MULTI-SCALE CRYSTALLINE PLASTICITY FINITE ELEMENT ANALYSIS OF TEXTURE EVOLUTION IN DRAWING PROCESS
Journal Title: ROMANIAN JOURNAL OF TECHNICAL SCIENCES - APPLIED MECHANICS - Year 2018, Vol 63, Issue 2
Abstract
The crystallographic control technology in the aluminum wire drawing process is a key technology in the aluminum industries, which produces high-strength bars and wires for the electric, automotive and aircraft parts. A newly proposed “process metallurgy” computational technology in the industrial forming process consists of the two-scale finite element (FE) analyses and the texture evolution prediction scheme. We developed two-scale FE analyses code based on the crystallographic homogenization method by considering the hierarchical structure of polycrystal aluminum material. It can be characterized as the combination of two-scale structure, such as the microscopic polycrystal structure and the macroscopic elastic plastic continuum. Micro polycrystal structure is modelled as a three dimensional representative volume element (RVE). RVE is featured as 3×3×3 (totally 27) eight-nodes solid finite elements, which has totally 216 crystal orientations. This FE analyses code can predict the deformation, strain and stress evolutions in the wire drawing processes in the macro-scale, and simultaneously the crystal texture and hardening evolutions in the micro-scale. In this study, we analyzed the texture evolution in the “three passes” wire drawing processes under conditions of specified drawing angles of die. We evaluated the texture evolution in the surface and center regions of the wire cross section, and to clarify the effects of processing conditions on the texture evolution.
Authors and Affiliations
EIJI NAKAMACHI, TAKASHI YOSHIDA, HIROYUKI KURAMAE, TOSHIHIKO YAMAGUCHI, YUSUKE MORITA
Keywords
Related Articles
- EP ID EP513169
- DOI -
- Views 79
- Downloads 0
STOCHASTIC LINEARIZATION OF SYSTEMS WITH HYSTERETIC CHARACTERISTICS
In this paper is presented a linearization method for a stochastic differential system with hysteretic characteristics and random excitation. The Gaussian equivalent linearization technique is applied to a system with hy...
INFLUENCE OF SPEED OF TESTING AND TEMPERATURE ON THE BEHAVIOUR OF POLYURETHANE FOAMS
Polyurethane foams with densities of 35, 93, and 200 kg/m3 were tested in tension and compression at three levels of temperatures as: -60 °C, 23 °C, and 80 °C. The influence of speed of testing from 2 mm/min up to 6 m/s...
VIBRATIONS ANALYSIS OF A MECHANICAL SYSTEM CONSISTING OF TWO IDENTICAL PARTS
In many technical applications (like those in automotive engineering or in structural mechanics) the mechanical system studied can be considered composed by two or many identical subsystems or parts. These kind of symmet...
HUMAN-ROBOT INTERACTION AND TRACKING USING LOW COST 3D VISION SYSTEMS
This paper describes a platform which allows humans to interact with robotic arms using augmented reality. Low cost “kinect” cameras (Xbox 360) are used for tracking human skeletons and locations of robot’s end effectors...
HOT AIR ENGINE, DEVELOPED AND PATENTED BY TRAIAN VUIA, A ROMANIAN PERFORMANCE FOR 21st CENTURY
After thoroughly researching data from national archives, libraries, and important technical studies from Romania and abroad, I concluded that the hot air and closed-circuit engine built, tested, and patented by Romanian...