三维管件成本估算研究

利用Pro／ENGINEER二次开发手段Pro／Toolkit,通过对锅炉管件三维模型特征件参数的提取,将三维建模技术与零部件成本估算方法集成,实现产品成本的快速准确估算,为设计初期较准确地获取零部件成本信息提供了一种有效的方法。     

行为建模在齿轮设计中的应用

本文阐述了行为建模的基本原理,说明了行为建模的设计过程,并通过行为建模技术在齿轮设计中的实际使用,对Pro／E行为建模优化设计进行了探索与实践,说明行为建模技术是一种灵活的、智能化的解决实际工程问题的方法,能有效地提高设计水平和效率。     

面向对象的三维参数化换热器管板的设计

以Pro／ENGINEER作为设计平台,利用其Pro／Toolkit模块,以VS．NET为平台开发动态链接库应用软件,通过菜单方式与Pro／ENGINEER集成。将MathCAD软件与Pro／ENGINEER集成实现复杂计算,并进行参数交互,最后再生模型,实现换热器管板的参数化设计。     

圆柱齿轮减速器的快速设计系统开发

通过对常用渐开线圆柱齿轮减速器结构的深入分析,采用实体建模、模块化、参数化等技术开发了圆柱齿轮传动的三维参数化快速设计系统。系统是以Pro／ENGINEER三维CAD软件为开发平台,以VisualC＋＋和Pro／TOOLKIT为开发工具,利用Pro／ENGINEER提供的接口程序进行二次开发的。该系统对提高减速器的生产效率,缩短开发周期,提高设计质量,降低设计费用,具有一定的实用价值,同时为产品的生产加工提供了实体模型,符合现代产品设计技术的发展要求。     

基于建筑信息模型的车辐式结构张拉仿真技术

针对车辐式索结构设计施工中存在的各专业信息协同不足、手动建模过程繁琐、二维图纸可视化程度较低、施工模拟仿真度较差等问题,结合某体育场屋盖工程,提出基于建筑信息模型（BIM）的张拉过程仿真技术.该技术的核心是设计施工的数据交互,通过结构分析数据提取、构件的参数化建模、二次开发程序接口编制、三维模型程序化建模、各个施工阶段分析等过程,解决了构件参数化设计、张拉过程模拟等问题.利用该技术可以完成节点深化设计,将建筑信息和结构信息整合到同一三维模型中.     

基于PRO/ENGINEER的螺旋立铣刀刀体建模

针对刀具生产企业在产品设计中仍然采用二维方法,效率低下且缺乏直观性的问题,创建了基于PRO/TOOLKIT参数化设计所需的可转位螺旋立铣刀刀体模型,应用PRO/ENGINEER软件对该类型刀具刀体进行三维建模,对于建模中的难点———刀片槽的建模提供了2种不同的解决方法并进行比较,所得模型已应用于参数化设计中。     

从AutoCAD到Pro/ENGINEER

以一个三维建模的实例，分析了AutoCAD与Pro／ENGINEER在三维建模过程中的共同点及其不同的地方，以期使那些已经对AutoCAD比较熟悉而初次接触Pro／ENGINEER的用户更容易掌握这一三维设计软件。     

基于Pro／E的风力转换装置的参数化优化设计

在常规设计中连杆机构的计算较为麻烦,利用PRO／ENGINEER的参数化设计,可以大大降低机构的计算难度,并利用PR0／ENGI-NEER的仿真模块模拟整个机构的运动过程并进行干涉分析,从而降低设计难度,节省生产成本。     

二级齿轮减速器参数化建模及机构仿真——Pro／ENGINEER工程应用

Pro／ENGINEER系统的特点是实体造型、单一数据库、基于特征的造型、参数化设计等代表当今世界CAD／CAM机械设计自动化应用软件最先进的技术,甚至现在已经在CAE方面也有它独特的特点。本文介绍了通过Pro／ENGINEER建立二级齿轮减速器传动系统参数化实体模型的方法和步骤,并在“Mechanism”模块中进行机构运动仿真和在“Mechanica”模块中进行结构分析,最后再将模型导入Adams进行动力学分析。     

数控高速铣刀参数化设计系统的开发

针对数控高速刀具开发的技术特点,采用Pro／TOOLKIT二次开发工具,在VC环境下,开发了数控高速铣刀参数化设计系统,应用系统给出了高速铣刀设计实例,通过有限元分析的方法,进行了高速刀具安全性的评价．该系统人机交互过程友好,可方便快捷地完成高速铣刀的参数化设计,缩短刀具开发周期约60％,为Pro／ENGINEER的二次开发工作提供了有价值的参考．     

基于GE90-30PLC实现的模拟化工过程计算机控制实验系统

本系统采用电子式模拟对象仪,通过组合设计构造了不同的化工过程对象特性,其控制设备采用GE90-30PLC实现数据采集及构成各种不同的控制系统,上位机组态软件选用GE Fanuc自动化监控软件CIMPLICITY HMI 4.01运行版,通过组态设计实现各类控制方案的实验系统,该实验系统可使学生具有面向实际化工过程计算机控制系统的真实感,对于提高学生解决工程实际问题的能力提供了一个非常好的实践平台.     

