| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily, accurately and sequentially simulate the behavior of each spherical medium in a mill vessel which carries out complex movement of rotation and oscillation, by using a relative coordinate system that is a coordinate system having a symmetric axis of the axisymmetric shaped mill vessel as one of coordinate axes. <P>SOLUTION: The behavior of the spherical medium packed in the axisymmetric shaped mill and carrying out rotation movement and oscillation movement is simulated by defining an absolute coordinate system K1 with the coordinate center fixed and a relative coordinate system K2 using one of axes as a symmetry axis, carrying out judgement of contact between the spherical medium and the mill-vessel wall surface in a coordinate system obtained by converting the coordinates from the absolute coordinate system K1 to the relative coordinate system K2 to obtain the contact angle of the spherical medium and the mill-vessel wall surface in the relative coordinate system K2, and then obtain the coordinates in the absolute coordinate system K1 by coordinate conversion. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
