基于AMESim的挖掘机动臂液压回路仿真研究

在AMESim中建立了液压挖掘机方向控制阀的模型及阀控动臂液压缸回路的仿真模型，根据实际测试结果设置了模型中的主要参数，并采用试验的方式对仿真模型进行验证，给出了试验和仿真曲线，并对仿真结果和试验结果进行了分析和比较，证明建立的仿真模型的有效性。     

针对Vissim模型仿真结果的差异性研究

使用微观仿真模型Vissim对一个简单信号交叉口进行多次仿真，以交叉口车辆通过率和延误为指标，分析了其差异性产生的原因，最终得到了仿真结果的差异性和仿真次数之间的关系。     

初始条件对输气管道动态仿真结果的影响分析

文章简要介绍了输气管道动态仿真过程中初始条件的确定方法，以西气东输管道系统为例，采用国际通用的TGNET软件研究了初始条件对输气管道动态仿真结果的影响规律。研究结果表明初始条件对动态仿真结果的影响随着时间不断衰减，即经过一段时间的仿真以后，就可以消除初始条件对动态仿真结果的影响。     

MATLAB仿真方法及其在建筑结构风振控制中的应用

从建筑结构控制理论出发，建立了混合控制系统的数学模型及标准状态方程，进而应用IVIATLAB语言中SIMULINK仿真分析方法，得到了系统仿真分析框图，进一步形成了风振作用下的模拟随机荷载，并通过设置系统参数进行了有效的调试。在上述研究的基础上，对仿真分析的结果进行了分析处理。本工作体现了SIMULINK仿真分析方法在建筑结构风振控制中的应用方面存在诸多优势。     

适于系统仿真的冷却塔模型及其实验验证

从热力学、流体力学和传热传质的基本原理出发，以TRNSYS为仿真平台，建立了冷却塔动态数学模型，并对其进行了实验验证，结果表明辨识参数较准确时，仿真结果精度较高、可靠性较好，适合于系统仿真研究。     

基于WEB的结构仿真试验

提出了基于网络进行结构计算机仿真试验的观点，并具体介绍了开发采用Browser/Server模式结构仿真系统的原理与步骤，最后，通过实例展示了用这种方法进行结构仿真的特点及优势。     

宁波城市建模及数字仿真规划建设拉开序幕

2009年1月，宁波市规划局发文《关于成立城市建模及数字仿真规划工作领导小组的通知》，并起草了《关于加强城市三维建模及数字仿真规划工作的意见》，向市领导作了专题汇报，力争从2009年开始到2010年为止，营造一个直观立体的三维仿真城市空间，实现宁波城市建模及数字仿真规划。     

装载机反转连杆机构工作装置的运动学仿真

对装载机反转连杆机构工作装置运动学仿真进行了探讨，介绍了机构运动学仿真的步骤和方法，及在Ａｐｐｌｉｃｏｎ图形工作站上实现了工作装置的运动学仿真。     

高速数字电路中信号完整性分析及仿真

针对高速数字电路中普遍存在信号完整性问题的现状，对信号完整性问题中的过孔地弹噪声进行了分析和仿真，提出了减少地弹噪声的方法。首先从理论上介绍并分析信号完整性在高速数字电路设计中的重要性，接着分析了过孔地弹噪声破坏信号完整性的原因，最后结合实际电路，使用SPEED2000仿真软件分别对地弹噪声进行仿真，通过对仿真结果的分析，验证了该方法的有效性。该分析和仿真的方法对信号完整性问题的研究有一定的借鉴和指导作用。     