电渗滤水混凝土试验研究

实验分析了不同电压、不同水泥品种、缓凝剂对电渗滤水混凝土性能的影响.表明ZnO缓凝剂可以显著提高滤水混凝土的滤水速度,有力地保障了滤水混凝土的强度和耐久性.推导了电渗滤水量与滤水时间的关系公式,给出了可用于实际工程的电渗滤水混凝土配合比设计方法.     

有粘结预应力梁施工中的若干问题探讨

通过某有粘结预应力梁工程实例，分析和探讨预应力工程设计和施工中的几个关键问题，并据此提出合理化建议。     

UML在C#精品课程网站开发中的应用

UML（统一建模语言）是面向对象软件分析和设计的新技术,在介绍UML的基础上,采用Rational Rose工具对C#精品课程网站进行了UML系统建模,以实例证明了UML在软件分析设计中的技术优势.     

Science of empirical design in mining ground control

Many problems in rock engineering are limited by our imperfect knowledge of the material properties and failure mechanics of rock masses. Mining problems are somewhat unique, however, in that plenty of real world experience is generally available and can be turned into valuable experimental data.Every pillar that is developed, or stope that is mined, represents a full-scale test of a rock mechanics design. By harvesting these data, and then using the appropriate statistical techniques to interpret them,mining engineers have developed powerful design techniques that are widely used around the world.Successful empirical methods are readily accepted because they are simple, transparent, practical, and firmly tethered to reality. The author has been intimately associated with empirical design for his entire career, but his previous publications have described the application of individual techniques to specific problems. The focus of this paper is the process used to develop a successful empirical method. A sixstage process is described: identification of the problem, and of the end users of the final product; development of a conceptual rock mechanics model, and identification of the key parameters in that model;identification of measures for each of the key parameters, and the development of new measures(such as rating scales) where necessary; data sources and data collection; statistical analysis; and packaging of the final product. Each of these stages has its own potential rewards and pitfalls, which will be illustrated by incidents from the author's own experience. The ultimate goal of this paper is to provide a new and deeper appreciation for empirical techniques, as well as some guidelines and opportunities for future developers.     

基于新的MDO方法的整车抗撞性设计及优化

多学科设计优化(Multidisciplinary design optimization,MDO)方法能够有效解决大规模复杂工程系统的设计问题,为了更好地处理经常遇到的准可分MDO问题,提出了一种基于罚函数的两级交替优化方法(Two-level alternating optimization method based on penaltyfunction,PAO)。PAO基于分解协调策略,首先将准可分MDO问题分解为一个系统级问题和多个子系统级问题,然后通过交替求解达到子系统间的一致性。首次使用PAO方法对整车抗撞性进行设计优化,计算结果验证了该方法的有效。     

Modeling of C3 I system in laser countermeasure weapon system

With the spectrum extended in modem Electronic War, Laser Countermeasure Weapon will be requested in order to snatch up and keep the Electromagnetism-Power in war field. If Command, Control, Communications and Intelligence called Double-Army-Power-Implement is applied to general design of Laser Countermeasure Weapon System, the efficiency of Weapon System can be greatly improved. The Object-Oriented analysis and design approach based on UML for C^3I system architecture was put forward, by which logical： archi- tecture described by class diagrams and behavior diagrams can be developed through Object-Oriented analysis, and physical architecture described by component diagrams and deployment diagrams can be developed through Object-Oriented design. The framework Of Modeling based UML was firstly set forth, the high process of Command, Control, Intelligence, Surveillance, Reeo.nnaissance and UML Architecture was utilized. , Then the Modeling process was particularly discussed through following the core ideology and basic principle of RUP （ Rational Unified Process）. Next, a series of diagrams of UML diagram which include Activity diagrams, Use Case diagrams, Sequence diagrams, Package diagrams and Class diagrams of system analysis, Component dia- grams, and Deployment diagrams of system design are illustrated in the process of Modeling of C^3I system software. Lastly, some problems that should be noticed in the Modeling process, merit and demerit of model, next works were also put forward.     

Theory and application of the transient injection well test

1 Introduction One of the key problems in hydraulic power projects, mining drainage, water flooding of oil fields and geological hazard control projects is to determine the hydrologic char- acteristics of the water-bearing layer (such as seepage flow radius, permeability coeffi- cient or transmissibility coefficient, storage coefficient or specific water yield and pres- sure conductivity coefficient) in geologic bodies. One of the effective methods is the pumping well test which has been widel…     

基础隔震时瓷质电气设备的地震反应分析

运用有限元分析方法，对具有隔震基础的高耸瓷质电气设备进行了动态特性分析和地震反应研究。提出了适合于该类设备地震反应分析的理论计算模型与算法。通过工程实例计算，讨论了该设备的抗震与隔震等问题，为该设备的国产化定型设计提供了一定的理论依据和指导性设计准则。     

Theory and application of the transient injection well test

Based on the theory of the pumping well test, the transient injection well test was suggested in this paper. The design method and the scope of application are discussed in detail. The mathematical models are developed for the short-time and long-time transient injection test respectively. A double logarithm type curve matching method was introduced for analyzing the field transient injection test data. A set of methods for the transient injection test design, experiment performance and data analysis were established. Some field tests were analyzed, and the results show that the test model and method are suitable for the transient injection test and can be used to deal with the real engineering problems.