In any dynamic fluid system, modelling the medium is a crucial step for achieving accurate and realistic simulations. For hydraulic system modelling, the fluid’s bulk modulus which represents the resistance of the fluid to compression, significantly affects the system’s behaviour and stiffness. Since fluid in a hydraulic system is...
Model Based Systems Engineering (MBSE) has become a hot topic in recent years in the general field of engineering. It is used to define a wide palate of different tools, methodologies and approaches to engineering, and is not limited to the realm of simulation. Therefore, in my experience, the...
To train autonomous driving systems for critical collision scenarios, the DeepSafe project aims to address the “reality gap” in these simulated scenarios. A crucial component of these scenarios is the realistic behavior of pedestrians interacting with their environment. AVSandbox uses states-of-the-art computational biomechanical modelling to generate realistic human motion...
New versions of Dymola are released by Dassault Systèmes twice a year, usually around the middle of April and the end of November. As a Modelica library developer and a Dassault Systèmes partner, here at Claytex we update to the latest version of Dymola every release. This means we’ve...
In the ever-evolving landscape of autonomous driving, ensuring the safety and efficacy of self-driving systems is paramount. This is where simulation tools like AVSandbox come into play, offering a revolutionary solution for testing and training autonomous vehicles in a virtual environment. Central to AVSandbox is its ability to model...
Incidents involving autonomous vehicles (AV) and emergency vehicles raise lots of questions on how an AV should behave when they have to deal with those type of traffic vehicles at different situations such as high-speed motorways or low-speed intersections (both with and without traffic lights). Should an AV always...
This post looks at how the FlexLM license server works with Dymola and how to troubleshoot it. Most of the information was obtained from the Dymola User Manual 1A and from questions asked on the Claytex support and the Dassault Systemes support system. Note that there is also the...
Over the years, there have been numerous instances where we have had the need for an easily configurable generalized simulation interface, for use in front of one of our compiled Dymola/Modelica models. This front end, often referred to as a graphical user interface (or GUI for short), would serve...
Dymola comes with a useful package called Favorites. This package provides an easy way for a user to transfer models. This post looks at how to use this feature. Where is the Favorites package? The Favorites package is at the top of the Package Browser as in Figure 1....
On a recent project I came across a Modelica function or two I found very useful. By the same token, I thought they would make an interesting blog post! Many cases exist where you might wish to automatically generate Modelica files. One example would be to generate variants of...
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