eric Miller & Jim Peters
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Senior Staff Technologist, Jim Peters for a discussion on the benefits of using ANSYS Motion to enable fast and accurate analysis of rigid and flexible bodies, and give accurate evaluation of physical events through the analysis of the mechanical system as a whole. ANSYS Motion uses four tightly integrated solving schemes: rigid body, flexible body, modal and mesh-free EasyFlex. This gives the user unparalleled capabilities to analyze systems and mechanisms in any desired combination.

If you would like to learn more about this update and see the tools in action, check out PADT’s webinar covering ANSYS Motion here: https://bit.ly/2MsRATh

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Meshing Updates in ANSYS 2019 R2 – Webinar

An intelligent, high-quality mesh is at the core of any effective simulation based model; creating the basis for what will help to drive valuable results for even the most complex engineering problems.

Among a variety of tools in ANSYS 2019 R2 are enhanced meshing capabilities that can help reduce pre-processing time and provide a more streamlined solution.

Join PADT’s Specialist Mechanical Engineer, Joe Woodward for a look at what new meshing capabilities are available in the latest release of ANSYS. This presentation will focus predominately on updates regarding:

ANSYS Mechanical Meshing
Batch Connections
Axisymmetric Sweep
Layered Tetrahedron Enhancements
Local Sizing Enhancements
SpaceClaim Meshing
Parameter Management
Direct Modeling/Meshing
Hex Meshing
Block Decomposition

And much more!

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“Equation Based Surface” for Conformal and Non-Planar Antenna Design

ANYSY HFSS provides many options for creating non-planar and conformal shapes. In MCAD you may use shapes such as cylinders or spheres, and with some steps, you can design you antennas on various surfaces. In some applications, it is necessary to study the effect of curvatures and shapes on the antenna performance. For example for wearable antennas it is important to study the effect of bending, crumpling and air-gap between antenna and human body.

Equation Based Surface

One of the tools that HFSS offers and can be used to do parametric sweep or optimization, is “Draw equation based surface”. This can be accessed under “Draw” “Equation Based Surface” or by using “Draw” tab and choosing it from the banner (Fig. 1)

Fig. 1. (a) Select Draw -> Equation Based Surface
Fig. 1. (b) click on the icon that is highlighted

Once this is selected the Equation Based Surface window that opens gives you options to enter the equation with the two variables (_u, _v_) to define a surface. Each point of the surface can be a function of (_u,_v). The range of (_u, _v) will also be determined in this window. The types of functions that are available can be seen in “Edit Equation” window, by clicking on “…” next to X, Y or Z (Fig. 2). Alternatively, the equation can be typed inside this window. Project or Design Variables can also be used or introduced here.

Fig. 2. (a) Equation Based Surface window
Fig. 2. (b) Clikc on the “…” next to X and see the “Edit Equation: window to build the equation for X

For example an elliptical cylinder along y axis can be represented by:

This equation can be entered as shown in Fig. 3.

Fig. 3. Elliptical surface equation

Variation of this equation can be obtained by changing variables R1, R2, L and beta. Two examples are shown in Fig. 4.

Fig. 4. Elliptical surface equation

Application of Equation Based Surface in Conformal and Non-Planar Antennas

To make use of this function to transfer a planar design to a non-planar design of interest, the following steps can be taken:

  • Start with a planar design. Keep in mind that changing the surface shape can change the characteristics of the antenna. It is a good idea to use a parameterized model, to be able to change and optimize the dimensions after transferring the design on a non-planar surface. As an example we started with a planar meandered line antenna that works around 700MHz, as shown in Fig. 5. The model is excited by a wave port. Since the cylindrical surface will be built around y-axis, the model is transferred to a height to allow the substrate surface to be made (Fig 5. b)
Fig. 5. Planar meandered antenna (a) on xy plane, (b) moved to a height of 5cm
  • Next, using equation based surface, create the desired shape and with the same length as the planar substrate. Make sure that the original deisgn is at a higher location. Select the non-planar surface. Use Modeler->Surface->Thicken Sheet … and thicken the surface with the substrate thickenss. Alternatively, by choosing “Draw” tab, one can expand the Sheet dropdown menu and choose Thicken Sheet. Now select the sheet, change the material to the substrate material.
Fig. 6. Thicken the equation based surface to generate the substrate
  • At this point you are ready to transfer the antenna design to the curved surface. Select both traces of the antenna and the curved substrate (as shown in Fig. 7). Then use Modeler->Surface->Project Sheet…, this will transfer the traces to the curved surface. Please note that the original substrate is still remaining. You need not delete it.
Fig. 7. Steps for transferring the design to the curved surface (a)

Fig. 7. Steps for transferring the design to the curved surface (b)

Fig. 7. Steps for transferring the design to the curved surface (c)
  • Next step is to generate the ground plane and move the wave port. In our example design we have a partial ground plane. For ground plane surface we use the same method to generate an equation based surface. Please keep in mind that the Z coordinate of this surface should be the same as substrate minus the thickness of the substrate. (If you thickened the substrate surface to both sides, this should be the height of substrate minus half of the substrate thickness). Once this sheet is generate assign a Perfect E or Finite Conductivity Boundary (by selecting the surface, right click and Assign Boundary). Delete the old planar ground plane.
Fig. 8. Non-planar meandered antenna with non-planar ground

