Dymola for Your Complex Simulations

Dynasim has developed Dymola with a new technology for multi-engineering modeling and simulation for use within automotive, aerospace, robotics, process and other applications. Dymola allows simulation of the dynamic behavior and complex interactions between, for example, mechanical, electrical, thermodynamic, hydraulic and control systems.

Conferences and trade shows

American Control Conference 2004

Dynasim's US distributor, MathPros Inc, exhibited Dymola at the American Control Conference. The conference took place in Boston on June 30 - July 2.

Reglermötet 2004

In May 26-27, Dynasim attended and exhibited at the control conference, Reglermötet 2004, arranged by Chalmers University of Technology. The conference took place in Göteborg, Sweden.

2004 JSAE Annual Congress

Our sales agent for Dymola in Japan, Toyota Techno Service, exhibited at the 2004 JSAE Annual Congress on May 19-21.

SAE World Congress 2004

Dynasim exhibited at the SAE World Congress 2004, 8-11 March, Detroit, Michigan. Dynasim´s CEO, Dr. Hilding Elmqvist, presented a paper with the topic "Realtime Simulation of Detailed Vehicle and Powertrain Dynamics".

ASIM Workshop 2004

Dynasim's German distributor, Bausch-Gall GmbH, exhibited at the ASIM Workshop, 9-10 March in Ingolstadt, Germany.

Training and courses

Free seminar on Dymola in Italy

Salesteam, the reseller for Dymola in Italy, arranged a free seminar on June 4, 2004. The seminar is held by Dr. Ing. Martin Otter, the chairman of the Modelica Association.

Courses on Dymola in Germany

On April 29-30, 2004, a German speaking course on Dymola was arranged by Dynasim's German distributor, Bausch-Gall GmbH. For more information see www.bausch-gall.de/semidy.htm

News

Dymola 5.2a released!

Dymola 5.2a has been released. New versions of the Hydraulics and the Multibody libraries are available. For more info see the release notes.

Pneumatics library PneuLib released!

The pneumatics library provides basic model classes for the modeling of cylinders and motors, valves and restrictions, lumped volumes, lines and sensors. In total there are more than 80 models. PneuLib homepage

PowerTrain 1.0 released!

The PowerTrain library has been totally redesigned and enhanced considerably. This licensed Modelica package provides 1-dimensional rotational mechanical components for vehicle power trains. It is also useful in general for modeling of gears. A typical screenshot of the new version is shown in the figure

. The new features include:

45 user-callable components (not counting interface objects), 10 example models.
Efficient and robust handling of speed and torque dependent friction based on new research results. Therefore, gear efficiency is now easy to simulate. Many elements in the library, especially most clutches, gears, planetary gears, automatic gearboxes, engines, have now optional speed and torque dependent losses.
Bus concept to get rid of the complex connection structures of signal connections and support the user to easily extend the bus with user-defined signals.
Variant selection using the replaceable feature of Modelica. Basically, there is now just one model - PowerTrain.DriveLine - (see figure) consisting of a typical drive line from which all the main variants provided in the library can be selected, e.g., 3 different types of detailed automatic gearbox models but also user-defined gearboxes.

Animation of gears and shafts of a drive line as built-in feature of many components, see, e.g., the animation of a 6-speed automatic gearbox of Lepelletier type in the figure on the right. Animation can be switched off with a parameter to remove the animation code completely from a model, e.g., for hardware-in-the-loop simulation.
Control units to control the various parts of a drive line. All of them are parameterized with the control lever position of the driver (P,R,N,D,1,2,3,...) and do not depend on a specific number of gears.
Sophisticated examples which may be used as a starting point for user drive line models. Especially, examples are provided for power consumption calculation and analysis of shift strategies based on detailed models of 4 and 6 speed automatic gear boxes.
Improved documentation with a 54 pages tutorial, both in pdf-format and in html-format for online-help, and a 127 pages reference guide in pdf-format.