Tire longitudinal slip characteristic test method under dynamic load loading

The invention relates to a method for testing the longitudinal slip characteristic of a tire under dynamic load loading. The method comprises the following steps: mounting a tire rim assembly, performing pilot run on the tire to eliminate stress, and cooling the tire; a torque control slip rate is used for carrying out reciprocating testing, and longitudinal relaxation length testing results under different loads are obtained; the load range is set according to the equipment capacity in the longitudinal sliding characteristic test under the loading of the dynamic load, and different frequency tests are carried out by using discrete points; drawing and analyzing a dynamic load longitudinal sliding test curve; and performing drawing analysis on the dynamic load longitudinal sliding test curve and comparing test effects. According to the tire longitudinal slip characteristic test method, the test of the longitudinal relaxation length is carried out based on a slip rate (torque control for driving braking) mode,