Dymola – Vehicle Dynamics Library

Overview: Vehicle Dynamics Library features an open, user extensible, object-oriented architecture with access to the model source-code in Modelica. • Modeling, simulation, and analysis of cars and heavy vehicles Use the library to optimize and verify design of your vehicle systems Key features: from the early design phases through control design and implementation. • Full environment and infrastructure for full vehicle and Unrivalled real-time performance makes Vehicle Dynamics Library (VDL) subsystem analysis, including roads, drivers, and test rigs and Dymola® the premier choice for HIL/SIL simulations. The true multi- domain environment in combination with the seamless integration with other • Based on the Modelica® standard language for intuitive platforms such as Simulink™ makes Dymola and VDL natural elements of component based modeling and powerful multi-engineering any model-based development process. capabilities > Modeling • Openness and flexibility streamlining routine work and concept design VDL is defined in the modeling language Modelica. This means complete insight into library implementation with the possibility to study models in • Easy-to-use and efficient Simulink interface for real-time detail for in-depth understanding. Components can be modified by the user simulation performance on standard PC hardware and new components can be defined at all levels with the full power of the Benefits: multi-engineering Modelica libraries always at hand. With VDL, the user is given a toolbox for full vehicle modeling. With a • Easy construction and efficient simulation of detailed and hierarchical structure, templates and predefined components, configuration realistic models of cars, light trucks, and heavy vehicles. of different vehicles is convenient and straight-forward. Component-based drag-and-drop modeling allow for flexible design of new topologies and combination with other Modelica-libraries, facilitating e.g. hybrid electric vehicle and active system development.

ISO double lane- change with closed loop driver at 100km/h All chassis variants are intuitively built It is possible to simulate one or multiple vehicles and also parts or with library components for rigid or flexible subsystems of vehicles under a variety of different conditions. Models are bodies and frames, axles and suspension easily integrated into Simulink™ block diagrams. All model variables are linkages of various detail levels, steering available for evaluation in plotting and post-processing. mechanisms, anti-roll mechanisms, etc. Animations may conveniently be shared to demonstrate simulation results. Complete kinematic and elasto-kinematic Dymola has outstanding and proven capabilities of simulation in real-time suspension components such as for automotive applications. McPherson, DoubleWishbone, MultiLink One customer benchmark and BeamAxle are included, as well as demonstrated remarkable real- low-level components for modeling custom time performance of a detailed suspensions. model of a mid-sized sedan The library offers full flexibility and Visualization of linkage forces for chassis with front MacPherson support for heavy-duty trucks and truck steering system design support. and rear MultiLink suspensions combinations. Twin tires, flexible frames, with stiff bushings, giving a total axle configurations, a variety of couplings, full trailers, semitrailers, tractors, of 72 degrees of freedom. and tankers are available to allow for convenient definition of new vehicle Test rigs are used to isolate configurations. behavior that requires Active components and sensors are easily introduced at any location. It is Vehicle model mounted in a virtual constraints on the tested model. straightforward to include both conventional and hybrid electric propulsion test rig for constrained testing. For full vehicles or chassis this as well as different types of brake and suspension systems. Integrated can be done to investigate for models allow for complete vehicle simulation and system-level evaluation example the roll, pitch and bounce dynamics. of any novel vehicle control concept. For parts and subsystems such as suspensions, the test rigs can for To protect in-house knowledge but still make it possible to share models, it example be used for kinematics and compliance analysis. is possible to encrypt models. This allows suppliers and OEMs to work with > Main libraries the same models without revealing proprietary information. VDL can be ordered with any of these options: > Experiments • Cars: Vehicle models for cars with basic suspensions For the evaluation there is a wide range • Trucks: Chassis models for Heavy vehicles and trucks with basic of simulation setup possibilities. suspensions Add-on options to the main libraries There is a flexible segment-based road • Suspensions: Detailed suspension models for cars or trucks definition with friction and unevenness. • Drivelines: Detailed driveline models and templates for cars taking into To control the input to the vehicle, there account 3D effects are easily customizable manoeuvres Vehicle on a segment-based road • Active safety: Models for driver-vehicle-safety systems and tracks with open- and closed-loop with a closed-loop driver • Parsfile import: Import of parsfile car data driver models, and drivers that can follow testing the ability to avoid an sequences of instructions. Both handling obstacle hidden by a crest. The Vehicle Dynamics Library is developed, supported, and maintained by tests and drive cycle experiments for fuel Modelon AB, a Dassault Systèmes technology partner. economy and energy management are available.

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About Dassault Systèmes As a world leader in 3D and Product Lifecycle Management (PLM) solutions, Dassault Systèmes brings value to more than 115,000 customers in 80 countries. A pioneer in the 3D software market since 1981, Dassault Systèmes applications provide a 3D vision of the entire lifecycle of products from conception to maintenance to recycling. The Dassault Systèmes portfolio consists of CATIA for designing the virtual product - SolidWorks for 3D mechanical design - DELMIA for virtual production - SIMULIA for virtual testing - ENOVIA for global collaborative lifecycle management, and 3DVIA for online 3D lifelike experiences. For more information, visit http://www.3ds.com.

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