Wave Port Placement using Equation Based Curve

A new wave port can be defined by the following steps:

  • Delete the old port.
  • Use Draw->Equation Based Curve. Mimicking the equation used for ground plane (Fig. 9).
Fig. 9. Use Equation Based Curve to start a new wave port (a) Equation Based Curve definition window (b) wave pot terminal created using equation based curve and sweep along vector
  • Select the line from the Model tree, select Draw->Sweep->Along Vector. Draw a vector in the direction of port height. Then by selecting the SweepAlongVector from Model tree and double clicking, the window allows you to set the correct size of port height and vector start point (Fig. 10).
  • Assign wave port to this new surface.
Fig. 10. Sweep along vector to create the new wave port location

Similar method can be used to generate (sin)^n or (cos)^n surfaces. Some examples are shown in Fig. 11. Fig. 11 (a) shows how the surface was defined.

Fig. 11. (a) Equation based surface definition using “cos” function, (b), (c), & (d) three different surfaces generated by this equation based surface.

Effect of Curvature on Antenna Matching

Bending a substrate can change the transmission line and antenna impedance. By using equation based port the change in transmission line impedance effect is removed. However, the overall radiation surface is also changed that will have effects on S11. The results of S11 for the planar design, cylindrical design (Fig. 8), cos (Fig. 11 b), and cos^3 (Fig. 11 c) designs are shown in Fig. 12. If it is of interest to include the change in the transmission line impedance, the port should be kept in a rectangular shape.

Fig. 12. Effect of curvature on the resonance frequency.

Equation based curves and surfaces can take a bit of time to get used to but with a little practice these methods can really open the door to some sophisticated geometry. It is also interesting to see how much the geometry can impact a simple antenna design, especially with today’s growing popularity in flex circuitry. Be sure to check out this related webinar  that touches on the impact of packaging antennas as well. If you would like more information on how these tools may be able to help you and your design, please let us know at info@padtinc.com.

You can also click here to download a copy of this example.

All Things ANSYS 037 – Optimizing the Industrial Internet of Things with ANSYS Digital Twins

 

Published on: May 20th, 2019
With: Eric Miller & Matt Sutton
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Senior Analyst and Lead Software Developer, Matt Sutton for a discussion on the industrial internet of things, and how ANSYS Digital twins helps companies make confident predictions about future product performance, reduce the cost and risk of unplanned downtime, and improve future product development processes.

If you would like to learn more about this update and see the tools in action, check out PADT’s webinar covering ANSYS Twin Builder here: http://alturl.com/ccjjq

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Optimize Product Performance with ANSYS Digital Twins – Webinar

Engineering simulation has traditionally been used for new product design and virtual testing, eliminating the need to build multiple prototypes prior to product launch.

Now, with the emergence of the Industrial Internet of Things (IIoT), simulation is expanding into operations. The IIoT enables engineers to communicate with sensors and actuators on an operating product to capture data and monitor operating parameters. The result is a digital twin of the physical product or process that can be used to monitor real-time prescriptive analytics and test predictive maintenance to optimize asset performance.

Join PADT’s Senior Analyst & Lead Software Developer Matt Sutton for an in depth look at how digital twins created using ANSYS simulation tools optimize the operation of devices or systems, save money by reducing unplanned downtime and enable engineers to test solutions virtually before doing physical repairs.

This webinar will include an overview of technical capabilities, packaging for licensing, and updates made with the release of ANSYS 2019 R1.

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All Things ANSYS 036 – Updates for Design Engineers in ANSYS 2019 R1 – Discovery Live, AIM, & SpaceClaim

 

Published on: May 6th, 2019
With: Eric Miller, Ted Harris, & Clinton Smith
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Simulation Support Manager Ted Harris, and CFD Team Lead Engineer Clinton Smith for a round-table discussion regarding new capabilities for Design Engineers in the latest release of the ANSYS Discovery family of products (Live, AIM, & SpaceClaim). Listen as they express their thoughts on exciting new capabilities, long anticipated technical improvements, and speculate at what has yet to come for this disruptive set of tools.

If you would like to learn more about this update and see the tools in action, check out PADT’s webinar covering ANSYS Discovery AIM & Live in 2019 R1 here: shorturl.at/gyKLM

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Discovery Updates in ANSYS 2019 R1 – Webinar

The ANSYS 3D Design family of products enables CAD modeling and simulation for all design engineers. Since the demands on today’s design engineer to build optimized, lighter and smarter products are greater than ever, using the appropriate design tools is more important than ever.

Two key tools helping design engineers meet such demands are ANSYS Discovery AIM and ANSYS Discovery Live. ANSYS Discovery AIM seamlessly integrates design and simulation for all engineers, helping them to explore ideas and concepts in greater depth, while Discovery Live operates as an environment providing instantaneous simulation, tightly coupled with direct geometry modeling, to enable interactive design exploration.

Both tools help to accelerate product development and bring innovations to market faster and more affordably.

Join PADT’s Simulation Support Manager, Ted Harris for a look at what exciting new features are available for design engineers in both Discovery Live and AIM, in ANSYS 2019 R1. This webinar will include discussions on updates regarding: 

  • Suppression of loads, constraints, & contacts
  • Topology Optimization
  • Improving simulation speed
  • Transferring data from AIM to Discovery Live

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