高桩承台桩基计算

根据现行规范及桩基计算理论,编写了计算程序,通过算例分析比较,程序计算结果比较精确,可以使用程序方便地计算高桩承台桩基的位移以及内力,从而为工程设计提供依据。     

一种料斗与压板联动的新型后装压缩式垃圾车

针对目前市场上所使用的后装压缩式垃圾车存在的结构缺陷，介绍了一种结构简单、易操控、改装成本低、整车轴荷分配合理、使用经济性好的新型后装压缩式垃圾车，并对该车的结构和工作原理进行了阐述。     

直线电机线路感应板高度调整技术探讨

感应板是直线电机线路中的重要设备，文章对感应板高度调整工作的特点进行了介绍，并进一步分析了感应板高度变化的原因，在此基础上提出了感应板高度调整工作的若干建议。     

桥头跳车对简支梁桥动力性的影响

通过公式推导,确定桥头跳车的计算模型,并建立在其影响下的车桥振动方程。对16m简支梁桥在桥头跳车的影响下进行动力效应计算,分析桥头跳车对车桥耦合系统的影响,具有一定的理论和实际意义。     

基于小波去噪的车牌定位系统

如何避免外界环境的变换对车牌定位的影响是一个有待研究的问题,介绍基于小波去噪的车牌定位系统及其在车牌定位流程中采用小波去噪法去除外界噪声对车牌定位影响的方法,通过边缘加强、中值滤波,最后通过垂直投影和水平投影对车牌精确位置进行检测,取得了较好的定位效果.     

激光焊接技术在舰船建造中的应用

介绍了激光焊接技术的发展历史、工业焊接用激光源的基本特点、激光焊接技术用于造船业的优势及其存在的困难,重点介绍了激光焊接技术在舰船建造中的应用实例,包括激光焊接大型船板、激光焊接型材、焊接瓦棱夹层板、激光焊接修复等,指出了在舰船建造中开展激光焊接技术研究的必要性。     

基于车牌识别的城市年票自动管理系统

年票制是提高公路通行效率的行之有效的办法,但由于年票征管部门监管不力,导致车辆恶意逃费所致的通行费流失严重,针对我国城市年票监管实际情况,提出一种基于车牌识别的城市年票自动管理系统.首先介绍了该系统的架构以及年票收费站管理和委托站次票监管两个子系统的工作原理,接着重点论述实现该系统的三项关键技术：车牌识别技术、数据同步技术、IC卡防伪技术.该系统已在广东省中山市投入使用,运行稳定可靠,受到客户的好评.     

Time-domain numerical and experimental analysis of hydroelastic response of a very large floating structure edged with a pair of submerged horizontal plates

This paper is concerned with the hydroelastic problem of a pontoon-type, very large floating structure (VLFS) edged with the perforated plates, non-perforated plates or their combination anti-motion device both numerically and experimentally. A direct time domain modal expansion method, taking amount of the time domain Kelvin sources in hydrodynamic forces, in which the fluid flows across the perforated anti-motion plate by applying the Darcy's law, is applied to the fluid–structure interaction problem. A quarter of numerical model is built based on the symmetry of flow field and structure in hydrodynamic forces, and special care is paid to the rapid and accurate evaluation of time domain free-surface Green functions and its spatial derivatives in finite water depth by using interpolation–tabulation method. Using the developed numerical tools and the model tests conducted in a wave basin, the response-reduction efficiency of the perforated plates is systematically assessed for various wave and anti-motion plate parameters, such as plate width, porosity and submergence depth. As a result of the parametric study, the porosity 0.11 is selected as the optimal porosity, and the relationship between the porosity and the porous parameter is developed by using the least-squares fitting scheme. After simulation and verification, the dual anti-motion plates which are the perforated-impermeable-plate combination attached to the fore-end and back-end of the VLFS, are designed for more wave energy dissipation and added damping. Considering variation of the water depths in offshore, discussion on the effectiveness of these anti-motion devices at different water depths is highlighted.     

摩托车出口全纸质包装的设计

摩托车的包装已不局限于木箱、纸箱、铁包装、胶合板箱、密度板箱、蜂窝板箱和全纸质包装等包装材料,其中蜂窝板箱和纸箱是全球包装的发展趋势,由于该材料能回收再利用,符合环保要求,出口不受任何条件限制,因此得到了广泛地推广和使用。     

性能卓越的铜石墨受电弓滑板

通过分析受电弓滑板的工况条件和为满足工况条件受电弓滑板应具备的性能,突出了铜石墨受电弓滑板的性能优势。综述了铜石墨滑板性能的研究现状,包括滑板的导电性能、摩擦磨损性能和冲击韧性的研究。讨论了铜石墨复合材料滑板的发展动向。