PDF
Full
Outline
The accurate acquisition of tire body deformation has a crucial influence on the simulation accuracy of theoretical model, so the deformation rules and expression accuracy of different cord are studied by beam body model and finite element model. Firstly, a detailed theoretical model considering the flexible deformation characteristics of the beam carcass is established, and the expressions of tire cornering stiffness and driving/braking stiffness are obtained. Secondly, the tire finite element model is established, and the tire rubber and cord material parameters are accurately obtained to complete the comparison between the simulation results and the test data. On this basis, the finite element model of smooth tire with isotropic tread stiffness distribution is established, and the lateral stiffness, torsional stiffness and steadystate glide stiffness are simulated to obtain the lateral deformation of the tire under the action of lateral force and aligning moment, and the superposition principle of lateral deformation of different cord lines is verified. Then, the lateral deformation of different cord lines is fitted according to the established beam matrix model. Finally, the tread stiffness obtained by different cord lines is compared and verified by combining the flexural stiffness and slip stiffness models. The results show that the principle of deformation superposition is satisfied for different tire cord. The beam matrix model has a better expression precision for the lateral deformation of cord. The bending stiffness of cord shows a nonlinear decreasing trend with the increase of load, and the difference is small under large load. The calculation accuracy of tread stiffness obtained by different cord positions is different. The calculation accuracy of crown cord is the lowest at 93.6%, and the calculation accuracy of body 2 cord is the highest at 97.3%. The research position of the beam body model in the theoretical model is clarified in the study, improving the simulation accuracy of the theoretical model, and providing the reference for the study of tire dynamics.
PDF
392
164
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
