Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Parallel-kinematic LBF® road-street simulator reproduces load standards realistically and shortens test time

09.05.2008
The Fraunhofer LBF, headed by Prof. Dr.-Ing. Holger Hanselka, presents the fully kinematic road-street simulator, its enhanced and worldwide-patented biaxial wheel test technology at the Automotive Testing Expo in Stuttgart.

The newly developed test rig concept realistically reproduces the wheel loads in all degrees of freedom of the vehicle and allows a comprehensive reduction of the test time - compared to real tests on test tracks. In addition the updated simulation software LBF®.DAP, which allows a decrease down to one third of the original test time of complex trials, while retaining the characteristic load profiles.

For engineers in R&D, experimental and virtual test technologies for the design and manufacturing of new vehicles and components are standard tools to improve safety, quality, durability and environmental friendliness of automobiles in a sustainable manner. Therefore, the goal is a sound balance of low weight, reliability and an optimum of cost and resources as well as a reduction of test time to speed up development processes.

"The concept of a fully kinematic wheel test facility represents an entirely new generation of wheel test rig, which follows the tradition of patented ZWARP test, and allows at the same time an improved quality of the laboratory simulation of wheels and hubs for cars." says Rüdiger Heim, head of the competence center Wheel / Hub / Axle at Fraunhofer LBF. The specific characteristics of the wheel-road simulator lie in the field of parallel kinematics, a novel application for wheel test rigs, as well as an internal drum connected directly to the electric motor by a flange. The hexapod platform for the attachment of the wheel and hub allows controlled translational and rotational movement of the wheel in all relevant degrees of freedom and offers an unprecedented flexibility in the use of standardized load programs - such as those offered by Fraunhofer LBF, the work group wheel (Arbeitskreis Räder - AKR) and SAE International.

Furthermore, researchers from the Fraunhofer Institute for Structural Durability and System Reliability LBF show enhanced developments of standard test technologies as well as customized testing methods for:

- the characterization and testing of elastomer components,
- load-stress measurements and analysis during operation,
- testing of trailer coupling systems.
The new testing technologies offer a more realistic and more efficient testing of standard components as well as procedures and methods especially developed and adapted for new materials and components . Virtual simulation plays a decisive role in the reduction of development time and production costs as well as in the improvement of the product life cycle, the utility value, the weight optimization and increase of operational safety. Oliver Ehl, managing director of S & S GmbH, a spin-off company of the Fraunhofer LBF, which creates individual software solutions for the structural and system analysis, developed a computerized method in order to capture the multiple, complex effects and interactions of the parameters which determine the life cycle of wheels (loads, tires, geometry and material).

"Embedded in our software LBF®.WheelStrength, the structural durability assessment of the wheel can be carried out as early on as the predevelopment stage. At the same time the virtual model allows the optimization of the design before even producing the first prototype. This shortens development time and shows specifically where improvements can be made," says Ehl.

Fraunhofer researchers will be informing about further areas of application of new testing technologies in the automotive industry in short lectures in hall 1, booth 1956. The main exhibit is a racing car, on loan from the racing team of the Technical University of Darmstadt, which illustrates the experimental and virtual testing in the automotive industry.

Anke Zeidler-Finsel | Fraunhofer Gesellschaft
Further information:
http://www.lbf.fhg.de/

More articles from Automotive Engineering:

nachricht Two intelligent vehicles are better than one
04.10.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht The Future of Mobility: tomorrow’s ways of getting from A to B
07.09.2017 | Fraunhofer-Institut für Angewandte Informationstechnik FIT

All articles from Automotive Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Rapid environmental change makes species more vulnerable to extinction

19.10.2017 | Life Sciences

Integrated lab-on-a-chip uses smartphone to quickly detect multiple pathogens

19.10.2017 | Interdisciplinary Research

Fossil coral reefs show sea level rose in bursts during last warming

19.10.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>