Application of ABAQUS Code to the Simulation of Simple Extrusion Problems.

摘要

The capability to simulate, by computational codes, metal forming processes is very important for energy savings; indeed, up to now, the best forming processes have been established through experimental tests and many years of experience acquired in the industry. In some particular cases, for example extrusion, the calibration of forces present in the process and of the apparatus to be used to obtain a product (for example an extruded piece) of satisfactory quality, requires many tests and, consequently, substantial energy and material waste. For this reason, predicting by suitable calculations the force which must be applied to execute a forming process, the best form of a die, the forming phenomenon evolution with the corresponding distributions of stresses and plastic strains in metal worked, would allow the reduction of prime costs and times necessary to prepare the experimental apparatus. In this paper, a sensitivity study is presented concerning the structural analysis general purpose code ABAQUS and the conditions necessary to obtain the best simulation of some extrusion processes.