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双语推荐：动力学分析

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研究滚动轴承动力学模型,重点讨论轴承-转子系统动力学模型及其应用,介绍轴承动力学分析软件,分析轴承动力学研究存在的问题,并展望其发展趋势。
The dynamics models for rolling bearings is reviewed,and the dynamics models for bearing-rotor system and its application are discussed.The dynamics analysis software for bearings is introduced.The existing problems are dis-cussed about dynamics research of bearings,and the development tendency is prospected.

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深水下放作业钢丝绳动力学分析对于深水水下安装、维修等作业的顺利实施和缆体动力行为的虚拟仿真都具有重要意义。借助于动力学分析软件ADAMS对钢丝绳的动力学进行分析,确定了影响钢丝绳动力学响应的主要因素,提高了钢丝绳动力学虚拟仿真结果的精度和可靠性,对钢丝绳动力学的虚拟仿真具有指导意义。
Dynamic analysis of wire rope in deepwater lowing operation has important significance to the smooth implementation of deepwater installation and maintenance and the cable body virtu-al simulation of dynamic behavior.Based on modeling and calculation of dynamic analysis for wire rope in dynamic analysis software ADAMS,the main factors to impact the dynamic response can be determined and we can guide dynamics calculations in virtual simulation system and improve the reliability of the results.

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针对微重力环境下颗粒物质动力学过程表现出与常规重力场环境迥然不同特征,综述颗粒物质振动、碰撞、流动研究成果,分析总结颗粒动力学机制与特点,认为应加强对微重力环境下颗粒物质动力学行为机理研究,尽早提出微重力下颗粒动力学性质分析思路与动力学模型。
In the twenty-first century,with human space activities becoming frequent,much attention is being paid to dynamic behaviors of granular materials in space microgravity environment such as on the Moon and Mars.Due to the effect of microgravity environment,the dynamic process of granular materials shows a series of characteristics which are very different from those in the conventional gravity environment.The research results of vibration,collision and flow of granular materials in microgravity environment were summarized.The dynamic mechanism and characteristics of particles were analyzed and summarized.The research on the dynamical mechanism of particles was proposed to be especially strengthened in the future study of granular materials dynamics in microgravity environment.It is expected to bring forward as soon as possible some ideas of analysis on dynamic characteristics and dynamic models about particles under microgravity.

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传统方法构建的人体动力学仿真模型只能求解整体受力和发力参数,对各个关节驱动作用力矩的求解模型未提及。提出一种基于7连杆模型结构的人体下肢动力学分析模型,引入机械系统动力学分析用的ADAMS软件到人体动力学分析中,求解各种运动模式下人体下肢左右腿各关节驱动作用力矩。对人体运动Lagrange动力学方程式进行优化求解,得出详实的理论分析值和仿真数据,并进行对比分析。仿真实验表明,构建的单腿支撑和跑步运动模型下的人体下肢动力学分析模型,能有效准确地仿真计算出人体下肢全部关节的驱动力矩,仿真结果为分析人体最佳发力模式,指导和优化体育训练具有很好的理论参考价值。
The traditional method of the human body dynamics model only solved the overall force and power parameters, but the detailed joints were not analyzed. The human lower limb dynamic analysis model was proposed based on 7 bar link-age model structure. The ADAMS software was used as the platform, and the joints driving torques were computed as the fi-nal results based on the optimal Lagrange dynamics equation. The detailed theoretical and simulation data were got. Simula-tion results show that the constructed models can calculate the drive torque of lower limbs effectively and accurately for all joints, it provides best force pattern, and it has important value in guiding and optimizing the sports training.

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为准确描述液压挖掘机机械臂动力学模型,根据柔性多体动力学理论,采用模态函数描述臂架的弹性变形,利用LAGRANGE定理和虚功原理建立挖掘机臂架系统刚柔耦合的非线性动力学方程。对已建立的动力学方程利用MATLAB进行数值求解,运用仿真软件ADAMS及NASTRAN建立液压挖掘机机械臂刚柔耦合模型并进行仿真分析,通过对比二者结果表明动力学方程建模方法的正确性,运用数值求解方法进行模态计算和动力学响应分析,求解相关几何参数的一阶固有频率灵敏度,分析了影响机械臂动力学特性的主要模态参数,为进一步研究其结构优化及运动精度控制提供依据。
In order to accurately describe the dynamic model of hydraulic excavator''s mechanical arm,modal functions were adopted to describe the elastic deformation of the mechanical arm.Lagrange theorem and the principle of virtual work were used to establish rigid-flexible coupling nonlinear dynamic equations of the arm frame system.The dynamic equations were numerically solved by MATLAB.The rigid-flexible coupling model of the arm was established and simulated by the simulation software ADAMS and NASTRAN.It is shown that the modeling method of dynamic equations adopted in this paper is correct by comparing the both results.The modal responses were numerically calculated the sensitivity of the first natural frequency to the geometric parameters related was investigated and the main modal parameters were analyzed which influence dynamic characteristics of the arm.The results provide the basis for the further optimization of excavator structure and the motion error control.

