Abstract:

Considering the radial heavy duty tire 295/80R22.5 as the research objective, a finite element analysis model is established. The volume change behavior of pattern grooves in the contact zone is realized by simulating the tire rolling process with software ABAQUS, which is used as the boundary condition of tire pumping noise analysis. On this basis, the flow field characteristics in the pattern grooves is analyzed by using computational fluid dynamics (CFD) method, and the FW-H equation is applied to calculating the pumping noise, with the sound source location of tire pumping noise confirmed by using LMS acoustic software. Results show that the tire pumping noise is mainly caused by surface fluctuation pressure, and the dipole sound source is the domination in low Mach numbers. On this basis, low noise pattern structure is put forwarded，which significantly reduces noise reaching a low of 1.73 dB. The result shows that the relationship is obvious between pattern surface fluctuation pressure and tire pumping noise.

Key words: finite element; radial tire；pumping noise；dipole source；simulation