Matthias Wangenheim

Since 2013 Matthias Wangenheim has been head of the contact mechanics and friction research group at Leibniz University Hannover, with an emphasis on grip and wear of tires and tire tread blocks on all kinds of realistic surfaces in experiment and simulation. Wangenheim previously had two industrial positions at Freudenberg Sealing Technologies as head of the advanced development department and as systems engineer at Airbus Defence & Space. He studied mechanical engineering at the University of Hannover followed by a PhD.

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Presentation

Cornering stiffness in quasi-steady and dynamic inner drum testing

Measurements of tire lateral force versus slip angle are often performed in a quasi-steady manner, i.e. the slip angle is held constant or varied comparably slowly. The presentation covers the utilization of a new inner drum test rig to contrast these types of measurements with dynamic tests, in which the slip angle is altered with varying frequencies and varying ampitudes around several operating points. Two types of surfaces (rough and smooth) are utilizied. This enables the identification of specific time lags between slip angle, side forces and contact temperatures for each operating condition.