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对离心振动复合环境系统进行动力学建模,分析离心机和振动台的结构特点和作用机理,采用多刚体动力学的研究方法,基于Hamilton原理得到系统的Lagrange方程建立了振动台系统多刚体动力学方程,最后建立了离心振动复合系统的动力学模型,并给出系统方程动力学响应分析的求解方法。
The dynamical modeling of centrifugal force-vibration compound environment experiment system is clearly formulated in this paper. Based on the analysis of the structural characteristic and the action mechanism between the centrifuges and the vibrator, the mufti-rigid body dynamics is adopted to formulate the mechanics model of vibrator installed on the arm of centrifuge. Then the dominant motion equation that is based upon Hamilton principle and Lagrange motion equation is obtained. Thereby the governing function of centrifugal force-vibration compound environment experiment system is obtained and the relevant numerical solution methods of the dynamics response are given.

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本文通过分析风电机组传动系统动力学相关知识以及国内外相关研究,介绍了为进行传动系统动力学分析技术研发所开展的两个科学研究和项目示范,最终在顺利完成科研课题的基础上,摸索出一套风电机组传动系统动力学分析的流程,并制定了相关的指导规范。
Tis paper illustrates the importance of dynamic analysis of wind turbine drive research and related research at home and abroad, then introduces the system dynamics analysis for drive research technology research carried out by the two scientifc research and project demonstration. Based on the two scientifc research projects, this paper released the guide line for the analysis of wind turbine drive system.

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文章主要介绍了热分解动力学在含能材料中的重要性，列举了热分解动力学的主要分析方法及几种常用的反应机理，并对其进行简要分析。热分析技术具有快捷简便、准确度高以及适用范围广的特点，在含能材料的热分解动力学中发挥重要作用。热分解动力学广泛应用于含能材料的动力学参数的求解、反应机理的推断以及动力学补偿效应的确定，为其有效使用寿命的预测以及安全性能的评定等提供科学依据。同时，热分析技术的自身完善以及与其他技术的联机使用将促进热分解动力学的不断发展。
The importance of thermal decomposition kinetics in energetic materials was introduced .The main analysis methods of thermal decomposition kinetics and several kinds of reaction mechanism were enumerated and analyzed .Because thermal analysis technology has many advantages including simple and quick operation , high accuracy and extensive appli-cation, it plays an important role in the thermal decomposition kinetics of energetic materials .Thermal decomposition kinetic is widely applied in the obtaining of kinetic parameters , the inference of reaction mechanism and kinetic compensation effect for energetic materials .It provides scientific basis for the prediction of service life and evaluation of safety performance of energetic material .Meanwhile, self-improvement of thermal analysis techniques and combination with other laboratory instruments will promote the development of thermal analysis kinetics .

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基于虚拟样机技术,用ADAMS/ATV模块建立了某型履带车辆紧急制动的动力学模型。通过实车的行驶试验和紧急制动试验对模型进行了验证,结果表明所建动力学模型在反映履带车辆行驶及紧急制动动力学行为方面能够满足工程分析的需要。将其作为分析平台,对履带车辆进行了下不同坡度路面在不同制动工况下的紧急制动的动力学仿真分析,通过仿真结果,对研究履带车辆下长坡紧急制动的动力学行为具有很大的参考价值。
Based on virtual prototyping technology, emergency braking dynamic model of a certain tracked vehicle was established by means of ADAMS/ATV software. By travel test and emergency braking test of the tracked vehicle, VV&A of the emergency braking dynamic model was carried out and its credence was proved. The results show that the model can meet the needs of engineering analysis on dynamics behavior of travel and emergency braking. Using it as a simulation base, emergency braking dynamic simulation analysis of the tracked vehicle was carried out about the tracked vehicle on different slope of the road with different braking condition. Through the results, it has an important reference value for studying dynamics behavior of the emergency braking of tracked vehicle on the slope road.

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对国内外学者提出的高聚物结晶动力学方程进行了归纳,列举了较成熟的2种等温结晶动力学方程和7种非等温结晶动力学方程,分析不同方程产生的基础和存在的意义,总结现有方程的局限性,提出高聚物结晶动力学方程的研究方向。
In this paper, crystallization kinetic equations of polymers suggested by researchers were concluded, and two sorts of refined isothermal and seven sorts of non为isothermal crystallization kinetic equations were listed separately.Moreover, the generation foundation and existent significance of different equations were analyzed.The limitations of existing equations were summarized, and the development direction of crystallization kinetic equations of polymers was suggested finally.

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