工程管理专业虚拟仿真教学建设意愿与阻碍因素研究

新一轮科技革命和产业变革背景下，虚拟仿真教学为工程管理专业提供了全新的信息汇总渠道和高质量的实践操作模块，拓展了实验教学的深度和广度，实现了实验教学与信息技术的融合。为深入了解新工科背景下工程管理专业建设虚拟仿真教学项目的建设情况，本研究面向全国工程管理专业教师开展问卷调查，收集了当前工程管理专业中虚拟仿真教学项目建设数据，通过了解工程管理专业虚拟仿真教学项目建设意愿，分析了建设虚拟仿真教学项目的阻碍因素，并提出了对策和建议。数据显示，仅有22.54%的受访者申请或参与了虚拟仿真教学课程建设，超过90%的受访者认为虚拟仿真教学对工程管理与工程造价专业人才培养来说很重要或比较重要，并认可其作用。其中，影响教学建设意愿的主要阻碍因素包括缺乏资金、技术支撑和相关资源支持等。研究结果对推动工程管理专业虚拟仿真教学项目建设具有重要实践意义，相关建议和对策可为高校相关专业教学建设提供借鉴和参考。     

混杂纤维布约束混凝土柱力学性能的研究

通过对碳纤维布、玄武岩纤维布和玻璃纤维布混杂约束混凝土圆柱的轴心受压试验,测得了混杂纤维布约束混凝土的轴心抗压强度、峰值应变、应力-应变关系,分析纤维布混杂方式对混凝土约束效果的影响。建立新的混杂纤维约束混凝土柱强度模型和应力-应变全过程整体模型,通过与试验结果比较,发现新的模型计算准确,与Teng等的模型相比,不需要分段拟合,计算简单,且同样适用于单一纤维约束情况。     

Developing an evacuation evaluation model for offshore oil and gas platforms using BIM and agent-based model

Accidents on offshore oil and gas platforms (OOGPs) usually cause serious fatalities and financial losses considering the demanding environment where such platforms are located and the complicated topsides structure that the platforms have. Conducting evacuation planning on OOGPs is challenging. Computational tools are considered as a good way to plan evacuation by emergency simulation. However, the complex structure of OOGPs and various evacuation behaviors can weaken the advantages of computational simulation. Therefore, this study develops a simulation model for OOGPs to evaluate different evacuation plans to improve evacuation performance by integrating building information modeling (BIM) technology and agent-based model (ABM). The developed model consists of four parts: evacuation model input, simulation environment modeling, agent definition, and simulation and comparison. Necessary platform information is extracted from BIM and then used to model the simulation environment by integrating matrix model and network model. In addition to essential attributes, environment sensing and dynamic escape path planning functions are developed and assigned to agents in order to improve simulation performance. Total evacuation time for all agents on an offshore platform is used to evaluate the evacuation performance of each simulation. An example OOGP BIM topsides with different emergency scenarios is used to illustrate the developed evacuation evaluation model. The results show that the developed model can accurately simulate evacuation and improve evacuation performance on OOGPs. The developed model is also applicable to other industries such as the architecture, engineering, and construction industry, where there is an increasing demand for evacuation planning and simulation.     

裂缝性砂岩油藏水驱效果的物理及数值模拟

为了研究裂缝性砂岩油藏中油水渗流规律以及裂缝对油田开发的影响，利用岩石薄板模型，对6种不同裂缝形态下平行裂缝对水驱油过程进行了物理模拟，通过对水驱油效果的分析比较，得出了不同裂缝形态下水驱油渗流规律：根据裂缝性砂岩油藏的储层特点，建立了裂缝性砂岩油藏渗流等效连续介质模型，利用数值模拟的手段，研究了裂缝性砂岩油藏水驱油特征以及裂缝形态对开发的影响；通过物理模拟和数值模拟结果的对比，验证了等效连续介质模型在裂缝性砂岩油藏渗流模拟中的适用性。     

交通荷载作用下饱和软粘土孔压模型的数值模拟

通过不同循环加载条件下的模型模拟试验、现场原型监测试验及理论分析,研究在交通荷载条件下,动孔隙水压力累积特性及发展规律.试验取得了交通荷载作用下路基土动孔隙水压力产生、发展、累积的宝贵资料;利用FLAC3D对孔压模型进行了数值模拟,并与试验所取得的孔隙水压力曲线进行了对比分析,得出了数值模拟的结果是准确有效的.     

