What’s New with Contact Technology in ANSYS 15.0?

contact technology ansys 15Contact technology is used extensively throughout ANSYS Mechanical and Mechanical APDL to enforce compatible behavior between different portions within a model. With each Release, ANSYS continues to improve the breadth and robustness of our contact technology.  In ANSYS 15.0, we have enhanced contact still further to help users build models more efficiently without compromising on robustness.

Trim Contact, first introduced in ANSYS 14.5, is a great tool for reducing the number of unnecessary contact and target elements in large assemblies. In ANSYS 15.0, we have changed the default to activate trim contact even for application involving large deflection.

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Workbench CAD Readers for ANSYS ICEM CFD Meshing

ANSYS ICEM CFD has been using the Workbench CAD readers for a few years now, and for those of you using ICEM CFD in Workbench, it is drag and drop simple. But many of our stand alone ANSYS ICEM CFD users are not really aware of this functionality, so here is a blog about it.

ANSYS ICEM CFD import

In previous versions, we had the Workbench readers under “File => Workbench Readers”. The Workbench readers really supersede the old ANSYS ICEM CFD readers. They are up-to-date, easy to use, and offer connections such as JT Open and SpaceClaim that ICEM CFD never supported on its own. Talking to users, we found that many thought the Workbench readers option would only work inside Workbench or if they installed Workbench. To make the option more obvious, we moved the Workbench readers to the top of the list and renamed it “Import Model.”

Why “Import Model” instead of “Import Geometry”? Because the Workbench readers also support mesh formats! You can even select a *.wbpj and get both the geometry and mesh. During the import process, you can filter to make it easier to find the files that you are looking for. For instance, you can switch it to SpaceClaim to filter for SpaceClaim documents. Select your particular file (some formats will show you a preview of it), and click Open. Continue reading

ACT Templates for ANSYS DesignXplorer

Application Customization Templates - ACT

Are you familiar with ANSYS ACT (Application Customization Templates)? ACT allows all sorts of great customization. You could use ACT to encapsulate APDL scripts, add new loads and boundary conditions, create custom results, or even integrate third party tools. For instance, Vanderplaats R&D  just integrated their topology optimization product into ANSYS Mechancial via ACT.

The ACT Toolkit requires a license to develop extensions, but not to use extensions created by others or provided in our ACT library. Continue reading

ANSYS EKM – Defining Templates for Job Submission

In two previous blogs, Batch Computations and Remote Visualization, we have been introducing ANSYS EKM 15.0 and its new capabilities of creating and managing batch jobs, as well as remote visualization sessions. These web-based capabilities are easing the process of accessing compute resources in various ways. In one specific advantage, through system configuration, the users are provided pre-defined options and parameters, such that the resulting command line is always syntactically correct and aligned with the given IT policies. Continue reading

New DPM (Discrete Phase Model) Features in ANSYS Fluent 15.0

temperature distribution ansys fluent 15With the release of ANSYS Fluent 15.0 there were many enhancements and new features that I think make the software even more productive. Fluent users who routinely use the Lagrangian tracking model (also known as DPM) will find some features that make the simulation more robust and quick to converge along with many post-processing options. I have compiled a list of some of these options for you to try. Continue reading

Efficient Modeling of Fan Inlet Distortion

At ANSYS, we are continually improving our turbomachinery simulation capabilities. Some recent improvements are proving useful to engine manufacturers, enabling them to better understand the on-wing performance of their new fuel-efficient engines.

Fans in modern aircraft engines are very important in that they provide most of the thrust required by the aircraft. Their environment is very challenging though as they are frequently subjected to non-uniform inflow conditions. These conditions could be either due to flight operating requirements such as take-off and landing, the engine nacelle installation configuration, wake interference from aircraft fuselage or cross-flow wind conditions. Similarly, industrial land-based gas turbines in power plants can be subjected to inlet flow distortion due to upstream ducting or installation maintenance deterioration. Continue reading

More on Base Excitation Using the Enforced Motion Method, TRANSIENT Analysis

In an earlier bog, I have developed an ACT extension for harmonic base excitation using the enforced motion method EMM. That blog demonstrated three different techniques of applying base excitation in harmonic analysis, and the EMM using the developed ACT extension proved to be the most efficient, easy to use, yet the most accurate technique.

Today, I am updating the extension to also account for transient analysis. The extension now supports the application of displacement and acceleration base excitation in time-history (i.e., transient) analysis. The EMM is supported only in mode-superposition analysis which would then allow for a faster and less expensive analysis than either the reduced or the full method for many problems.

The time dependent excitation (displacement or acceleration) can either be directly input in a tabular form, or read from a file. Continue reading

The Five-Box Trick in an ANSYS nCode DesignLife Fatigue Simulation

In my last blog, I discussed the difference between HBM nCode DesignLife and ANSYS nCode DesignLife. I explained how ANSYS nCode DesignLife is fully featured, but integrated into the Workbench environment to provide state-of-the-art CAE fatigue analysis capabilities along with the ease of use features of Workbench. In this blog I will discuss the basic workflow of an ANSYS nCode DesignLife simulation.

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Early in your exposure to ANSYS nCode DesignLife, you will probably hear the term “the 5-box trick” and wonder, what does it mean? Essentially, the term 5-box trick is used to succinctly describe the basic steps of an ANSYS nCode DesignLife workflow. The multiple actions required in most ANSYS nCode DesignLife simulations can be summarized into five general categories (i.e., 5-boxes). Continue reading