公开(公告)号：US08554527B2

公开(公告)日：2013-10-08

申请号：US13082688

申请日：2011-04-08

申请人： Daisuke Nishiura ,  Hide Sakaguchi

发明人： Daisuke Nishiura ,  Hide Sakaguchi

IPC分类号： G06G7/48

CPC分类号： G06F17/5009 ,  G06F2217/16

摘要： The memory size used in DEM calculation of particle having a particle diameter distribution is suppressed.A particle simulator includes a particle-information retaining unit 11 holding particle information including position and velocity information of a particle group, a particle-number changing unit 14 assigning particle numbers specifying particles in an order in accordance with the positions of the particles to the particle, a contact-candidate-list preparing unit 16 selecting particle pairs of a target particle and another particle that may be in contact with the target particle, a contact determining unit 18 calculating contact forces generated between particles in the particle pairs on the basis of particle information and storing the contact forces in the contact-force tables, a contact-force calculating unit 19 extracting contact forces of particles having a diameter greater than particles from contact-force tables using a contact-force reference table 54, extracting contact forces of particles having a diameter smaller than the particles by specifying the storage positions in the contact-force tables using integrated-contact-candidate numbers s_jgi[i], and calculating the sum of the contact forces, and a particle-information updating unit 20 updating the particle information on the basis of the contact forces of the particle.

摘要翻译： 抑制了具有粒径分布的粒子的DEM计算中使用的记忆体大小。 粒子模拟器包括：粒子信息保持单元11，其保持包括粒子群的位置和速度信息的粒子信息;粒子数改变单元14，根据颗粒的位置按照粒子的位置分配指定粒子的粒子数 接触候选者列表制备单元16，选择目标颗粒和可能与目标颗粒接触的另一粒子的粒子对;接触确定单元18，其基于粒子计算颗粒对中的颗粒之间产生的接触力 信息并将接触力存储在接触力表中，接触力计算单元19使用接触力参考表54提取具有大于接触力台的颗粒直径的颗粒的接触力，提取颗粒的接触力 通过指定存储位置，其直径小于颗粒 使用集成接触候选号码s_jgi [i]的接触力表，并计算接触力的总和，并且粒子信息更新单元20基于粒子的接触力来更新粒子信息。