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,
"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
Two intelligent vehicles are better than one
04.10.2017 | Ecole Polytechnique Fédérale de Lausanne
The Future of Mobility: tomorrow’s ways of getting from A to B
07.09.2017 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
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...
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....
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...
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...
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...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
19.10.2017 | Life Sciences
19.10.2017 | Interdisciplinary Research
19.10.2017 | Earth Sciences