Shape the character of a vehicle while balancing ride & handling comfort and road noise
Comfort. Drivability. Stability. Balance. Agility. Precision. Predictability. Greater control possibilities. Thanks to its driving dynamics development capabilities, LMS is able to shape the character of a vehicle and deliver a meticulously balanced combination of handling and ride comfort, while taking road noise into account.
Integrated approach chassis and suspension engineering
To tackle the challenge of delivering the desired vehicle performance, LMS offers an integrated approach to chassis and suspension engineering – one where driving dynamics, durability and NVH are handled in parallel from concept to vehicle refinement. The LMS offer is dedicated to frontload design decisions for chassis-system components and chassis layout.
LMS presents a scalable driving dynamics platform to model and simulate chassis components, actuators and the vehicle itself from functional to multi-body approaches. The solution offers straightforward integration with MiL, SiL and HiL validation processes. The vehicle dynamics simulation platform is supported by an integrated & robust system simulation environment to support mechatronic challenges:
- LMS Virtual.Lab Motion multibody solutions enables engineers to effectively analyze and optimize real-life performance of mechanical and mechatronic systems long before physical testing.
- LMS Imagine.Lab Vehicle System Dynamics offers dedicated capabilities to design and optimize individual chassis system components (brakes, tires, suspension, steering, anti-roll and shock-absorber systems) and integrate them in a single system model to simulate and validate global chassis control strategies.
LMS’ driving dynamics capability includes pre-program benchmarking, target setting, concept development, detailed chassis development and prototype refinement of suspensions and steering system characteristics as well as controls integration.
- Benchmarking and target setting: LMS helps customers to set adequate ride and handling targets for optimal performance as well as cascading full-vehicle targets of individual body, chassis and suspension subsystems and components for ride comfort, handling and steering handling.
- Concept development: Amongst other LMS develops guidelines for setting up suspension architecture, optimized hard point locations and bushing stiffness. It performs elasto-kinematic analysis taking into account part elasticity (such as subframes and/or flexible shock-absorber in a McPherson suspension), even considering the geometrical design constraints. LMS also frontloads the analysis of full vehicle handling, steering handling and drivability and ride-comfort behavior, and early evaluates harshness and other secondary ride comfort performances. LMS has also a methodology to take into account the subjective driver feeling, and is able to frontload ride and handling feeling perception, through simulation.
- Detailed chassis development: LMS is specialized in optimizing suspension designs for improved ride and handling performance, including the assessment of comfort maneuvers, obstacle crossing and the response to rough road profiles and handling maneuverings. Also steering shimmy and brake judder analysis and optimization, analysis of drivability performances such as tip-in/tip-out, engine start/stop, gear shifting and minimizing torsional vibrations of the driveline are topics that LMS is used to tackle. In addition LMS has developed a methodology which takes into account the effect of body flexibility with respect to ride and handling full vehicle performance. On top of this LMS develops active control systems through co-simulation with controllers and power systems, until final validation and tuning and integrates and evaluates active chassis systems and subsystems technologies.
- Prototype refinement and validation: LMS offers its customer a refinement of suspension and steering system characteristics, but also final tuning of the control system. All activities can be performed in customer or partnering-to-LMS Proving Grounds.
References
- "Thanks to the know-how and pragmatic attitude of LMS, the technology transfer will enable Jaguar engineers to leverage this leading-edge work in future development projects. We will continue to use LMS solutions to maintain our brand image for the next-generation luxury vehicles that drivers have come to expect from Jaguar." - Mr. Faruk Turgay, Manager Vehicle NVH at Jaguar Land Rover
- "Throughout the process of developing the suspension, LMS Virtual.Lab Motion was indispensable in pinpointing the root cause of vibration problems in the old suspension and in quickly guiding us toward the best design for the new independent suspension." - Mr. Shaun McFadden, Engineering Designer and Analyst at Timoney
- “Combining our years of broad race vehicle experience with the unmatched capabilities of LMS Virtual.Lab Motion results in an integrated simulation solution that leverages the skill and passion of our racing teams in putting winning vehicles on the track.”- Mr. Skip Essma, race vehicle engineer at Toyota Racing Development
- “This body flexibility project gives us the best possible structure for our next-generation Audi.” - Mr. Antoine Guellec, project leader and an acoustic expert at Audi
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