from the conferences organized by TANGER Ltd. provisional website
The article describes the state of the art computer simulation in the field of metal forming processes the main problem points of traditional methods were identified. The method, that allows predict the deformation distribution in the volume of deformable metal with taking into account of microstructure behavioral characteristics in deformation load conditions, was described. The article compares the results of modelling the TRIP effect and overlooking it. The comparison shows that martensite, which forms in the microstructure, causes a significant rise of equivalent stresses across the entire representative volume, which is extremely critical in the drawing process engineering. The method applied also gave a better understanding of how the microstructural elements interact in TRIP steel under strain, which helped explain more intense (2 or 3 times as high compared with the average values) radial strains in the plastic phases close to bigger grain clusters of stronger bainite and martensite phases. To save computing time, statistical representation of the microstructure was applied. Statistically Similar Representative Volume Element (SSRVE), representing meta-stable steel microstructure, was developed. Applying the SSRVE concept dramatically decreased the calculation time of the model while maintaining the overall accuracy. The study helped obtain initial data that can be used to design the drawing processes for TRIP steels. This will enable advanced and technically flexible materials to be used in the conventional drawing process, thus expanding the range of applicable steels.Keywords: multiscale modeling, drawing, Statistical Representative Volume Element, microstructure, stress-strain state.
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