FINITE ELEMENT ANALYSIS OF THE WARM DEEP-DRAWING PROCESS OF MAGNESIUM MATRIX COMPOSITE REINFORCED WITH CNTs

This paper reports on the finite element analysis of the warm deep-drawing process of 1vol% CNTs/AZ91D composite sheet. We prepare the simulation with two primary aims, first to have firsthand knowledge of warm deep-drawing process of the composite sheet, second to investigate the dependence of the drawing performance of 1vol% CNTs/AZ91D composite on forming temperature and blank holder force (BHF). Based on this simulation, we study deep-drawing performance of the CNTs/AZ91D composite under different forming temperature and different blank holder force conditions. We found that the composite sheet possess poor drawing performance below the forming temperature of 100 °C. With the increase of temperature, the deep drawing performance improved, and the drawing performance up to the top at 250 °C. In addition, the blank holder force (BHF) of the warm deep-drawing process should be selected from 5 kN to 8 kN for the composite sheet, which has a thickness of 1 mm and diameter of 160 mm.