Optimization Design for the Converter by the Finite Element Method

In order to study the influence of the geometric figure on the service life of the converter, four different geometric figures of the converters were analyzed by using finite element method in this paper. Refractory material behavior was described by Drucker-Prager plasticity model combined with strain softening material behavior at tension, and most of the material physical parameters changing with the temperature were considered. During the working process, a mechanical and thermal coupling diagram was introduced to optimize the geometric figure of the converter by software ABAQUS. The stresses of the converter were investigated, especially in the lower brick layers of the wall (the bottom wall transition zone). The result indicates a proper inclination at the joint between the bottom and wall of the converter can reduce the stress concentration, which make the refractory material damage decrease. Therefore the service life of the converter is expected to be prolonged.