Simulation of rolling processes by the boundary element method

摘要

Rolling processes play a very important role in everyday manufacturing. It is demonstrated here that the boundary element method (BEM) can be used to analyze, effectively and accurately, this class of problems involving both material and geometric nonlinearities, as well as contact boundary conditions. The BEM formulation is capable of using any of a class of combined creep-plasticity constitutive models with state variables for the description of material behavior. The specific problem considered is plane strain slab rolling using the constitutive model originally proposed by Hart. The numerical results obtained from the BEM analysis provide a number of insights into the process and can become useful in designing these rolling operations.