Experimental‐based study of gear vibration characteristics incorporating the fractal topography of tooth surface

Microscopic roughness is inevitable on the gear meshing surface, which also a key parameter affecting dynamic response. The surface exhibits self-affine characteristics across multiscales. To explore influence of fractal topography vibration amplitude system under different rotational speeds and loads, an experimental setup spur transmission devised. dimension are calculated by power spectral density method. relationships between response parameters revealed experimentally. Results indicate that rougher tooth is, smaller or larger roughness, corresponds to intense amplitude. sensitivity varies at loads. Under low speed light load conditions, have more obvious system. With increase load, macroworking conditions gradually become main factor attributed