Systemization of Simulation Software of Dynamical System by JavaBeans

JavaBeans动态系统仿真软件系统化

• 批准号: 11680196
• 负责人: ITO Masatoshi
• 金额: $ 1.09万
• 依托单位: Meijo University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11680196/
• 关键词: Simulation of Dynamical System of Particles; JavaBeans for mechanics Simulation; Tools for Development of Teaching Materials; 教材開発ツール; 力学シミュレーション; Java

The auther developed a method to constitute simulation software of dynamical system from component softwares of JAVA language. The component softwares are classified in three types corresponding to space-time, body and force which are constituents of dynamical system.. The range to be able to treat of this software system is limited to plane motion of a system of particles. Each body (a material point) exchanges information between the forces which act on the body and the body gets the next state by 4th order Runge-Kutta formulas. And the whole system functions as Solver of equations of motion as a simultaneous differential equations by doing this synchronously in the whole system. Even if a user who can't write a program by JAVA language can make programs of simulation of dynamical system by using these components under suitable development environment of JAVA language. This tool has the following characteristics. 1 : Two kinds of contact forces were introduced. One is a contact foce to act on between two bodies and the other is a contact force to act on between a body and a plane, and a contact collision and a constrained motion can be treated as motions under action of these forces. 2 : The motion of bodies is displayed on a window corresponding to a configuration space and graphs to show time dependence of dynamical energy of the system, time dependence of various kinds of physical quantities of a body and time dependence of relation between two physical quantities of a body are displyed on another windows. 3 : Equations of motion of the system of particles are made automatically when a user have made the simulation software of a certain system of particles by using this tools.

提出了一种用JAVA语言的组件软件构造动力系统仿真软件的方法。根据动力系统的组成要素时空、体和力，将构件软件分为三类。该软件系统能够处理的范围限于粒子系统的平面运动。每个物体（一个物质点）通过四阶龙格-库塔公式在作用于物体上的力之间交换信息，物体得到下一个状态。通过在整个系统中同步进行，整个系统作为运动方程的解算器，作为联立微分方程。即使不会用JAVA语言编写程序的用户，也可以在合适的JAVA语言开发环境下，利用这些组件编写动力系统仿真程序。该工具具有以下特点。1：介绍了两种接触力。一个是作用在两个物体之间的接触力，另一个是作用在物体与平面之间的接触力，接触碰撞和受约束的运动可以看作是在这些力作用下的运动。第二章：在与配置空间对应的窗口上显示物体的运动，并且在另一窗口上显示示出系统的动能的时间依赖性、物体的各种物理量的时间依赖性和物体的两个物理量之间的关系的时间依赖性的图形。第三章：当用户使用该工具制作某个质点系的仿真软件时，质点系的运动方程可以自动生成。

项目成果

Masatoshi ITO: "Development of A Simulator of Dynamical System (III)"KyouikuKougakuRonnbunnshu (Transactions of Educational Enginering). VOL.23. 23-27 (2000)

Masatoshi ITO：“动力系统模拟器的开发（III）”KyouikuKougakuRonnbunnshu（教育工程汇刊）。

伊藤正俊: "JavaBeansによる力学系シミュレータの開発(III)"教育工学論文集. VOL.23. 25-27 (2000)

Masatoshi Ito：“使用 JavaBeans 开发动态系统模拟器（III）”教育技术论文 VOL.25-27（2000 年）。

伊藤正俊: "JavaBeansによる力学系シミュレータの開発(II)"教育工学論文集. VOL.22. 7-9 (1999)

Masatoshi Ito：“使用 JavaBeans 开发动态系统模拟器（II）”教育技术论文 VOL.22（1999）。

Masatoshi ITO: "Development of A Simulator of Dynamical System (II)"KyouikukougakuRonnbunnshu (Transactions of Educational Enginering). VOL.22. 7-9 (1999)

Masatoshi ITO：“动力系统模拟器的开发（II）”KyouikukougakuRonnbunnshu（教育工程汇刊）。