Application of the Finite Element Method to the Analysis of Automobile Tires
نویسندگان
چکیده
The ingredients required for computationally e cient large-scale 3D FE contact analyses of automobile tires are presented. A hybrid nite element is employed for describing the nearly incompressible behaviour of rubber. The reinforcing cords are represented numerically by means of rebar elements. Strategies for reducing the amount of CPU time and disk space are reported including an iterative solver with preconditioning. Problems with the available commercial contact algorithm in the context of this 3D simulations and 2D analyses of tread blocks moving on snow suggested the implementation of a contact algorithm, at the moment for 2D problems, into the existing FE program. The derivation of the relations for the contact sti ness matrix and the force vector is described. Frictional e ects are considered by means of a regularized Coulomb friction law. Details of the employed contact-search algorithm are given. 1
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