Influence of Thermal Shrinkage and Permanent Deformation of Fiber Cords on Grounding Performance of Passenger Car Radial Tire
The influence of thermal shrinkage and permanent deformation of fiber cords(930dtex/2 modified nylon 66 cord and 1670dtex/2 polyester cord)on the grounding performance of passenger car radial tires was studied.The results showed that the plastic strain generated by the fiber cords increased with the increase of post cure inflation(referred to as PCI)tension.When the PCI tension was large enough,the plastic strain curve of the fiber cords tended to be consistent.Compared with untreated cords,the modulus of heat-treated cords increased with the increase of the PCI tension.Compared with the process without PCI,under the same inflation pressure and radial load,the long axis of the footprint of the tires after the PCI process became shorter,the short axis of the footprint became longer,the footprint was more square,and the inflated cross-sectional width and inflated cross-sectional width under load of PCI tires increased.
passenger car radial tirefiber cordPCIplastic strainfootprintfinite element simulation
万方数据
维普