基于IHACRES和GLUE的降雨径流过程模拟

根据降雨径流过程的特征,修正了IHACRES水文模型,并将其与GLUE方法结合,提出了资料缺乏区域降雨径流的分析方法,该方法包括模型参数范围的确定、参数组的筛选与权重的计算、验证与不确定性评价、预测等。利用该方法对深圳石岩河流域两场降雨径流过程的分析表明:模型校准和验证的Nash效率系数R2分别为0.917和0.59,验证时实测径流量基本位于90%置信度预测区间内。该方法对研究流域降雨径流过程的模拟效果较好,径流预测及其不确定性分析可靠,其结果可为资料缺乏区域初期雨水截留规模的设计和方案优化提供依据。     

Integrated wheel loader simulation model for improving performance and energy flow

This paper describes an integrated wheel loader simulation model for improving performance and energy flow. The proposed integrated wheel loader simulation model includes a driver model that is designed to perform the two objectives of working and driving. The driver model for working was designed according to eight conditions considered as events and environment information. The driver model for driving is composed of throttle, brake, and steering inputs which represent an actual driver's input characteristics. By analyzing experimental test data of V-pattern working, human driving characteristics have been derived and applied in the driver model by using linear quadratic regulator (LQR) and model predictive control (MPC). The wheel loader dynamic simulation model with the driver model used in this study consists of four parts: mechanical powertrain, hydraulic powertrain, vehicle dynamic model, and working dynamic model with a simplified load model. All simulation models have been constructed in the Matlab/Simulink environment, and the proposed driver model has been validated from experimental test data. Working performance with the optimized path, energy flow, and loss analysis during V-pattern working was predicted and evaluated with the developed human driver and dynamic simulation model of a wheel loader. The driver model can be utilized in the design stage for prediction and evaluation of a wheel loader's working performance. It is also expected that an investigation of the optimal working pattern and energy flow for various working cycles of wheel loaders will be possible with the driver-model-in-the-loop simulation.     

Combination of a fire model and a smoke sensor model

A combination between a fire model and a smoke sensor model has been developed. For the realization of the combined fire and smoke sensor model, output parameters of the fire model have to be converted into input parameters of the sensor model. With respect to the simulation of the smoke evaluation during a fire, most fire models give the smoke mass density as a result. For the simulation of a smoke sensor, information about the size distribution of the smoke particles is needed. The developed model gives the opportunity to simulate the response of a smoke sensor whereby the simulation of the fire is included. The goal of the development of this combined model was to provide a tool for the simulation of EN54 test fires. The model has been validated for EN54 test fires, and results of numerical simulations of EN54 test fires with this combined model are presented and discussed.     

灭火弹点火瞬态内流场仿真计算分析

为了提高灭火弹仿真计算的准确性,针对影响仿真结果的主要因素——发生剂燃速模型、入口条件简化模型和发生剂点火判定条件,分别进行计算分析。最终建立了以推进剂为驱动源的灭火弹工作瞬态过程仿真计算模型,与试验值拟合良好。仿真结果表明：燃速模型的选取主要影响点火压强峰之后的压力-时间曲线;点火燃气模型的选取主要影响点火压强峰的出现时间与强度;点火判定模型的选取可以使升压曲线在时间上整体前移或后移。     

3D AR-based modeling for discrete-event simulation of transport operations in construction

This study proposes a 3D visualized modeling method for DES of transport operations in construction. The 3D simulation model built is a virtual field scene with property settings. AR technology was further applied to allow the use of a real-world image as the modeling background, which pictorially presents the current status of the real site as a visual basis for modeling. A typical transport operation was analyzed to determine the component classes for modeling. Then the visual representation and attributes of each modeling component class were proposed, along with modeling rules to build the 3D simulation model. A prototype system with STROBOSCOPE as the simulation engine was developed for presenting the proposed modeling method. A set of transformation rules was proposed for converting a 3D simulation model to a STROBOSCOPE input file. The system automatically extracts the simulation output and animates the 3D model to visually demonstrate the simulation result.     

基于PSIM的光伏电池的仿真

指出光伏电池是光伏发电系统的主要元件,对其特性的研究有着重要的意义,介绍了利用PSIM软件建立光伏阵列的仿真模型,并对仿真效果进行了分析,得出该模型仿真精度高,能够准确地反映其物理特性,为光伏发电系统的仿真分析提供了依据。