研究相空间中离散力学系统对称性的摄动与绝热不变量。
The perturbation of symmetries and adiabatic invariants of discrete mechanical systems in the phase space are studied.
本文主要分析了一类离散神经元模型的动力学行为。
In this paper, we mainly discuss the dynamical behavior of a discrete neural model.
基于局部作用原理，借用有限元离散和插值技术，引入元胞自动机的演化思路，得到一种新的力学计算方法——元胞单元法。
Based on principle of local action and the idea of cellular automata, a new mechanical method cellular element method is presented through inducting the discrete techniques of finite element method.
根据力学系统与电学系统物理量间的对应关系，提出了用电路定律处理线性离散系统谐强迫振动的方法。
Making use of the analogous relations between mechanics and electrical circuit, a method is presented to deal with linear discrete system.
空气冲击湿砂造型过程有着本身的特点：快速冲击，离散的材料体系，材料非线性和几何大变形并存，是一个非常复杂的力学过程。
The pneumatic moulding is a very complex mechanical process with the features of fast impact, discrete materials, combined geometrical and material nonlinearity.
根据流体力学原理，用离散涡方法建立了在复平面上模拟喷嘴出口流场的一套完整模型。
On the basis of fluid mechanics, a comprehensive model for simulating flow field at nozzle exit is developed by using desecrate vortex method.
其中连续动力学由微分或者差分方程描述，离散动力学由有限的自动开关描述，并由异步的离散事件驱动。
The continuous dynamics is governed by differential or difference equations, whereas the discrete dynamics is governed by finite automata that are driven asynchronously by external discrete events.
论述了胶带输送机整机动态分析中离散系统力学模型的建立方法，从而为胶带输送机的动特性分析提供了一个新途径。
The mechanical model of discrete system is built to describe the dynamic characteristic of rubber belt conveyer. Thus a new way of dynamic analysis is given for rubber belt conveyer.
在第二章，我们研究了密度依赖生育脉冲对单种群阶段结构离散模型的动力学行为的影响。
Firstly, we propose and study the single-species discrete population model with stage structure and birth pulses.
本文仅从力学方面用离散元软件udec分析了洞室围岩的单层衬砌支护特性。
This paper analyzes the surrounding rock characteristics of single shell lining only from the mechanical mechanism aspects using the discrete element software of UDEC.
物理和资讯理论汇流自量子力学中心准则：自然根本是离散而不连续的。
The confluence of physics and information theory flows from the central maxim of quantum mechanics: at bottom, nature is discrete.
主要通过考虑介观电容的耦合能，对离散电荷介观LC电路中的电荷与电流的动力学行为进行了研究。
This paper mainly investigates dynamic behavior of charge and current in a mesoscopic LC circuit with discrete charge by considering coupling energy of the mesoscopic capacitor.
根据半球谐振陀螺的动力学方程和闭环反馈理论，推导出离散激励器和信号检测器在壳体环向的角度配置；
According to the dynamical equation and the theory of closed loop feedback, the angle scheme of signal detector and discrete exciter in circumferential direction is deduced.
将岩石力学中的研究方法———离散单元法引入塑料挤出固体输送研究中，并建立了固体输送段的离散输送模型。
This paper introduced the discrete Element Method which was used in rock mechanics into the research of polymer extruder's solid-conveying zone, and set up a discrete transport model.
为了深入研究，我们在模型中采用离散热力学分析并定义了在机床导轨热控制中广义热阻的概念。
For the deep research, we apply the discrete thermodynamic analysis and define the concept of the virtual thermal resistance in the heat control of the machine tool guide.
开发了离散元框架内的网格实体模型（SLM），模拟拆除爆破中结构倒塌的复杂动力学过程。
The SLM is developed to simulate the complicate dynamic process for structural collapse of demolishing blast in frame of DEM(Discrete Element Method).
并利用离散化的方法建立了串联盘式管道连续输送机传动系统在无阻尼情况下的动力学模型。
Besides, the dynamic model in driving system of the conveyer is established with through scattered method on no damping occasion.
提出了采用基于颗粒接触力学原理的离散元法对耕作土壤动力学问题进行数值模拟的新思路。
A new simulation strategy using the Discrete Element Method (DEM) based on spherical particle contact mechanics to tillage soil dynamics was proposed.
导体元素的特点是其电学，光学，热学和力学参数，如大型离散目标。
Conductor element is characterized by its electrical, optical, thermal and mechanical parameters such as large discrete targets.
离散涡方法已成为计算流体力学中倍受人们青睐的一种数值方法。
Discrete Vortex Method (DVM) is a very important numerical approach in Computational Fluid Dynamics.
本文主要针对离散时间动力系统的动力学性质研究，包括差分方程及离散人工神经网络两个方面的研究。
This dissertation aims at the study of dynamical properties of discrete-time dynamical systems, which include difference equations and discrete neural networks.
首先，将系统动力学方程转化为离散的可观标准型状态方程；
To start with, the system dynamic equation is transformed into discrete-time state equation in observable canonical form.
采用3节点或4节点空间板壳单元离散整个白车身，建立了细化力学模型。
Dispersing the whole BIW with 3d shell elements of 3 or 4 nodes created the fine FEM model.
本文研究了一类二元离散人工神经网络模型的解的收敛性及周期解的存在性等动力学特征。
This thesis has studied the dynamic features of a class of the discrete-time neural network model of two neurons, such as the convergence and periodicity and etc.
该方法既采用了有限元法处理离散结构的便利，又通过力学途径来减少所需求解的未知量。
The method not only possesses the FEM advantages for discrete structures, but also reduces the unknowns in structural analysis.
为解决工程应用中三维流固两相流动力学建模的难题，提出了基于离散单元法(dem)的颗粒群轨道柔性模型。
For dynamics modeling of 3d fluid-solids two-phase flows in engineering problem it was brought forward of particles trajectory flexible model based on the discrete element method (DEM).
在计算机模拟方面，我们引入了离散分子动力学(DMD)方法。
In the computer simulations, the Discrete Molecular Dynamics (DMD) method was induced.
土壤是典型的松散介质，利用粘连的颗粒离散元模型模拟土壤聚团的行成及破裂一直是散体力学的热点之一。
Soil is a typical unconsolidated medium, and it is one of the most popular questions that the simulation for the generation and fracture of soil agglomerate with adhesive particle DEM.
土壤是典型的松散介质，利用粘连的颗粒离散元模型模拟土壤聚团的行成及破裂一直是散体力学的热点之一。
Soil is a typical unconsolidated medium, and it is one of the most popular questions that the simulation for the generation and fracture of soil agglomerate with adhesive particle DEM.
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