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1. 发明专利

JP2011081530A Discrete element method analysis simulation method for particle model, discrete element method analysis simulation program and discrete element method analysis simulation device 审中-公开
标题翻译：离散元素分析模拟方法分析模型，离散元素方法分析模拟程序和离散元素分析模拟设备
公开(公告)号：JP2011081530A
公开(公告)日：2011-04-21
申请号：JP2009232159
申请日：2009-10-06
申请人： Kinzoku Giken Kk , Prometech Software Inc , Univ Of Tokyo , プロメテック・ソフトウェア株式会社 , 国立大学法人東京大学 , 金属技研株式会社
发明人： SAKAI MIKIO , YAMADA SACHINORI , FUJISAWA TOMOMITSU , HIRAYAMA SHUICHI , NAKAJIMA TAKESHI , TSUCHIYA MASAO
IPC分类号： G06F19/00 , G01N19/02
摘要： PROBLEM TO BE SOLVED: To provide a discrete element method analysis simulation method, a discrete element method analysis simulation program and a discrete element method analysis simulation device, wherein a polygonal particle model introduced with rolling resistance, i.e., rotary motion of polygonal particles is introduced. SOLUTION: This discrete element method analysis simulation method for analyzing behavior of a large number of analysis target particles includes: a step of imparting a physical property value to a virtual particle; a virtual particle arrangement step of arranging the virtual particles; and a behavior simulation step of simulating the behavior of the analysis target particles. The behavior simulation step includes a step of measuring a particle attitude angle between the analysis target particles and/or the virtual particles. In the behavior simulation step, about the analysis target particles and/or the virtual particles, the behavior of each particle is obtained by solving a motion equation formulated based on the rotary motion. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种离散元素分析模拟方法，分立元素分析模拟程序和离散元素分析模拟装置，其中引入滚动阻力的多边形粒子模型，即多边形的旋转运动引入颗粒。解决方案：用于分析大量分析目标粒子的行为的离散元素分析模拟方法包括：赋予虚拟粒子物理属性值的步骤; 虚拟粒子排列步骤，配置虚拟粒子; 以及模拟分析目标粒子的行为的行为模拟步骤。行为模拟步骤包括测量分析对象粒子和/或虚拟粒子之间的粒子姿态角度的步骤。在行为模拟步骤中，关于分析目标粒子和/或虚拟粒子，通过求解基于旋转运动形成的运动方程来获得每个粒子的行为。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2009129193A Fluid analyzing method with computer 审中-公开
标题翻译：流体分析方法与计算机
公开(公告)号：JP2009129193A
公开(公告)日：2009-06-11
申请号：JP2007303583
申请日：2007-11-22
申请人： Prometech Software Inc , Univ Of Tokyo , プロメテック・ソフトウェア株式会社 , 国立大学法人東京大学
发明人： KOSHIZUKA SEIICHI , KONDO MASAHIRO , FUJISAWA TOMOMITSU
IPC分类号： G06F19/00 , G06F17/50
摘要： PROBLEM TO BE SOLVED: To provide a fluid analyzing method with a computer for suppressing pressure vibration by an MPS method without changing the density of fluid in fluid analysis by the MPS method. SOLUTION: This fluid analyzing method with a computer for carrying out fluid analysis related with incompressible fluid by executing the calculation algorithm of an MPS method with the computer includes: a first stage S10 including a step S44 for calculating a viscous term or the like and steps S45 and S46 for calculating the temporary speeds and temporary positions of particles; and a second stage S20 including a pressure term calculation step for calculating a pressure term based on Poisson equation and a step for correcting the temporary speeds and temporary positions of the particles. In the pressure term calculation step, for example, the pressure term is calculated by using the Poisson equation using preliminarily prepared number of particle density n k (step S48), and an auxiliary pressure is calculated by a formula using particle number density n k and preliminarily prepared number of particle density n 0 , and added to the pressure term (step S49). COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了通过MPS方法提供一种用于通过MPS方法抑制压力振动的计算机的流体分析方法，而不通过MPS方法改变流体分析中的流体密度。解决方案：通过用计算机执行MPS方法的计算算法，该计算机进行与不可压缩流体相关的流体分析的流体分析方法包括：第一阶段S10，包括用于计算粘性项或步骤S44的步骤S44 以及用于计算颗粒的临时速度和临时位置的步骤S45和S46; 以及包括压力项计算步骤的第二阶段S20，该压力项计算步骤用于计算基于泊松方程的压力项和用于校正颗粒的临时速度和临时位置的步骤。在压力项计算步骤中，例如，使用预先准备好的粒子数密度n k 的泊松方程来计算压力项（步骤S48），辅助压力通过式使用粒子数密度n k ，并预先准备数量的粒子密度n 0 ，并加到压力项（步骤S49）。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2005196273A Mesh generating system and mesh generating program 审中-公开
标题翻译： MESH生成系统和MESH生成程序
公开(公告)号：JP2005196273A
公开(公告)日：2005-07-21
申请号：JP2003435443
申请日：2003-12-26
申请人： Prometech Software Inc , Techno Star:Kk , プロメテック・ソフトウェア株式会社 , 株式会社テクノスター
发明人： INABA MASAKAZU , FUJISAWA TOMOMITSU , YAGAWA MOTOKI
IPC分类号： G06F17/50
摘要： PROBLEM TO BE SOLVED: To efficiently retrieve nodal points when forming mesh, and also execute parallel processing by a plurality of processing elements.
SOLUTION: The respective processing elements 12 have a CDT processing part 16 for forming the mesh such as the respective elements become restrictive Deloney (CDT) division on the basis of a surface patch for defining the nodal point arranged inside an object and a surface shape of the object, and a quasi-restrictive Deloney division (SCDT) processing part 18 for selecting a new nodal point where a figure made of a nodal point of an element and a new nodal point does not cross with any surface patch and does not cross any of pre-formed elements, that is, the new nodal point where any nodal point does not exist inside the figure made of the nodal point of the element and the new nodal point, for retrieving a satellite nodal point for forming a nodal point of a certain element and a new nodal point when the element does not satisfy the CDT.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在形成网格时有效地检索节点，并且还通过多个处理元件执行并行处理。解决方案：各个处理元件12具有用于形成网格的CDT处理部分16，其中各个元素基于用于定义布置在对象内的节点的表面贴片成为限制性的Deloney（CDT）划分，以及物体的表面形状以及用于选择新的节点的准限制性Deloney分割（SCDT）处理部分18，其中由元件的节点和新节点形成的图形与任何表面贴片不相交，并且没有交叉任何预先形成的元素，即新的节点，其中在由元素的节点和新节点形成的图形内部不存在任何节点，用于检索用于形成节点的卫星节点当元素不满足CDT时，某个元素的点和新的节点。版权所有（C）2005，JPO＆NCIPI

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