MEASUREMENTS OF FORCE BETWEEN TYRE AND ROAD ON COMMERCIAL VEHICLES, ESPECIALLY HORIZONTAL FORCES

KRAFTMESSUNGEN ZWISCHEN REIFEN UND FAHRBAHN, INSBESONDERE VON HORIZONTALKRAEFTEN, AN NUTZFAHRZEUGEN

A ROAD IS STRESSED BY CHANGING WHEEL LOADS AND CHANGING HORIZONTAL FORCES PARALLEL AND VERTICAL TO THE PLANE OF THE WHEEL. THE VERTICAL FORCES AND THEIR FLUCTUATIONS, AND DRIVING AND BRAKING FORCES ARE WELL KNOWN. LESS IS KNOWN ABOUT THE HORIZONTAL FORCES UNDER NATURAL CONDITIONS AND ABOUT THE CHANGING RESULTANT FORCE OF ALL FORCES. BY MEANS OF A MEASURING DEVICE WHICH HAS BEEN PREPARED AND TESTED ON THE 10 MP AXLE OF A TRAILER, IT IS POSSIBLE TO CARRY OUT MEASUREMENTS ON VEHICLES WITH VARYING AXLE SUSPENSION AND SINGLE OR TWIN TYRES, EVEN DURING FULL BRAKING. FURTHER ROAD TESTING OF THE MEASURING DEVICE IS TO BE UNDERTAKEN. THIS TESTING WILL INCLUDE TRIALS ON EXPERIMENTAL SECTIONS OF ROAD HAVING DEFINED DISTRIBUTION OF UNEVENNESS. IT IS ALSO INTENDED TO CARRY OUT MEASUREMENTS ON VEHICLES WITH DIFFERENT DESIGN FEATURES ON THE ROAD, ON TEST AREAS AND ON SECTIONS OF ROAD WHERE SIMULTANEOUSLY STRESSES OR DEFORMATION OF THE ROAD MATERIALS MAY BE MEASURED.