The recent Dymola 2023x Refresh 1 release provides a number of new features and improvements. I’m going to talk about a new built-in function which you may have missed, getDependentLibraries, that I’ve been using to check our libraries’ dependencies. Modelica Library Dependencies There are many Modelica Libraries available, covering...
Tag Archive for: Modelica
Future Vehicle Magazine Feature Claytex – FPC2023
Managing Editor of Future Vehicle magazine, Steve Welch, interviewed Mike Dempsey, Managing Director, and Alessandro Picarelli, engineering Director, of Claytex prior to the Future Propulsion Conference 2023. Better products, faster The past year has seen Claytex complete some high-profile simulation projects in all areas of high performance automotive. Simulation is...
Dynamic initialisation in Dymola of full vehicle models
If you are modelling complex systems, such as full vehicle models, then you will have seen that they can include large transient periods at the start of simulation, before settling to a steady state. Colloquially this is known as the “settling phase”. Excessive settling in a model can cause...
What can you get out of a detailed simulation? Taking a look at a Fuel Cell electric bus model
Last year as part of the 2022.1 release of the VehicleDemos library, Claytex added a Hydrogen Fuel Cell Electric (FCEV) bus model. Created out of the existing EV bus example, it showcased integrating models from the Hydrogen Library with VeSyMA vehicle models. Ambitiously, a high level of detail was...
Simulating KnC Rigs
The Suspensions library is full of experiments that test the full vehicle dynamics. However, it can be very difficult to validate models using full vehicle experiments, such as the common Kinematic and Compliance (KnC) test. This kind of test, as the name suggests, details the suspension kinematics (force and...
Create a derivative function using Dymola
Sometimes it is useful to be able to determine the derivative of a function, for example when you require to use the derivative of the function directly. This post looks at how you can use Dymola to determine this for you while going through an example. Why calculate the...
Avoiding the Dysfunctional Dymola Graphics Layer
A few years ago, I wrote a blog post about writing tidy code, pointing out that it’s a good idea to be disciplined when laying out a code layer. After all, you (or someone else) will be coming back to look at this code in the future, so laying...
DTM in the 90s Part 2: Modelling Opel’s Active Aerodynamics
A couple of weeks ago, I wrote a blog post about creating a simple multibody system model of an active ballast system, found on the Mercedes-Benz DTM/ITC car from the mid-1990s. It was not the only highly innovative technical development found on the DTM/ITC machines of that era. Constant...
Useful commands and functions for scripting
Beyond the usual assortment of settings and flags, there are a number of useful commands and functions which tell Dymola to do various things. These can be triggered by entering them directly into the Commands window or executed via a script. At times, running models from a script can...
Dymola Workshop – Online – 28th September
Claytex hosted a Dymola workshop in partnership with TECHNIA. This online session took place on 28th September, and now the recording is available to view On Demand. Get an overview of systems modelling and how to set up a virtual testing process to assess and develop your products faster...
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