The temperature distributions of dump truck tire have been simulated and the important effects of ambient temperature on truck tire stress and deformation have been discussed. A 2D virtual prototype of air-filled 775E 24.00R35-bridgestone radial tire has been developed by employing FEM. The model takes into account the major components of a radial tire including the tread, steel belts, carcass and air filled volume. The tread is created as the solid elements with hyper-elastic rubber property. The behavior of rubber for the tread is described by the Mooney-Rivlin material formulation. The belt and carcass are built with the shell elements and isotropic elastic material. Algor, a nonlinear finite element analysis code, is used as modeling and simulation tool. Truck tires are operated under very severe conditions, with the ambient temperatures ranging from -40 to 40 °C at the Syncrude mine in Canada. The stress, nodal displacement and deformation distribution of tire versus simulation time of 1 s are well predicted for the tire operated in winter, spring/fall, and summer. The results show that the maximum von Mises stress concentrates on the belt layer and increases with the increase of the ambient temperature. High nodal displacement fields are accumulated in two sides close to the bottom of the tire. The maximum nodal displacement increases from winter through spring/fall to summer. The difference of the maximum tire stress values between summer and winter is 6.4% and the difference of the maximum nodal displacement values is 37%. Therefore, the effect of temperature on the tire nodal displacement is greater than on the tire stress. The result of surface deformation simulation indicates the highest compaction layer occurs at the tread around contact zone at the bottom of tire in summer. The tire temperature distributions are well visualized under a variety of ambient temperature. The result shows that the increase of the ambient temperature will cause the tire temperature rise, which seems more quickly at the belt and carcass layers. When the ambient temperature is set to an extremely high value of 40 °C, the maximum tire temperature of 88.5 °C is obtained which is less than the maximum tire level-off temperature of 93 °C suggested by the Ton-MPH formula. This study provides a solid foundation to further model a detailed 3D FE tire for evaluating the stress, deformation and temperature distributions of whole dump truck tire.
Effect of ambient temperature on stress, deformation and temperature of dump truck tire
Engineering Failure Analysis ; 23 ; 55-62
2012
8 Seiten, 8 Bilder, 1 Tabelle, 14 Quellen
Aufsatz (Zeitschrift)
Englisch