奥丁越野车制动系统故障案例分析

针对奥丁越野车制动系统故障问题,从基本原理和结构入手,分析各个环节对车辆制动效果的影响,提高广大维修人员对制动系统的认识。     

浅议JS6126型超级电容城市客车

介绍了JS6126型超级电容城市客车的结构、工作原理及特点,阐述了整车配置及整车电控系统结构。     

汽车钣金件镀锌板应用研究

在整车开发中,车身防锈对于整车品质和市场定位起着决定性的作用。通过对前期开发车型易锈蚀部位调查,需对车门、地板、机盖及加油口等各个组成部分进行防锈控制。文章主要针对汽车钣金件镀锌板应用进行阐述,分别从镀锌板的分类及应用、优缺点及选择确定原则3方面深入研究,并对车身易锈蚀部位进行系统分析和控制,延长钣金件使用寿命,提高整车品质。     

探地雷达的简述及在各领域中的应用

探地雷达作为一种新型的无损检测技术,具有快速、连续检测、无破坏性等优点,广泛应用于工程地质勘查、公路工程质量检测、灾害地质调查、考古调查、资源勘探等领域。简述探地雷达的发展、工作的基本原理、雷达天线的类型及适用范围,阐述其应用领域,并以某隧道检测为例,说明探地雷达定性检测的直观性和便捷性。同时,总结探地雷达在应用中存在的问题。     

某出口右盘轻型载货汽车空调系统项目开发总结

空调系统是目前江铃轻型载货汽车的标准配置,随着江铃汽车出口的增加,为满足相关国家多为右置转向盘的要求,企业开发右盘车的原动力也在增加。本文从开发一款右盘轻型载货汽车项目(N698项目,以下简称N698)出发,较全面地介绍了空调系统开发背景、开发原理、开发目标;较系统地阐述了整个空调系统的开发内容和布置形式,并对空调系统的开发进行了详细总结。     

点火线圈分配式电控点火系工作原理及故障诊断

介绍宝来轿车一个故障案例,阐述点火线圈分配式电控点火系的工作原理及故障诊断方法。     

浅析东风雪铁龙C5轿车轮胎气压不足监测系统

主要论述东风雪铁龙C5轿车轮胎气压不足监测系统的基本结构及运行原理。     

面向现代造船条件的船体类模块分段定义

为了使造船企业走出靠简单扩大再生产提高生产效率的误区,提出船体类模块分段的概念,以模块制造理论为基础,以模块化制造思想为指导,在不改变现有非标准船舶的船体结构和非标准生产能力配置的前提下,对船体分段进行几何结构和制造工艺等方面的相似性分析,确定船体类模块分段标准。     

Simplified buckling-and-contact-based expansion method for assessment of crashworthiness of double-hulled ship structure

Ship-to-ship collision events can have severe consequences such as loss of life and environmental degradation. For this reason, modern ship designs are required to incorporate a double-hulled structure to prevent inner-hull damage from such events. Using the experimental or numerical method to analyze the crashworthiness of double-hulled ship structures entails much effort, for which reason neither method is easy to adopt at the early design stage. In this paper, an existing simplified method called Ito's method is improved by a new buckling-and-contact-based expansion method. This method can be applied to double-hulled-structure or outer-hull-local-rupture failure mode. The perpendicular bow-to-side collision scenario is assumed for a conservative estimation of damage to a double-hulled structure. The method was verified in the present study by numerical ship collision simulations of several cases. The results for the buckling-and-contact-based expansion method and numerical simulation were similar for a blunt shape of striking body but different for a sharp shape.     

Theoretical and numerical analysis of bending behavior of unbonded flexible risers

This paper presents theoretical and numerical study on bending properties of unbonded flexible risers. To capture nonlinearities in layer's sliding, the stress component due to slip-stick behavior is considered and energy conservation principle considering sliding-caused heat consumption is employed in the analytical model. Besides, a finite element model estimating mechanics of unbonded flexible risers' bending is proposed. In the finite element model, couplings between bending moment–curvature and axial stress as well as contact interaction among layers and tendons have been considered. The theoretical and numerical results were validated against the corresponding experimental data in literature and mutually compared in analyzing nonlinear bending behavior of flexible risers. Moreover, the impacts of axisymmetric loads on riser's bending behavior have been further investigated.