3-D Nonlinear Finite Element Analysis Of Bias Tire Under Static Contact

In this thesis, AUTOLISP is used to establish the interface between AUTOCAD and ANSYS for data transmission. By applying solid element, layer element and contact element of ANSYS, 3-D nonlinear finite element models of bias truck tire (9.00-20 16PR as an example) under static contact, are developed for the first time. In these models, the influences of tire's bar, non-linearity of geometry, bead-rim contact and tire-ground contact are all included.Firstly, deformation, distributions of stresses and strains, the status of bead-rim contact are systematically analyzed for the bias tire under aeration case, and influences of considering bead-rim contact or not on deformation, strains and stresses are discussed. Secondly, tire's footprint on the ground, distribution of contact pressure, and influences of parameters, such as inflated pressure and deflection on tire-ground for static contact case, are analyzed. Moreover, influences of cord angle and load on deformation, distributions of strains and stresses with different load case, are discussed, and corresponding curves are given.The analytical results of deformation, stresses and strains of bias tire for aeration case in this study are consistent with the information from related references and tire standards. Some results for the tire-ground staticcontact case, such as tire's footprint on the ground and distribution of contact pressure are also in accord with the results of tests from references. It shows that the finite element models developed in this study are reasonable. Moreover, some conclusions drawn from this study are difficult to be obtained from tests. Thus, these conclusions in this thesis could be used as a guide for structural design and optimization of bias tire.